This 2002 circuit makes it possible to leave the soldering iron with two temperatures. Normal, for work and semi-heated on standby with less energy consumption.
July 2017 - Microchip's new MCP9V91 operational amplifiers with input offset and low drift voltage...
With this circuit, found in an English publication in 1983, it is possible to control an...
The bipolar transistors may be BD136 and BD136 and FET of any type for 1 A current at least. The...