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.
This simple circuit is intended to test integrated circuits 555 and 741 in 8-pin DIL enclosures. In both...
This circuit produces the ticking of a clock on a common piezoelectric transducer. The circuit has an...
This circuit is intended to limit the ringing time of a bell. Even if the button is kept pressed for...