This circuit for controlling high power in the AC network was found in a Motorola documentation from 1968. SCRs can be modern equivalents according to the load power.
The operational amplifier used in this project no longer exists, but the circuit can be adapted to...
With S1 closed, when dark, the triac will supply the load with the power set in R4. The LDR is...
Toshiba LDO Regulators Toshiba has a wide variety of low voltage drop (LDO) linear regulators...