This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit limits the current to 50 mA when the battery is fully charged.
This is a basic astable circuit using the 555 IC and driving two LEDs. The phase on a rate giving...
This circuit triggers a relay when it gets dark, thus enabling the lighting of fluorescent lamps, which...
When the illumination decreases, this multivibrator starts up, causing the lamp to blink at a...