Dummy load

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sinus trouble
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Re: Dummy load

Post by sinus trouble » Fri Apr 09, 2021 1:21 am

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!
I am as stupid as I look! :|

radium98
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Re: Dummy load

Post by radium98 » Sat Apr 10, 2021 5:47 pm

:tup
sinus trouble wrote: Thu Apr 08, 2021 11:37 pm
radium98 wrote: Wed Apr 07, 2021 5:11 pm coolllllllllll sinus , nowadays i have some sinus troubles tooo lol
I do hope that you are referring to Sinusoidal difficulties and have no need to see a doctor! :lol:

:tup :tup :D :lol:

alfaeire
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Re: RE: Re: Dummy load

Post by alfaeire » Wed Apr 28, 2021 10:15 am

alfaeire wrote:250 Watts 100 Ohms
https://a.aliexpress.com/_m05SKkj

OK, bought 4 of these lads.
Now I wait.. And I might sleep.

Sent from my SM-A526B using Tapatalk
I bought 4, they sent 8.
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.



Sent from my ONEPLUS A5010 using Tapatalk


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BriansBrain
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Re: RE: Re: Dummy load

Post by BriansBrain » Wed Dec 21, 2022 2:40 pm

alfaeire wrote: Wed Apr 28, 2021 10:15 am
alfaeire wrote:250 Watts 100 Ohms
https://a.aliexpress.com/_m05SKkj

OK, bought 4 of these lads.
Now I wait.. And I might sleep.
I bought 4, they sent 8.
Just got them this morning.
I have a question for :whistle

Is the tab totally isolated from the 100 Ohms ?
:smoke
Or is the tab one connection of the 100 Ohms ?

BTW: have you finished yours, if so have you a pic :tup

Thanks in advance ;)
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rigmo
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Re: Dummy load

Post by rigmo » 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

Post by BriansBrain » Thu Dec 22, 2022 1:05 pm

rigmo wrote: Wed Dec 21, 2022 5:01 pm https://www.nonstopsystems.com/radio/fr ... _dummy.htm
parallel serial connection of resistors give you 50R
That design is useless if you can't isolate the heatsink :roll:
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rigmo
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Re: Dummy load

Post by rigmo » Fri Dec 23, 2022 7:27 pm

BriansBrain wrote: Thu Dec 22, 2022 1:05 pm That design is useless if you can't isolate the heatsink :roll:



and let's bet?
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Re: Dummy load

Post by BriansBrain » Sat Dec 24, 2022 10:33 am

rigmo wrote: Fri Dec 23, 2022 7:27 pm
BriansBrain wrote: Thu Dec 22, 2022 1:05 pm That design is useless if you can't isolate the heatsink :roll:
and let's bet?
Totally different :whistle

They are isolated tab two leg Resistors :lol:
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Re: Dummy load

Post by rigmo » Mon Dec 26, 2022 2:03 pm

BriansBrain wrote: Sat Dec 24, 2022 10:33 am
Totally different :whistle

They are isolated tab two leg Resistors :lol:
Yes Two types of dummy loads... i buy few and combine to reach 50R....

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