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Old 29th May 2020, 9:23 am   #12
eddie_ce
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Join Date: Aug 2010
Location: nr. Hannover, Germany
Posts: 372
Default Re: Problems with MiniMod

Just to bring you all up to date.

I have received a new batch of LM386 with the suffix N from a different supplier. I replaced the LM386L with these new IC's and what should I say, everything is working as it should with no 330R resistor in series with the supply. Incidentally, the resistor was also required when powering the MiniMod from a PP3.

So either the LM386L came from a dodgy batch or the LM386L has different characteristics to the LM386N. Although I am led to believe that the only difference is that the LM386L is RoHS conform. Maybe somebody could put me right on this.
I hope this information might be of use to someone building the MinMod, which I must say is a great design and thanks go to its designer.

All I have to do now is sort out the modulation hum.
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