This circuit, bridge type, was found in American documentation from the 60's. The transistor is germanium of the time.
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...