Hi
I'm almost too embarrassed to post this problem here as this LM388 chip has 10 pages devoted to it in this forum, but I couldn't find anything on sensitivity problems.
I built this circuit using a 16V 7A transformer with a 3 300uF smoothing cap. The LM388 has a heatsink and a mica washer with paste on both sides of the washer.
My problem is that the pot to vary the output voltage is too sensitive and I would like to reduce this sensitivity.
I have detailed the issue on the attachment, with some questions at the end.
Thank you
Max
I'm almost too embarrassed to post this problem here as this LM388 chip has 10 pages devoted to it in this forum, but I couldn't find anything on sensitivity problems.
I built this circuit using a 16V 7A transformer with a 3 300uF smoothing cap. The LM388 has a heatsink and a mica washer with paste on both sides of the washer.
My problem is that the pot to vary the output voltage is too sensitive and I would like to reduce this sensitivity.
I have detailed the issue on the attachment, with some questions at the end.
Thank you
Max
Attachments
-
213.1 KB Views: 60