7/22/2019 Mch pht xung Vung

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Mch pht xung Vung, Since, tam gic s dng XR2206 (1Hz - 2MHz)

Postbiendt | Mch ng dng Mch dao ng |Nhn xt(0) | c(3776)My pht xung hay c gi my pht chc nng dng pht nhng tn hiu xung chunnh Since, Vung, Tam gic, rng caCc xung c iu chnh bi bin , tn s,

tr. T tn hiu xung chun ny ta c th dng kim tra, phn tch cc mch in, thitb oy l mt mch s dng IC XR2206 tch hp to xung vung, Since, tam gic. C iuchnh, iu bin c bin v tn s ca xung u ra chun vi chnh xc cao. Mchgiao tip vi linh kin bn ngoi kh d dng v n gin.

P1 - 100K PotentiometerP2 - 50K PotentiometerP3 - 100K PotentiometerC1 - 100uF Audio CapacitorC7 - 10uF Audio CapacitorC2 - 100nF CapacitorC5 - 100nFC6 - 1nF CapacitorC4 - 150pF CapacitorC3 - 100uF Audio CapacitorR1 = 6.8k

R2 = 1KR3 = 1K

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7/22/2019 Mch pht xung Vung

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R4 = 6.8KR5 = 6.8K

Gii tn s c th c iu chnh bi 4 gii : 1) 1Hz-100Hz, (2) 100Hz-20KHz, (3)20KHz-1MHz, (4) 150KHz-2MHz. Tn s u ra c iu chnh bi P1, P2. Mch s dngXR2206 c th kt ni n b m 60Mhz cho hin tha th tn s u ra trn LCD.

Bin ca tn hiu u ra c iu chnh bi P1Gii tn s u ra c gt bi : SW1Chn tn hiu u ra c gt bi : SW2S3 dng chuyn i gia xung Since v Tam gicSine Wave:

Bin : 0 - 3V at 9V DC input mo : Less than 1% (at 1kHz) phng : +0.05dB 1Hz - 100kHz

Square Wave:Bin : 8V (Khng ti ) at 9V DC input

Thi gian sn ln: Less than 50ns (at 1kHz)Thi gian sn xung : Less than 30ns (at 1kHz)S i xng : Less than 5% (at 1kHz)

Tam gic Wave:Bin : 0 - 3V at 9V DC input tuyn tnh : Less than 1% (up to 100kHz)

Thng s k thut :in p cung cp : 9-18V DC InputDng sng : Square, Sine & TriangleTr khng : 600 + 10%Tn s : 1Hz - 2MHz vi 4 gii