Found in a Maxim publication from the 90s, this circuit generates signals from 10 to 25 kHz with a THD better than -80 dB. The circuit makes use components of the time.
With a mains-rated transformer and 1:1 winding this benchtop circuit was found in the January 1995...
This interesting 80's EDN circuit divides the input pulse frequency by a number given by n...
We find this automatic battery charger in an 80s ON Semiconductor circuit and application manual. Bridge...