Composed of DAC-80-CCD-V automatic reversible controlled power supply circuit diagram

Published:2011/4/1 2:57:00 Author:Rebekka | Keyword: Power Supply, Automatically Reversible | From:SeekIC

It is convenient to use digital switch to control it when the output voltage converses frequently. The circuit is shown as diagram. It is automatic reversible control power supply that needs 3 three bits reversible counter CD40192. Because D／A converter by three bits BCD input DAC-80-CCD-V. Counter CD40192 needs a inverter followed because DAD-80-CCD-V inputs by BCD complement. By LED screen it need the content of counter corresponds with the output voltage. Reversible switch S1～S3 need 2 switches to adjust direction that off the middle. Step time judges by the cycle of reversible clock and to choose proper time constant. Reset switch S4 zeros output voltage and cleared by the start. You can use D／A converter that BCD code is 16 when you need high resolution. Such as DAC169-16D can get 1mv resolution.



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