15-02-2014, 10:09 AM
Jeffrey points out:
Just to clarify things for anyone contemplating this approach - a perfectly acceptable one, IMHO - a resistor of 9.6W can physically be made up from more than one resistor, in a series chain. In the case of Jeffrey's example, you could use two 6W 120R in series to give you a measure of reserve capability and it might well be easier to source such sizes than a single large wattage resistor.
Tony
(14-02-2014, 05:54 PM)ppppenguin Wrote: If the heater chain is 112V and the current is 200mA this will be 240R and will dissipate 9.6W.
Just to clarify things for anyone contemplating this approach - a perfectly acceptable one, IMHO - a resistor of 9.6W can physically be made up from more than one resistor, in a series chain. In the case of Jeffrey's example, you could use two 6W 120R in series to give you a measure of reserve capability and it might well be easier to source such sizes than a single large wattage resistor.
Tony
