This circuit was found in a 90’s 303 Circuits. The components are from the period and the heating system depends on the resistive element.
This commercial medium and short-wave radio was manufactured in Japan in the 60s. The circuit has...
In the figure we have the way to use the LM3914 as a scale of bar LEDs or moving point. The...
Alternating taps on the pressure switch or sensor, cause the output to alternate the high and low...