This flasher for incandescent lamps was found in Radio Electronics magazine from July 1968. The frequency and duration of the pulses are adjusted in R1 and R3 depending also on C1.
This humidity sensor indicates the different levels of conduction of the sensors through an LED...
This circuit was obtained from an Electronic Design from 1964. The components used are from the...
This two-transistor amplifier was obtained from a 1977 Radio Handbook. The configuration is valid...