Low Voltage Control (CB21155E) This low voltage power control was found in a Popular Electronics from the 90's. The MOSFET can be almost any type depending on the load current. It must have a heat sink. a hre

Third Brake Light (CB4783E)
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
Vox (CB22073E)
This sonic switch, sound relay or simply vox uses a medium impedance speaker as a microphone. The...
Differential voltage reference (CB8677E)
Using neon lamps, this circuit from a 1969 publication provides 17 V of maximum voltage or else...

Low Voltage Control (﻿CB21155E) This low voltage power control was found in a Popular Electronics from the 90's. The MOSFET can be almost any type depending on the load current. It must have a heat sink. a hre