This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
In the 110 V network, capacitors of 200 V or more and in the 220 V network, capacitors of 400 V or...
This amplifier with an OTA has a gain of 40 dB. The power supply must be symmetrical. Found in...
Found in a 1967 American publication, this circuit with feedback for two transistors has a gain of...