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.
We found this timer for times of a few minutes in a 1974 Ferranti transistor manual. The relay is 37...
Author: Newton C. Braga Published:Aug, 2016 Formato:Book and e-Book Pages:...
This circuit was found in a 80s American documentation. The zener diodes determine the points of...