We found this antenna amplifier or Booster circuit in an Electronics Now from the 90s. The circuit can be implemented with equivalent transistors like the BF494.
Based on the Linear Technology LTC2054, this -48 V circuit was found in a 2005 manual. The circuit is...
A very interesting integrated circuit for step-down converter designs (voltage reducers) with an...
The circuit shown in the figure suppresses arcs in contacts when inductive loads are switched. The SCR can...