Lie Detector (T1534E)

This circuit was found in a Popular Electronics from December 1956. Power is provided by batteries.

12 V x 1 A Power Supply (CB24821E)
This is one of the many versions we have of a 12 V power supply with the 7812. We found it in the...
600 W SCR Half Wave Control (CB15404E)
This circuit is from a thyristor manual from On Semiconductor. It makes use of a PUT and a SCR...
MCP9V91 Operational Amplifier
July 2017 - Microchip's new MCP9V91 operational amplifiers with input offset and low drift voltage...