Question
Regarding shunt resistor value in STPM10 mettering device.
Hello. I try tu adjust the value of shunt resistor in STPM10 electronic circuit.
First I placed one 0.5mOhm resistor value, and I watched that 40W lamps meassurement is not very exact. Maybe I should to increase this value. But I have read that maximum value in channel current. (35mV or 150mV)
What should be recommended value for this shunt resistor if I want to meassure wattage from 0W to 500W?
Best regards.
Francisco Jiménez.
