It is currently Fri Jun 21, 2024 5:41 am




Post new topic Reply to topic  [ 9 posts ] 
 Dummy load 
Contributor 2023
User avatar

Joined: Wed Jul 16, 2008 8:04 pm
Posts: 321
Location: Liverpool. Laaaaa!!
Feedback: 46 (100%)
Reply with quote
Post Dummy load
Mornin guys n Gals.

I am going to build a dummy load for aprox 150w. Where is the best place for resistors. Without a bleeding 4.50 surcharge .

Advice on the best ones to get

Taa
Paul

_________________
Paul G1LOV Liverpool laaaa

Any and All PM's will be replied to..
Not like some on here !!!!


Sat Aug 30, 2014 9:21 am
Profile Send private message

 Dummy load 
Advanced Member
User avatar

Joined: Tue Oct 09, 2012 1:09 pm
Posts: 15912
Location: West Midlands
Feedback: 130 (100%)
Reply with quote
Post Re: Dummy load
Often on ebay you see them either 150W or 250W, they need a heat sink, but do work well

_________________
Gee Three Eee Jay Ess - SARL, EPC


Sat Aug 30, 2014 9:26 am
Profile Send private message

 Dummy load 
Contributor 2024
User avatar

Joined: Mon Nov 11, 2013 10:41 pm
Posts: 2273
Location: Walsall IO82XN
Feedback: 8 (100%)
Reply with quote
Post Re: Dummy load
g1lov wrote:
Mornin guys n Gals.

I am going to build a dummy load for aprox 150w. Where is the best place for resistors. Without a bleeding 4.50 surcharge .

Advice on the best ones to get

Taa
Paul


150-Watt 50 Ohms up to 3GHz >>> http://uk.mouser.com/ProductDetail/Bourns/CHF8838CNF500L/?qs=sGAEpiMZZMvJ0LzZQ6JhWoeupu7VKXyE2vmnDd%252b9Eao%3d

They do other resistors up to 800-Watts!


Sat Aug 30, 2014 12:55 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Wed Jul 16, 2008 8:04 pm
Posts: 321
Location: Liverpool. Laaaaa!!
Feedback: 46 (100%)
Reply with quote
Post Re: Dummy load
Cheers Guys Looks like the way to go
Think I have got a suitable heatsink to bolt it to

Paul

_________________
Paul G1LOV Liverpool laaaa

Any and All PM's will be replied to..
Not like some on here !!!!


Sat Aug 30, 2014 7:23 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Wed Jul 16, 2008 8:04 pm
Posts: 321
Location: Liverpool. Laaaaa!!
Feedback: 46 (100%)
Reply with quote
Post Re: Dummy load
Hi Guys

Dummy load made and working also checked on analyser and all looks great. have run 100w into it and bearley gets warm.

used one of those 150w dummy load , RFP150N50TE , 150 Watts / 50 OHm / 2,5GHz and a pc processor heatsink.

cheers for the advice

Paul


Attachments:
File comment: Heatsink top view with resistor inside bolted to copper core
heatsink top view.jpg
heatsink top view.jpg [ 146.21 KiB | Viewed 2867 times ]
File comment: Side view
Heatsink side view.jpg
Heatsink side view.jpg [ 56.07 KiB | Viewed 2867 times ]
File comment: This is the resistor
150w Resistor.jpg
150w Resistor.jpg [ 4.65 KiB | Viewed 2867 times ]

_________________
Paul G1LOV Liverpool laaaa

Any and All PM's will be replied to..
Not like some on here !!!!
Sun Sep 07, 2014 7:28 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Wed Jul 16, 2008 8:04 pm
Posts: 321
Location: Liverpool. Laaaaa!!
Feedback: 46 (100%)
Reply with quote
Post Re: Dummy load
Will also take a fan on top just in case


Attachments:
20140907_200819_resized.jpg
20140907_200819_resized.jpg [ 57.85 KiB | Viewed 2860 times ]

_________________
Paul G1LOV Liverpool laaaa

Any and All PM's will be replied to..
Not like some on here !!!!
Sun Sep 07, 2014 7:39 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Tue Apr 03, 2012 11:58 am
Posts: 1048
Location: Stockport, Cheshire.
Feedback: 35 (100%)
Reply with quote
Post Re: Dummy load
Nice one! :)

That part number doesn't come up on that site posted...

Can you give me a link to the resistor you bought? Thanks.

_________________
Build a man a fire, he'll be warm for a night. Set a man on fire and he'll be warm for the rest of his life.


!!!!!!!!!!!!!!!!!!!!!!FAFFER!!!!!!!!!!!!!!!!!!!


Sun Sep 07, 2014 8:33 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Wed Jul 16, 2008 8:04 pm
Posts: 321
Location: Liverpool. Laaaaa!!
Feedback: 46 (100%)
Reply with quote
Post Re: Dummy load
No probs, I got it off ebay here is link to ebay item

http://www.ebay.co.uk/itm/-/161397954136

cheers

Paul

_________________
Paul G1LOV Liverpool laaaa

Any and All PM's will be replied to..
Not like some on here !!!!


Sun Sep 07, 2014 8:45 pm
Profile Send private message

 Dummy load 
Contributor 2023
User avatar

Joined: Tue Apr 03, 2012 11:58 am
Posts: 1048
Location: Stockport, Cheshire.
Feedback: 35 (100%)
Reply with quote
Post Re: Dummy load
Cheers Laaa! :good:

_________________
Build a man a fire, he'll be warm for a night. Set a man on fire and he'll be warm for the rest of his life.


!!!!!!!!!!!!!!!!!!!!!!FAFFER!!!!!!!!!!!!!!!!!!!


Sun Sep 07, 2014 10:24 pm
Profile Send private message
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore.