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Old 8th Mar 2019, 9:45 pm   #6
Miguel Lopez
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Join Date: Dec 2011
Location: Mayabeque, Cuba
Posts: 617
Default Re: Building a little practical audio amplifier for experimentation

Quote:
Originally Posted by Silicon
it may be a good idea to add a 600V series capacitor to the input.
Be sure I will

Quote:
Originally Posted by Silicon
What is the function of R11?
I remember that I asked the same question when I first tried to build this amplifier. I think it was Paul Sherwin who answered me on that ocassion.

It's to provide a positive voltage reference to the heaters, which otherwise would be "floating".
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