This interesting circuit in which the LED display is circular imitating a common clock appeared in the Radio Electronics magazine of May 1977. The power supply is included.
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...
This Dimmer circuit for incandescent lamps was found in an English documentation. The input...
With this circuit we can use a high impedance source to excite a low impedance output. The input is...