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 circuit was found in a 1994 publication. It draws 1 of 41 LEDs when we press and then release...
This traditional version of timer was found in an old English publication. The relay must be of a...
We found this configuration in a 1972 RCA linear integrated circuits manual. The transistor admits...