This circuit for old flashes with xenon lamps was found in a Radio Electronics magazine from June 1966. The sensor is a photoelectric cell from the time. Power is supplied by a 9 V battery.
This micro AM radio will tune strong stations in the frequency range between 530 and 1,600 kHz....
This unijunction buzzer configuration appears in this section from many publications and sources. The...
This counterphase output step was obtained in a Japanese magazine of 1957, a time when the...