Up to 1 Hour timer (CB21424E)

This circuit was found in a 1960s General Electric unijunction transistor manual. The circuit can use any unijunction and the SCR is load sensitive.

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Lights On Reminder (CB12637E)
This circuit activates the horn if the door is opened with the headlights on. The circuit is for...
High Side Transimpedance Amplifier (CB5228E)
This circuit for Laser Diode power was found in a 2005 Linear Technology manual. In the diagram...
Grounding Test (CB13252E)
This circuit tests whether electronics are properly protected with internal grounding. If the...