On Mon, 17 Feb 1997 15:43:07 -0500 (EST), Bob Patten
<n4bp@shadow.net> wrote:
>On Mon, 17 Feb 1997, Marty Watt wrote:
>
>> I found two each 50 Ohm and 100 Ohm 10W power resistors at Radio
>> Shack. One measured 48.9 on the DMM. The 100 Ohms I put in
>> parallel to get 50 Ohms, measured at 49.0 Ohms.
>>
>> How much difference is 1 Ohm going to make as to SWR? I looked in
>none...
>But first, check to see if they're wire wound or carbon. If they're wire
>wound (likely), they're useless!
First, thanks to all who responded. Most seem to think these are
wirewound, and useless. They are cement power resistors (that was
the only label on the package), and I assume they are wirewound.
Many thanks to OH2ZAZ Arjen who did in fact tell me that 1 ohm
wouldn't make any practical difference in SWR (which is what I
suspected, but wasn't sure) if the resistor is the proper type.
Dan, N7VE, remarked that the power would be the sum of the power
ratings individually (in parallel). I would assume that series
resistance power ratings would be that of the lowest resistor in the
series?
72 es 73 de
Marty, KM7W (x-KN4BH)
____________________________________________________________________
Jackson, Tennessee e-mail: mdwatt@usit.net
http://www.public.usit.net/mdwatt
"The Curmudgeon's Corner"
ARRL VE - QRP ARCI #7514 - QRP-L #953 - AK/QRP #098 - Grid Sq EM55oq
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[
QRP-L Archive |
]
[
1993 |
1994 |
1995 |
1996 |
1997 |
1998 |
1999 |
2000
]