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Hi
Just ordering 402 Ohm Resistors to replace VR2 in the new Placid 2.1
Can anyone confirm if .25w are ok, or do they need to be bigger?
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How to figure this out...
V=IR so I=V/R (current = voltage/resistance)
P=VI (power = voltage * current)
Replacing, we get P = V^2/R.
Measure the voltage across the trimmer. For this example, we'll say it's V volts.
Resistance is futile (oops), I mean 402-ohms.
So, Power = (V^2/402) watts.
You will then want to add a little fluff factor so the resistor is not running at it's rated Max, so double it and you will be happy.
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I haven't even built it yet and i am not even installing the trimmer…
so can you just tell me what the voltage is across it in a standard setup with the legato? is 0.25w enough for that?
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Rank: Administration
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Yes, .25W is enough.
No, I cannot tell you the voltage, as it varies with the resistor value.
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