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need resistors

bcroft

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Does anyone know where i can find a 3 Ohm or 7 Ohm resistor? if anyone has one or two would you be interested in selling?
 



SargeMX5

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1/2watt is enough, 1 watt and the resistor is bigger. depending on the current, you may be able to get away with 1/4 watt
 

Gazoo

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SargeMX5 said:
1/2watt is enough, 1 watt and the resistor is bigger. depending on the current, you may be able to get away with 1/4 watt

If using a 3 ohm resistor with the LM317, the current going to the diode will be 416ma's. This means you need a .52 watt resistor. Granted you could use a 1/2 watt resistor, but I like to follow ohms law and do what ohms law is telling me to do.

You can get away with a 1/4 watt resistor if you drive the diode with 200ma's or less. The calculations are very simple when working with the 317.
 

bcroft

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cool, ill order that flame proof one you linked gazoo,  I appreciate it everyone, thanks!
 




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