? any .asc that has such a setup -- a link to
decoding ...
Figure 1. Pulse-frequency modulation (PFM) control circuit.
??? this also sets a startup overshoot to LED-s string - does not it
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... i was just thinking about opamp being fed from "different power source" ??
how to set up your op amp supply in conjuction with the Led-s supply .. the grounds and loops ... so you can do anything precise
without going too deep to signal processing
simplified answer as "never confronted the issues with" - - will do fine