20 Khz ring counter  

Counter Circuits
Added on
Mar 21, 2013
The shift pulse turns off the conducting scs by reverse biasing the cathode gate. The charge stored on the coupling capacitor then triggers the next stage. An excessively long shift pulse charges up all the capacitors, turning off all stages.
20 Khz ring counter - schematic

Grounding an anode gate will "set" that stage.

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