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<div class="moz-cite-prefix">Hi<br>
<br>
Am 23.02.23 um 20:32 schrieb A.M. Barrio via Synth-diy:<br>
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<blockquote type="cite"
cite="mid:CABLLCokb1d4uh5BhpV6MTaYSwm1r_ZYFGys5p9YsOr0C6WAgSg@mail.gmail.com">And
finally, removed the LEDs from the LFO. This is what did it, it is
finally working as intended, no wiggling on the VCO output nor LFO
remnants on the rails. I will look into high efficiency leds,
driving them through current sources and ways to stabilise the
amount of current they draw.</blockquote>
The problem is, that there is current draw switched on and off,
which puts a sudden load on the supply. The trick is to keep the
current constant, but redirect it over a transistor (excerpt from
one of my schematics):<br>
<br>
<img src="cid:part1.60Yj6Sx8.0ixZ3e7c@mnet-online.de" alt=""
width="143" height="236"><br>
<br>
The R19 should be fed by your U1C pin 8. If you have only 12V as
supply, you should use a 3k3 or 4k7 resistor for R24.<br>
<br>
Florian <br>
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