I am currently designing a zero crossing detector using an 4N25 optocoupler. I have a series resistor which is valued at 33Kilo Ohms 5watts, in series with it is a 1N4007 diode, which normally have a greater breakdown voltage than that of the light emitting diode inside of the 4N25. It works fine.
The problem is that the resistor that Im using gets too hot. Could anyone give me an advice on how I could dissipate this heat on the resistor.
Thanks in advance!!!
The problem is that the resistor that Im using gets too hot. Could anyone give me an advice on how I could dissipate this heat on the resistor.
Thanks in advance!!!