Posted by Tnuctipun [ 204.183.92.95 ] on January 25, 2005 at 14:29:33:

In Reply to: Voltage? posted by colinhester on January 25, 2005 at 12:15:09:

Hey-Hey!!!,
Since this resistor is across the entire B+, it should be able to stand worst-case. Say 500V will be plenty.

As to power, V-squared over R will give you power. Using 200V for the V-term will give you a value to double. We don't want the thing getting too hot. 200 squared is ~40k so about a watt is reasonable estimaate of actual heat. A 5W ought to be easy enough to source.
regards,
Douglas Piccard

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