What supplies did you try yet Elso for the TDA1543 and which did you like best ?
Most recent non-os TDA1543 I fed with LT1086-ADJ,
with a capacitor bypassed LM329 6.9V reference to ADJ giving about 8.15V output voltage. The reference is fed from output with a LM334 current source set for 1~2 mA.
Set up this way, it isolates ADJ as much as possible from whatever the TDA1543 is throwing back at the psu line.
One of the things I still want to try is just feeding it with a bypassed zener/string of LEDs referenced NPN follower.
But maybe you have tried that already and could share your results ?
Regards,
Most recent non-os TDA1543 I fed with LT1086-ADJ,
with a capacitor bypassed LM329 6.9V reference to ADJ giving about 8.15V output voltage. The reference is fed from output with a LM334 current source set for 1~2 mA.
Set up this way, it isolates ADJ as much as possible from whatever the TDA1543 is throwing back at the psu line.
One of the things I still want to try is just feeding it with a bypassed zener/string of LEDs referenced NPN follower.
But maybe you have tried that already and could share your results ?
Regards,
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