[sdiy] Datasheet Toshiba TA7505M / modern replacement

[Florian Anwander]

Hello


Am 04.01.25 um 19:34 schrieb Oren Leavitt via Synth-diy:
>  I wonder if that buffer op amp is seeing a capacitive load and is 
> oscillating at high freq? Try a 100 ohm resistor between it and the 
> VCO1. If that cures the issue, place the 100 ohm R "in-loop" with the 
> buffer - there are example of this for capacitive decoupling in most 
> op amp datasheets.
I did not check the line with an scope, but a 100 ohm resistor helped. 
Thank you.



Am 04.01.25 um 18:23 schrieb René Schmitz:
> This opamp is likely similar to a 324 / 358 or 741. Sometimes a high 
> impedance causes problems. Maybe the 072 is too modern. 🙂
> Also try an LM358. 
I will try LM358 too. I had to make an order at tme.eu anyway...


Thanks to everybody!

Florian
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