: Usually 6.3V AC or DC to heat the cathode so it can emit electrons.
: The tube itself, which includes the heater, cathode, control grid (G1) for brightness, and focusing anodes. 2. Power Supply Schematic Details Crt Clock Schematic
: Often around -300V relative to the cathode, used for "blanking" (turning the beam off) so it doesn't leave a trace when moving between numbers. 3. Signal Generation & Deflection : Usually 6
11 Oct 2025 — yeah I think we're think we're down some voltage there or something pretty blurry definitely better so we'll stick with this. too. YouTube·CREEKVIEW ACRES which includes the heater
Build a Vector Graphics Display Clock with a Cathode-Ray Tube