B21126E)
This circuit was taken from an old Popular Electronics. The circuit can have its frequency changed from an external signal. The center frequency is given by C1.
This circuit couples 600-ohm signals to a line of the same impedance consisting of an amplifier stage....
This circuit is suggested by RCA and is based on a dedicated integrated circuit that is the...
The power supply shown has protection against short circuits and can eventually be mounted with...