LM3914 with expanded scale (CB24652E)

This LED bar graph circuit was found in the October 1980 issue of Radio Electronics magazine. The circuit shows how to change the LED drive values.

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Crystal controlled oscillator (CB9655E)
This 5.1 MHz oscillator was found in a 1980s American documentation. The used operational...
NOR Gate Using NAND (CB199E)
A NOR gate can be improvised using one NAND gate of a 4011 as shown here. The diodes are...
Pulsating Buzzer (CB24716E)
Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay...