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

Common Source HFET Amplifier (CB25569E)
This circuit, which combines a bipolar with any JFET, was found in the April 1993 issue of...
Metal locator (CB7506E)
This simple metal detector was found in a 1960 Sylvania transistor manual. The phone must be high...
45 MHz FI amplifier (CB8414E)
Found in documentation from the 90s, this circuit was used in communications receivers of the...

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