• on Audio/Video/Photography
  • Published in issue 7/2010 on page 85
About the article

Mini Sixties Plus

(Summer Circuits 2010 article)

This circuit is inspired by an amplifier published in the ’60s that produced 8 watts a channel into 8 Ohm and was based on AD161 and AD162 germanium (not ‘geranium’) power transistors. These at last made it possible to build complementary-symmetry power stages with performance similar to that obtained with the standard at the time: a class AB ‘push-pull’ using with two EL84 pentodes.

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Extra info, Update

Correction

August 24th, 2010

In the circuit diagram, the negative terminal of bridge rectifier B1 should be connected to ground.

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