Author Topic: "Little Angel" - Super Simple PT2399 Mini Chorus  (Read 495804 times)

anotherjim

Re: "Little Angel" - Super Simple PT2399 Mini Chorus
« Reply #1260 on: October 05, 2019, 11:33:32 AM »
I wonder if your meter doesn't have a fault and is leaking voltage out. Placing a voltage higher than the chip supply on a pin will cause some chips to latch-up.
If you have any small signal diodes to hand like 1N4148, temporarily solder one between pin 1 and 2 with the cathode at pin 1 and that will prevent pin2 getting a higher voltage - but I have wondered if feeding something into pin 2 via a series capacitor (as the one from the LFO does)  cannot under some conditions "pump up" voltage on pin 2 and cause lockup.
"Designing with PLLs in production circuits is reserved to those with the courage of the thoroughly uninformed."
Nuts & Volts
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