This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose transistors. The circuit has no offset. The power supply must be symmetrical.
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...