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 Post subject: FOUND; lock please WTB: 4 ohm 10 or 12W Resistors
PostPosted: Jun Mon 29, 2020 9:39 pm 
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Joined: Mar Tue 10, 2020 5:11 am
Posts: 199
Location: Mission Viejo, CA
Before I go buy them from a local store, thought I'd ask here: I need at least four, and preferably six, identical (basically matched):

4 ohms, 10 or 12 watt

...... power resistors. They need to be approximately the same values (within at least 10%) because they will be used as current-sharing resistors for four Germanium power transistors. Anyone have?? Thanks, SteveH

EDITED to reflect a new-found source of one value.


Last edited by SteveH on Jul Fri 03, 2020 5:43 pm, edited 2 times in total.

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 Post subject: Re: WTB: 125 ohm and 4 ohm 10 or 12W Resistors
PostPosted: Jun Mon 29, 2020 10:15 pm 
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Joined: Aug Wed 26, 2009 1:45 am
Posts: 3089
Location: Sioux Falls, SD 57108
I have some of them. No 4 ohm but I do have three 5 ohm. Let me know. Thanks.


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 Post subject: Re: WTB: 4 ohm 10 or 12W Resistors
PostPosted: Jun Tue 30, 2020 5:00 am 
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Joined: Sep Tue 30, 2014 6:08 am
Posts: 5600
Location: Norfolk, VA
SteveH wrote:
Before I go buy them from a local store, thought I'd ask here: I need at least four, and preferably six, identical (basically matched):

4 ohms, 10 or 12 watt

...... power resistors. They need to be approximately the same values (within at least 10%) because they will be used as current-sharing resistors for four Germanium power transistors. Anyone have?? Thanks, SteveH

EDITED to reflect a new-found source of one value.



Much easier to find 3.9 ohm 10 watt resistors - still within your tolerance with modern tolerance of 5%...NTE has them.

https://www.ntepartsdirect.com/ENG/PRODUCT/10W3D9


Although 4 ohm is still a standard Vishay Dale and Ohmite Value in 10W wirewounds:

Allied is least expensive, and has stock:
Allied: https://www.alliedelec.com/product/vish ... /70201695/
Mouser is out:
https://www.mouser.com/Passive-Componen ... 10&FS=True
Digi-Key:
https://www.digikey.com/products/en/res ... ageSize=25

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USN Retired 1984-2006 (Avionics/Cal)


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 Post subject: Re: WTB: 4 ohm 10 or 12W Resistors
PostPosted: Jun Tue 30, 2020 8:33 am 
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Joined: Mar Tue 10, 2020 5:11 am
Posts: 199
Location: Mission Viejo, CA
My local parts store has them, too, and for about the same price (plus free shipping!!). I was trying to give ARF folks a chance at selling something to me :D


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