So i did some testing yesterday and the performance was all good!
60 Watts was no problem with only a gradual rise in temperature over a substantial length of time.
The tests indicate that it could sustain a relatively high dissipation of power, however it takes an equal amount of time to recover from such an application, if not longer!
Dummy load
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Re: Dummy load
I am as stupid as I look!
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Re: Dummy load
sinus trouble wrote: ↑Thu Apr 08, 2021 11:37 pmI do hope that you are referring to Sinusoidal difficulties and have no need to see a doctor!
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Re: RE: Re: Dummy load
I bought 4, they sent 8.alfaeire wrote:250 Watts 100 Ohms
https://a.aliexpress.com/_m05SKkj
OK, bought 4 of these lads.
Now I wait.. And I might sleep.
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Just got them this morning.
Ive a nice large heatsink from an elenos here I can mount them to.
Gunna use a chassis mount ntype because I'll never really be testing anything greater than 5 or 600w.
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Re: RE: Re: Dummy load
I have a question foralfaeire wrote: ↑Wed Apr 28, 2021 10:15 amI bought 4, they sent 8.alfaeire wrote:250 Watts 100 Ohms
https://a.aliexpress.com/_m05SKkj
OK, bought 4 of these lads.
Now I wait.. And I might sleep.
Just got them this morning.
Is the tab totally isolated from the 100 Ohms ?
Or is the tab one connection of the 100 Ohms ?
BTW: have you finished yours, if so have you a pic
Thanks in advance
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Re: Dummy load
https://www.nonstopsystems.com/radio/fr ... _dummy.htm
parallel serial connection of resistors give you 50R
parallel serial connection of resistors give you 50R
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Re: Dummy load
That design is useless if you can't isolate the heatsinkrigmo wrote: ↑Wed Dec 21, 2022 5:01 pm https://www.nonstopsystems.com/radio/fr ... _dummy.htm
parallel serial connection of resistors give you 50R
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Re: Dummy load
BriansBrain wrote: ↑Thu Dec 22, 2022 1:05 pm That design is useless if you can't isolate the heatsink
and let's bet?
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Re: Dummy load
Totally differentrigmo wrote: ↑Fri Dec 23, 2022 7:27 pmand let's bet?BriansBrain wrote: ↑Thu Dec 22, 2022 1:05 pm That design is useless if you can't isolate the heatsink
They are isolated tab two leg Resistors
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Re: Dummy load
Yes Two types of dummy loads... i buy few and combine to reach 50R....BriansBrain wrote: ↑Sat Dec 24, 2022 10:33 am
Totally different
They are isolated tab two leg Resistors