In the figure we have a power supply for tubes, found in a Radio Electronics from 1949.
I found this circuit in an English magazine from July 1982. The circuit is still viable because all...
August 2017 - Mouser Electronics is in stock with the PGA460 and PGA460 Q1 ultrasonic processors...
We found this circuit in a Philips documentation from 1965. The circuit uses a common LDR sensor...