This amplifier with fixed AC bias was found in a 1947 documentation. The circuit uses two transformers in the power supply and two full-wave rectifier tubes.
This sensitive circuit can be designed with FETs such as BF245 and MPF102. The sensor is a silicon...
May 2017 - Mouser Electronics already has Microchip's new MCP14A0451 and MCP14A0452 integrated...
This circuit was found in a 1966 General Electric documentation. The circuit makes use of PUTs...