Ac voltage regulator

[bandersen]

The heater is 0.55 volts at 0.06A or 60mA. That is 0.03 watts.

You would need a 100 ohm resistor in series with the CRT filament to run it from a 6.3 VAC transformer. The resistor would put out 1/3 watt. Nothing should be getting warm at all.

Did you put a resistor in parallel with the filament instead of in series?

[timmy]

Originally Posted by bandersen

The heater is 0.55 volts at 0.06A or 60mA. That is 0.03 watts.

You would need a 100 ohm resistor in series with the CRT filament to run it from a 6.3 VAC transformer. The resistor would put out 1/3 watt. Nothing should be getting warm at all.

Did you put a resistor in parallel with the filament instead of in series?

A 100 ohm resistor would bring the voltage down to around .55v the wattage sounds good. Would that be a carbon or power resistor? The full voltage passes freely I have to be able to measure the voltage befor putting the heater on it otherwise it will burn the filament out instantly. I did put a resistor in parallel was the only way to get the correct voltage nothing in series would work.