This circuit was obtained from the February 1992 Radio Electronics magazine. In it, a bar of 4 LEDs flashes continuously at a speed given by C1 and the setting of R3.
This simple two-transistor FM transmitter was found in the November 1991 issue of Radio...
This vibrato circuit was found in Motorola's 1966 documentation. The circuit uses transistors of the...
August 2017 - The new LZ400UB00 ultraviolet LEDs from Engin LEDs with wavelengths of 385 -410 nm...