Hi,
We are using a power transistor to generate heat to a small chamber, see attached. It works well but I was wondering : With 24v input and with a 12v on the emitter (we have a 6.8R 50W resistor), what is the wattage through the transistor? Is it :
I=12/6.8= 1.76A, so power= (24 (collector) - 12 (emitter)) * 1.76 = 21W ?
And if we reduce the voltage on the collector to 18v the wattage would be 10.56W? Is this correct?
unfortunately we cant place the resistor onto the small chamber, as the design for a transistor was made prior to looking at the job, which is a pitty as heats up a lot..
Thanks
Scott