What is the purpose of R2? I don't quite understand what you are trying to do. Are you trying to measure the current in the heater? Or, are you trying to switch it on/off?
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Re: Led limiting resistor
What is the purpose of R2? I don't quite understand what you are trying to do. Are you trying to measure the current in the heater? Or, are you trying to switch it on/off?
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