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Registered Member #619
Joined: Sat Mar 31 2007, 05:26AM
Location: San Jose, CA
Posts: 16
I am having a bit of trouble finding information on homemade hv accurate resistors. I need two 1Kohm resistors for a filter for my nst. Can I use a bunch of small 1k resistors in parrellel to up the voltage handling? if so, what would the equation be, just adding the voltage of each resistor?
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
You need to put the resistors in series since the voltage accross each resistor is what counts. If you put them in parallel the voltage accross each resistor will be the same (but not the current).
If you put 10 one hundred Ohm resistors in series you will get 1 kOhm and 10 times the voltage rating (within certain limits).
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Terry Fritz is the guy who designed the Terry Filter in the first place, so I think whatever resistor he recommends will work just fine, wirewound or not.
Registered Member #546
Joined: Fri Feb 23 2007, 11:43PM
Location: Albuquerque, NM
Posts: 239
I have a pair of L100J1K0E Ohmite's as listed above.
You'll be happy with them.
My first version for my terry filter used a 4x5" perf board filled with various 1/2 w resistors and it was flaky as it could get. Deff don't go that route.
-Doug
edit:
Double Take... hey... Terry Fritz is here...cool...mind taking a glance at my filter, tell me if it look right?
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resistors for filter
