Found in a 1967 publication by General Electric, this control is intended for motors up to 2 A according to the SCR used. Higher current equivalent SCRs can be used.
We have in the figure a traditional amplifier configuration with operational amplifier. The source...
This circuit was found in a 1977 Radio Shack documentation. The circuit is TTL, which must be...
This circuit is suitable for modulating small FM transmitters for eavesdropping or espionage. The...