Four-syllable circuit

Published:2011/4/21 22:09:00 Author:Nicole | Keyword: four-syllable | From:SeekIC

With four different groups of 2 switches, this circuit can send out 4 tones, and 4 flashing effects. BG1, BG2 are gap oscillation circuit, W is used to adjust oscillation frequency; BG3, BG4 and Y are audio oscillation circuit, if C changes, the tone can be changed, they are connected by D3. K1-1, K2-1 and K1-2, K2-2 are two switches, when they are 00, 01, 10, 11, the circuit is in four states, and it will produce 4 kinds of tone and flashing effects.



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