Hobbi Elektronika - megtestesules.infomegtestesules.info/hobbielektronika/2014/talk08.pdf · Hobbielektronika csoport 2014/2015 1 Debreceni Megtestesülés Plébánia Bevezetés az

Hobbielektronika csoport 2014/2015 Debreceni Megtestesls Plbnia 1

Bevezets az elektronikba: Az NE555 idzt IC

Hobbi

Elektronika


Felhasznlt irodalom

Nagy Gergely (ELTE): Az 555-s idzt hasznlata

Electronics tutorials: www.electronics-tutorials.ws/waveforms/555_timer.html

F-alpha.net: en.f-alpha.net/electronics/integrated-circuits/timer-555/

Paul Falstad: Elektronikus ramkr szimultor - www.falstad.com/circuit

http://www.eet.bme.hu/~nagyg/elektronika/03_555.pdfhttp://www.eet.bme.hu/~nagyg/elektronika/03_555.pdfhttp://www.eet.bme.hu/~nagyg/elektronika/03_555.pdfhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://www.electronics-tutorials.ws/waveforms/555_timer.htmlhttp://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/http://www.falstad.com/circuit/index.htmlhttp://www.falstad.com/circuit/index.htmlhttp://www.falstad.com/circuit/index.htmlhttp://www.falstad.com/circuit/index.htmlhttp://www.falstad.com/circuit/index.htmlhttp://www.falstad.com/circuit/index.html


Az NE555 idzt

Az 555-s IC-t a Signetics (jelenleg NXP, korbban Philips) fejlesztette ki 1971-ben, Hans Camenzind terve alapjn.

Az eredeti cl egy olyan oszcilltor volt, amire teljesl, hogy:

a frekvencijt kls elemekkel (R, C) lehet belltani,

tpfeszltsg- s hmrskletfggetlen.

Vgl egy ltalnos idzt ramkr kszlt el, ami taln a legnagyobb pldnyszmban eladott IC: 2003 tjn vi 1 millird darabot gyrtottak belle (Fairchild, Maxim, Motorola, ST, TI, NXP).

NE555 paramterek


NE555 kapcsolsi vzlat


(A Philips Semiconductors 1994-es adatlapja szerint)


Az NE555 felptse A funkcionlis felpts s a lbkioszts az albbi brn lthat (a lbkiosztsnl mindig az IC fellnzeti rajzt adjk meg). Az IC elnevezse a 3 db 5 kohmos ellenlls miatt lett 555

Trigger: ha alacsony, 1-be lltja az RS flip-flopot, s a kimenet magas lesz. Reset: ha alacsony, trli az RR flip-flopot, a kimenet alacsony lesz. Mi nem hasznljuk. Control Voltage: A Threshold bemenet billensi szintje ellenrizhet, illetve mdosthat vele. Threshold: Ha szintje magasabb a belltott kszbnl (2/3*VCC, vagy Control) akkor visszabillenti az RS flip-flopot, a kimenet alacsony lesz. Discharge: A kls idzt kondenztor kistsre hasznlhat nyitott kollektoros kimenet. Akkor aktv, ha a kimenet magas.

Ground: A tpegysg kzs pontja (fld). +VCC: Tpfeszltsg (4,5 15 V) Output: kimenet (0-15V / max. 200 mA).


A tpfeszltsg bektse

Link: en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/

A bels osztn az A pont feszltsge VCC*2/3 (esetnkben 6 V) lesz, a B pont feszltsge pedig VCC*1/3 (esetnkben 3 V) lesz. Ezek a kt kompartor Referencia szintjei. Megjegyzsek: Ha a Reset lbat nem hasznljuk, clszer magas

szintre hzni! Ha a CTRL bemenetet nem hasznljuk, egy

kondenztorral kssk fldre (zajszrs).

http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-1-power-supply/


A kimenet bektse

Link: en.f-alpha.net/electronics/integrated-circuits/timer-555/lets-go/experiment-3-out-output/

Az OUT kimenet az NE555 3-as lba. Csak kt llapota van: H, azaz magas szint (VCC, ami esetnkben 9 V) s L, azaz alcsony szint (0 V). Itt most kt LED-et ktnk a kimenetre. Ha a kimenet alacsony, LED1 vilgt. Ha a kimenet magas, akkor pedig L2 vilgt. Alaphelyzetben (bekapcsolskor) a kimenet alacsony (LED1 vilgt)

http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-3-out-output/


A trigger bemenet vezrlse

Link: en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/

A TRIGGER (elst) bemenet egy kompartor negatv bemenetre van ktve. A kompartor msik bemenete az 555 feszltsgoszt VCC*1/3 pontjra csatlakozik.

Ha az S1 nyomgombot megnyomjuk, TRIGGER bemenet feszltsgszintje VCC*1/3-nl alacsonyabb lesz, ekkor az RS flip-flop S (Set) bemenete aktv, az OUT kimenet pedig magas szintre billen, LED2 vilgt. De hogyan billenthetjk vissza a kimenetet?

http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-4-trigger-input/


A threshold bemenet vezrlse

Link: en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/

A THRESHOLD (kszbszint) bemenet egy kompartor pozitv bemenetre van ktve. A kompartor msik bemenete a VCC*2/3 pontra csatlakozik.

Ha az S2 nyomgombot megnyomjuk, THRESHOLD bemenet feszltsgszintje VCC*2/3-nl magasabb lesz, ekkor az RS flip-flop R (Reset) bemenete aktv, az OUT kimenet pedig alacsony szintre billen, LED1 vilgt. Vgeredmnyben lett egy bistabil multivibrtorunk

http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-5-threshold-input/


A reset bemenet vezrlse

Link: en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/

A RESET (trls) bemenet, amely a 4-es lbon vezrelhet, kzvetlenl az RS flip-flop trl bemenethez van ktve. Ha az S3 nyomgombot megnyomjuk, RESET bemenet feszltsgszintje alacsony lesz, ekkor az RS flip-flop alaphelyzetbe kerl, az OUT kimenet pedig alacsony szintre billen, LED1 vilgt.

Vgeredmnyben S2 s S3 egyarnt alaphelyzetbe llt.

http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/


A discharge kimenet

Link: en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/

A DISCHARGE (kists) kimenet, ami az NE555 7-es lba, egy tranzisztor kollektorhoz van ktve (nyitott kollektoros kimenet). A tranzisztor bzisa az RS flip-flop invertlt kimenetre csatlakozik. Amikor az RS flip-flop alaphelyzetbe kerl, a tranzisztor vezet. Ha az RS flip-flop aktv llapotba billen (triggerels utn), akkor pedig a tranzisztor lezr (nem vezet).

Ohmmrvel ellenrizhetjk a vezetst, a 2. bra szerint.

http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/http://en.f-alpha.net/electronics/integrated-circuits/timer/lets-go/experiment-6-reset-input/

Alkalmazsok

Schmitt trigger (hiszterzises kompartor)

Monostabil multivibrtor (idzt) Nem jraindthat (non-retriggerable)

jraindthat (retriggerable)

Astabil multivibrtor (ngyszgjel oszcilltor) Aszimmetrikus jelalak

Szimmetrikus jelalak

PWM (impulzusszlessg modulci)

Egyszer projekttletek Elektronikus metronom

Rendrsgi szirna


Schmitt triggeres inverter


Ha a jel elri a VCC*2/3-at, akkor a kimenet logikai 0-ba kerl, ha pedig VCC/3 al cskken, akkor logikai 1-be.

Link: www.falstad.com/circuit/e-555schmitt.html Az albbi kapcsolsban az NE555 hiszterzises kompartorknt viselkedik, ami zajos digitlis jelek javtsra hasznlhat.

Plda: a Schmitt triggeres bemenet hatsa

Megjegyzs: itt a kimenjel nem invertlt!

http://www.falstad.com/circuit/e-555schmitt.htmlhttp://www.falstad.com/circuit/e-555schmitt.htmlhttp://www.falstad.com/circuit/e-555schmitt.htmlhttp://www.falstad.com/circuit/e-555schmitt.htmlhttp://www.falstad.com/circuit/e-555schmitt.htmlhttp://www.falstad.com/circuit/e-555schmitt.html


Monostabil multivibrtor

Link: en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/

Hasznljuk a DISCHARGE (kists) kimenetet, ami alaphelyzetben kisttt llapotban tartja a C1 kondenztort.

S1 lenyomsra a kimenet magas szintbe billen, s mindaddig ott marad, amg a feltltd kondenztor feszltsge el nem ri a 2/3*VCC visszabillentsi threshold szintet. Ekkor az OUT alacsony szintre ll, a DISCHARGE kimenet lehz (vezet), a C1 kondenztor kisl.

Nem jraindthat vltozat

T = 1.1 R2C1 = 1.1 47 000 0.0001 F = 5.2 sec

http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-12-non-retriggerable-monoflop/


Monostabil multivibrtor

Link: en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/

A D1 didval bvtjk az elz kapcsolst.

S1 lenyomsakor a C1 kondenztor is kisl, ezrt ismtelt triggerelsre az idzts mindig jraindul.

Alkalmazs: mozgsdetektorral vezrelt bejrati vilgts lpcshzi vilgts hinyz impulzus detektls RS-485 half-duplex zemmd automatikus irnyvltsa

jraindthat vltozat (retriggerable)

http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-13-retriggerable-monoflop/


jraindthat monostabil multivibrtor Link: www.falstad.com/circuit/e-555missing.html Megjegyzs: Az elz oldali kapcsolsnl hasznlt dida helyett a gyakorlatban inkbb tranzisztort alkalmazunk (ez kevsb terheli a triggerjel forrst).

A szimulciban nyomon kvethetjk a mkdst: A triggerelst a VAGY ramkr

bemenetnek tbillentsvel tilthatjuk/engedlyezhetjk.

Aktv llapotban (triggerels utn) a kondenztor folyamatosan tltdik.

Ha nem jn jabb indt impulzus, akkor a visszabillensi kszb elrse utn a kimenet alaphelyzetbe ll vissza.

Folyamatos triggerels esetn a tranzisztor kisti a kondenztort, az idzts mindig jraindul.

http://www.falstad.com/circuit/e-555missing.htmlhttp://www.falstad.com/circuit/e-555missing.htmlhttp://www.falstad.com/circuit/e-555missing.htmlhttp://www.falstad.com/circuit/e-555missing.htmlhttp://www.falstad.com/circuit/e-555missing.htmlhttp://www.falstad.com/circuit/e-555missing.html


1. A kondenztor az R1 + R2 ellenllson keresztl tltdik Vcc*2/3-ra, amikor beindul a kists, a kimenet pedig alacsony szintre vlt..

2. A kondenztor kistse az R2 ellenllson keresztl trtnik, amg a feszltsg Vcc/3-ra nem cskken. Ekkor jraindul a tltsi ciklus, a kimenet pedig magas lesz.

1 = 0.693 1 + 2 C 2 = 0.693 2

=1

=

1

1 + 2=

1.44

(1+2 2)

Astabil multivibrtor mkdse


Astabil multivibrtor szimulcija

A kondenztor feszltsge

Kimenenti feszltsg

Az astabil multivibrtor s az NE555 bels mkdse jl megfigyelhet Paul Falstad honlapjn az ramkr szimultor 555 Internals cm mintapldjnl. Amint a kimenjel alakjbl lthat, azonos rtk ellenllsok esetben a kitlts kb. 66 %-os (a kimenet ktszer annyi ideig van magas szinten, mint alacsony szinten).

Link: www.falstad.com/circuit/e-555int.html

http://www.falstad.com/circuit/e-555int.htmlhttp://www.falstad.com/circuit/e-555int.htmlhttp://www.falstad.com/circuit/e-555int.htmlhttp://www.falstad.com/circuit/e-555int.htmlhttp://www.falstad.com/circuit/e-555int.htmlhttp://www.falstad.com/circuit/e-555int.html


Astabil multivibrtor megptse

Link: en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/

Az albbi bra egy lehetsges elrendezst mutat be. C1 helyn prbljunk ki ms kapacitsokat is, pldul 10, illetve 47 F-ot!

t1 = 0.693 (R1 + R2) C1 = 0.693 (47 000 + 47 000 ) 0.0001 F 6.5 sec

t2 = 0.693 R2 C1 = 0.693 47 000 0.0001 F 3.3 sec

T = t1 + t2 = 9.8 sec

f = 1/T 0.1 Hz

http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/http://en.f-alpha.net/electronics/integrated-circuits/timer-555/go-on/experiment-15-astable-multivibrator/


Astabil multivibrtor megptse

Link: megtestesules.info/hobbielektronika/2014/NE555_astable.wmv

Az albbi viden a megptett astabil multivibrtor mkdse lthat, C1 = 10 F s C1 = 47 F kapacitsokkal kiprblva.

http://megtestesules.info/hobbielektronika/2014/NE555_astable.wmvhttp://megtestesules.info/hobbielektronika/2014/NE555_astable.wmvhttp://megtestesules.info/hobbielektronika/2014/NE555_astable.wmv


Szimmetrikus jel astabil multivibrtor megoldsok

Az 50 %-os kitlts (szimmetrikus) jelalak ellltst clz megoldsok lnyege, hogy a C1 kondenztor feltltse s kistse azonos idllandkkal trtnjen. Az els pldban feltltskor az thidal dida miatt R1*C1 dominl, kistskor

pedig R2*C1. A msodik pldban a kists/feltlts R2-n trtnik, a szimmetrikus jelalak

R1 >> R2 esetn teljesl (R1 akr el is hagyhat).


Szimmetrikus jel astabil multivibrtor szimulcija

Az elz oldali kapcsolsokat szimultorban is kiprblhatjuk. Kidolgozott mintaplda nem ll rendelkezsre, a www.falstad.com/circuit/e-555square.html alapkapcsolst mdostanunk kell az albbi brk szerint.

http://www.falstad.com/circuit/e-555square.htmlhttp://www.falstad.com/circuit/e-555square.htmlhttp://www.falstad.com/circuit/e-555square.htmlhttp://www.falstad.com/circuit/e-555square.htmlhttp://www.falstad.com/circuit/e-555square.htmlhttp://www.falstad.com/circuit/e-555square.html


Impulzusszlessg modulci (PWM) Kidolgozott mintaplda nem ll rendelkezsre, a www.falstad.com/circuit/e-555pulsemod.html cmen tallhat kapcsolst mdostanunk kell az albbi bra szerint.

A vezrl bemenetet (CTRL) modull jelbemeneteknt hasznlva, a korbban ismertetett monostabil kapcsolst PWM-knt hasznlhatjuk. A trigger bemenetre lland frekvencij vivt (ngyszgjel) kell ktni.

http://www.falstad.com/circuit/e-555pulsemod.htmlhttp://www.falstad.com/circuit/e-555pulsemod.htmlhttp://www.falstad.com/circuit/e-555pulsemod.htmlhttp://www.falstad.com/circuit/e-555pulsemod.htmlhttp://www.falstad.com/circuit/e-555pulsemod.htmlhttp://www.falstad.com/circuit/e-555pulsemod.html


Elektronikus metronom Link: www.electronics-tutorials.ws/waveforms/555_oscillator.html

A potmter vltoztathat rtk ellenllsknt van bektve, amellyel a kvnt temp bellthat.

Az R1 >> R2 arny biztostja, hogy az itt negatv logikjknt hasznlt kimeneten a jelkitlts kicsi legyen (koppansszer hang).

Hangkeltshez piezo csipogt vagy elektrodinamikus hangszrt hasznlhatunk

http://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.html


Rendrsgi szirna Link: www.electronics-tutorials.ws/waveforms/555_oscillator.html

Kt NE555 IC-t hasznlunk fel. Az els fokozat egy 50 % kitlts, kisfrekvencis ngyszgjel genertor, ami a msodik fokozat (egy hangfrekvencis astabil multivibrtor) visszabillensi szintjt, ezltal a hang frekvencijat vltogatja.
http://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.htmlhttp://www.electronics-tutorials.ws/waveforms/555_oscillator.html

Documents

Hobbi Elektronika - megtestesules.infomegtestesules.info/hobbielektronika/2014/talk08.pdf · Hobbielektronika csoport 2014/2015 1 Debreceni Megtestesülés Plébánia Bevezetés az