This mains-synchronized circuit produces a simple 1 pulse per second. The circuit is from a Radio Electronics magazine from May 1977.
We found this antenna amplifier or Booster circuit in an Electronics Now from the 90s. The circuit...
We found this circuit in the Linear Applications Handbook of the 1994 National Semiconductor. The...
This circuit is from a 1976 Motorola power semiconductor manual. In it we have the optical...