Quasi-digital amplifier circuit diagram

Published:2011/6/27 1:25:00 Author:Rebekka | Keyword: Quasi-digital amplifier | From:SeekIC

Quasi-digital amplifier. Its power amplification process uses digital means (PWM), and the volume control also is digital. The Sl ~ S4 in the CMOS analog switch CD4066 and the composition of binary reversible counter CD40193 form the digital volume control circuit. Press ANl key, 2Hz clock pulse from the NAND gate H3, H4, and the output of NAND gate H2 turn into CD40193 of CL + side and the CD40193 is counted by addition; When you press AN2 key, the clock pulse of the non-2Hz Gate Bl, B2 enters the CL-end CD40193. The CD40193 is counted by subtraction.



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