Quote:
|
Originally Posted by Groth
...
You'll be better off with higher voltage/lower current, less self-heating of the wires, less secondary heat loss through the wires.
|
Excellent point indeed.
The heater cartridge I have, has a resistance somewhere between 10 and 15 Ohms (14 Ohms if I remember correctly), leaving me with a current of ~2.3 amps @ 30 volts, to generate ~70W of power.
You can use an AC cartridge, and just reduce the applied dc voltage. The only trick there is making sure that you don't exceed the curent rating, which you may have to calculate.