May is Lyme Disease Awareness Month, focusing on prevention and early detection of the bacterial infection transmitted by ...

The diode bias current is created by a transistor-based peak detector circuit driven off the main audio signal. But don’t just take our word for it, watch the video after the break.

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The circuit acts as a peak detector and the peaks last only about twenty microseconds. The post doesn’t have the schematic for the peak detector but the video, seen below, does. If you want a ...