ADSR/VCA not working [FIXED]

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jonny_w
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ADSR/VCA not working [FIXED]

Post by jonny_w » Thu Mar 24, 2016 6:16 pm

I just finished building up a ADSR/VCA. I'm not getting any output, and U2 is incredibly hot to the touch. All the other IC's are fine - and no magic smoke has been released.

Any suggestions on where to start? U2 calls for a 4052 DP4T analogue switch, and I have a CD74HC4052E chip in there.

UPDATE: Learned there is a difference between CD4052 chips and CD74HC4052 chips, notably the maximum voltage rating. That would explain the heat, and completely fixed the problem.

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