Bipolar transistors are types of general use like BC548, while the power MOSFET can be of any type depending on the current and voltage in the load. The circuit is from old documentation.
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Found in a Popular Electronics from the 90s, this circuit generates signals from 2 Hz to 30 kHz in...
This balance control for the channels of a stereo system was found in a 1969 Mullard...
Pressing S1 stops the circuit. This circuit was found in the October 1992 issue of Radio...