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.
The figure shows how to implement an amplifier with gain 10 using the operational amplifier LM41....
This experimental AM radio circuit was found in a 1979 English magazine. It can be fitted with a...
This circuit shows how it is possible to control 9 loads with only 6 Triacs using the matrix...