Hi,
The emitter side of the opto-interrupter is connected to a +15V supply via 820ohm resistor.
To determine the reqd wattage for the resistor, shall I consider only voltage and R value or do I need to consider any other parameter of the opto interrupter.
If I consider only R value and V for calc. wattage, it comes : V^2/R = 0.274
Is this ok..?In that case is it ok if I go for a 0.25 W Resistor or should I choose one with a greater wattage 0.27W?
The emitter side of the opto-interrupter is connected to a +15V supply via 820ohm resistor.
To determine the reqd wattage for the resistor, shall I consider only voltage and R value or do I need to consider any other parameter of the opto interrupter.
If I consider only R value and V for calc. wattage, it comes : V^2/R = 0.274
Is this ok..?In that case is it ok if I go for a 0.25 W Resistor or should I choose one with a greater wattage 0.27W?
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