This automatic switch for multiple loads was shown in the May 1983 issue of Radio Electronics magazine. The circuit is designed to switch multiple electronic devices at the same time.
The 4511 is a 7-segment latch driver providing up to 25 mA in each output. The typical application using the...
This circuit is from the 1983 Intersil manual. The display is a 4.5-digit LCD, and the power...
Found in a Popular Electronics from the 90s, this circuit can act as a transmitter for an audio...