Comment on [deleted]
ChaoticNeutralCzech@feddit.org 1 month agoThe power draw is 4 watts, not much more than a color LCD of this size and brightness, and most of it is the CRT heater. Very little ionizing radiation at 3 kV.
Comment on [deleted]
ChaoticNeutralCzech@feddit.org 1 month agoThe power draw is 4 watts, not much more than a color LCD of this size and brightness, and most of it is the CRT heater. Very little ionizing radiation at 3 kV.
SubArcticTundra@lemmy.ml 1 month ago
4W is impressive given how high voltages are needed for any CRT. I suppose the current must be minuscule to compensate?
ChaoticNeutralCzech@feddit.org 1 month ago
The anode current for such a small screen area is pretty low. The flyback also provides a few hundred V to 1 kV for various grids like focus and brightness of the electron gun. Since they all use voltages adjustable in different ranges, a single series of resistors and potentiometers is employed as an adjustable potential divider, consuming usually less than 1 mA (1 W).