Re: Homemade 100W resistor?
- From: Roy L. Fuchs <roylfuchs@xxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 21 Mar 2006 04:15:59 GMT
On Tue, 21 Mar 2006 08:29:07 +1030, Claus Jensen
<clausjensen@xxxxxxxxxxx> Gave us:
Large wattage resistors are quite expensive and I am always needing
different values in the 1-20 ohm range.
Can anyone tell me the best way to make a 100W resistor out of found
or inexpensive materials as in homemade construction? Something with a
sliding tap to adjust resistance would be handy.
100W would be ideal, but if that is not practical I could accept a
smaller rating and run them in parallel.
Thank you for any advice on this topic.
Your best bet is to visit a military surplus electronics store, OR
try a search on E-Bay for "power resistors". I saw several hundred
hits.
Then, you can string together an array of smaller values, and use
taps to attach and set up nearly any value you want to use. Once your
circuit has been characterized, and you know the value you need for
your design, you can refer back to ebay for a match or pair (or the
like) that will get you the desired target value and wattage. Remember
to use a power level resistor that is at least 1.5 times the actual
wattage you really wish to use it for if you want any longevity and
value stability at all.
.
- References:
- Homemade 100W resistor?
- From: Claus Jensen
- Homemade 100W resistor?
- Prev by Date: Re: Strain Gauges - Signal Conditioning with programmable gain
- Next by Date: Re: Homemade 100W resistor?
- Previous by thread: Re: Homemade 100W resistor?
- Next by thread: Re: Homemade 100W resistor?
- Index(es):
Relevant Pages
|
