Circuit Diagram

875p computer board circuit diagram 65

Published:2011/10/24 22:22:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 64

Published:2011/10/24 22:22:00 Author:Ecco | Keyword: computer board

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875p computer motherboard circuit diagram 63

Published:2011/10/30 22:17:00 Author:Ecco | Keyword: computer motherboard

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875p computer motherboard circuit diagram 62

Published:2011/10/30 22:25:00 Author:Ecco | Keyword: computer motherboard

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875p computer motherboard circuit diagram 61

Published:2011/10/30 22:24:00 Author:Ecco | Keyword: computer motherboard

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875p computer motherboard circuit diagram 60

Published:2011/10/30 22:24:00 Author:Ecco | Keyword: computer motherboard

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875p computer motherboard circuit diagram 59

Published:2011/10/30 22:23:00 Author:Ecco | Keyword: computer motherboard

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Analog temperature controller circuit

Published:2011/11/1 22:19:00 Author:Ecco | Keyword: Analog temperature controller

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Colpitts oscillator with adjustable frequency

Published:2011/10/24 21:18:00 Author:Ecco | Keyword: Colpitts oscillator , adjustable frequency

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875p computer board circuit diagram 90

Published:2011/10/24 21:30:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 89

Published:2011/10/24 21:29:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 88

Published:2011/10/24 21:29:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 87

Published:2011/10/24 21:28:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 86

Published:2011/10/24 21:27:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 85

Published:2011/10/24 21:26:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 84

Published:2011/10/24 21:23:00 Author:Ecco | Keyword: computer board

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875p computer board circuit diagram 83

Published:2011/10/24 21:22:00 Author:Ecco | Keyword: computer board

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875p computer motherboard circuit diagram 082

Published:2011/10/31 20:56:00 Author:Ecco | Keyword: computer motherboard

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Timing automatic AC shutdown circuit diagram

Published:2011/10/31 2:22:00 Author:May | Keyword: Timing , automatic AC shutdown

Befeore it gets power, the timing clock generator is reset by the capactor of the pin 12 of IC, and the various output stages are in low potential. Because out-port Q14 outputs low level, the triode VT1 closes, the VT2 is breakover, relay J gets the electricity, then the contacts pull in. AC OUT is the AC output socket, which may serve as the head light, miniature ceiling fan and other AC electric appliances without timing device. The CD4060 integrated circuit has the 14-level binary counting/divider with clock pulse oscillator. Adjusting potentiometer RT can change the fixed time, and the timing time is approximately between 20 second ~4.5 hour.   (View)

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Small FM transmitter ( wireless speaker) circuit

Published:2011/10/31 3:02:00 Author:May | Keyword: FM transmitter, wireless speaker

This circuit consists of transistor BFR34A,and the figure(a) shows its mechanical structure, when it worksat operating point, Uce=12V, Ic=17mA, theoutput power is12mW.Figure (b) is thebasic circuit. The collector's pins are grounded for better heatdissipation. The optimal phase condition of feedback between tmitter and collector isadjustedby coaxial wire. Variable output coupling capacitor is composed of the small thin plate with side length in5mm.   (View)

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