This circuit uses components that are still common despite being from 1995 documentation. The circuit can be powered by 6 to 12 V voltages and the speed of the LEDs' sliding effect is set to P1.
Found in Radio Electronics from the 90s, this thermometer uses an integrated circuit that is...
This conventional slow-moving circuit uses incandescent light bulbs, but can be changed to use...
This 100 kHz crystal oscillator was found in American documentation from the 1980s. The JFET can...