In the figure we have a circuit that uses unusual components, being indicated for low frequency applications. The circuit signal is generated by a unijunction transistor that oscillates at 8 kHz.
This is a VU-meter bargraph with up to 7 LEDs according the Power supply voltage. Adjusts are made by...
Found in old English documentation, this circuit simulates a diac and can be used to trigger...
The oscillator shown in the figure generates a rectangular signal with a 50% active cycle (square)...