Designed by Philips in 1968 to control the washer water level this circuit uses components from the era. The circuit actuates the water inlet valve.
This circuit is from an old Popular Electronics. The circuit is based on a 555 and a 5V voltage...
This Japanese commercial radio with 5 transistors is from the 60s and is powered by 6 V. It is a...
Short duration pulses can be obtained with the relaxation oscillator that uses common transistors and is...