We found this active crossover in a Radio Electronics magazine from June 1961. Note the different adjustment ranges. The signal must be applied to the amplifier input.
The circuit we have just described has been mounted in the car of the author of the project for...
This 90's project shows how to use an old cassette recorder to practice telegraphy. In position A of the...
The integrated circuit used in this regulator is not easy to obtain, since the publication is from...