4093 Sine Square Converter (CB26335E)

Found in a Popular Electronics from the 90s, this circuit operates up to about 5 MHz input.

Sewing Machine Control (CB26032E)
This sewing machine motor control was found in the December 1997 Electronics Now magazine. The...
Transistor Driver MC34071 (CB15286E)
Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 d...
Rumble Filter (CB944E)
Rumble is a low frequency rumble that occurs with turntables. If the reader recovers recordings on...