We found this circuit in documentation from the 90s. The circuit uses components that are still common today, turning off a load after the programmed time. The time is given by the capacitor.
The purpose of this circuit found in a 1967 GE SCR manual is to control a heating element. The SCR...
We found this circuit in an old documentation. The operational amplifier of the time can be...
This power control from a 1968 Motorola manual shows how to use a contemporary diac as a...