This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
We found this circuit that protects speakers against current surges that occur when the amplifier is...
Found in a 70’s documentation, this circuit can operate with signals up to 10 MHz. The operational...
This circuit consists of a voltage regulator for 6 V batteries with a very low voltage drop. The...