This circuit was found in the February 1999 issue of Electronics Now magazine. The circuit consists of a timer that triggers a visual and audible starting device.
This circuit was found in a documentation for radio amateurs from 1978. The resonant circuit...
This circuit uses only transistors and was found in a 2003 documentation. Transistor 2N3055 must...
This circuit allows control of loads of up to 1 A with voltages from 3 to 15 V. The transistor must be...