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.
This configuration of the year 2000 was used in several projects of this site and even in circuits...
This circuit is for collectors. It is the circuit of one of the most popular transistor radios of the...
This circuit is from a 1977 Radio Shack documentation. In it we have the activation of an LED for...