This circuit generates signals for adjustments in FIs of 10.7 MHz. The transistors can be BC548 or equivalent. We found this configuration in a documentation from the 70s.
Found in 1967 General Electric documentation, this circuit is intended for the control of...
We found this amplifier in a publication of 1990, but it can be mounted today with some exchanged...
This circuit has an oscillator triggered when the microphone picks up sounds, noises or even...