• It is currently Sun Jul 26, 2026 9:22 pm • All times are UTC + 10 hours [ DST ]

Negative Voltage Regulators

Are you building something? Share your resources with the locals - for more in depth D.I.Y. head to The Lab

Moderators: rick, Mark Bassett

Post a reply

Negative Voltage Regulators

Postby wez » Thu May 19, 2011 1:16 pm

does anyone have a good local source for negative voltage regulators? i'm after some TO-3 package 15V and 18V voltage regulators... seems pretty dumb but i'm struggling to find a supplier for the -15 and -18 (even the +18 actually). checked RS, jaycar, x-on, farnell... i thought these were pretty standard but maybe not?

part numbers would be L7815/7915 and L7818/7918 or similar (or LM320/340 in the old language).

actually I only need one of each, so if anyone has some lying around...

cheers, wez
wez prictor
composure music
http://www.composuremusic.com.au/

Australian importer of Crumar Mojo keyboards & accessories. Vintage keyboard fetishist.
User avatar
wez
Valued Contributor
Valued Contributor
 
Posts: 1259
Joined: Fri May 06, 2005 10:38 pm
Location: Slightly to the left.
Top

Re: Negative Voltage Regulators

Postby Barney Loveland » Thu May 19, 2011 7:04 pm

I'll check the workshop tomorrow.
Barney Loveland
Barney Loveland
Frequent Contributor
Frequent Contributor
 
Posts: 523
Joined: Mon May 09, 2005 5:28 pm
Location: Melbourne
Top

Re: Negative Voltage Regulators

Postby Futureman » Fri May 20, 2011 4:49 am

Not local, but ebay kills all others for cheapness on bits like that..

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

$2.80 for 10 delivered to your door?

Regards
Mike
Mike de Vrees

Purveyor of old stuff
User avatar
Futureman
Frequent Contributor
Frequent Contributor
 
Posts: 995
Joined: Wed Mar 19, 2008 4:47 pm
Location: Sydney
Top

Re: Negative Voltage Regulators

Postby wez » Fri May 20, 2011 11:55 am

Futureman wrote:Not local, but ebay kills all others for cheapness on bits like that..

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

$2.80 for 10 delivered to your door?

Regards
Mike


thanks mike.... how ridiculous that it might be easier to import such a trivial part from bulgaria or the netherlands! surely not.
wez prictor
composure music
http://www.composuremusic.com.au/

Australian importer of Crumar Mojo keyboards & accessories. Vintage keyboard fetishist.
User avatar
wez
Valued Contributor
Valued Contributor
 
Posts: 1259
Joined: Fri May 06, 2005 10:38 pm
Location: Slightly to the left.
Top

Re: Negative Voltage Regulators

Postby stosostu » Fri May 20, 2011 1:03 pm

That's the way it is with small electronics components these days. Silly, I know, but what can you do?
Bob Charman - Stockport Sound, SA
The Road Goes On Forever and the Party Never Ends..........
User avatar
stosostu
Regular Contributor
Regular Contributor
 
Posts: 458
Joined: Fri Jul 23, 2010 3:17 pm
Location: Clare and Gilbert Valleys, South Australia
Top

Re: Negative Voltage Regulators

Postby Thirteen » Fri May 20, 2011 4:22 pm

Futureman wrote:Not local, but ebay kills all others for cheapness on bits like that..

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

http://shop.ebay.com.au/i.html?_nkw=791 ... m270.l1313

$2.80 for 10 delivered to your door?

Regards
Mike


Not TO-3 cases though?
Steve Jones
User avatar
Thirteen
TRM Endorsed
TRM Endorsed
 
Posts: 1279
Joined: Fri Dec 01, 2006 5:08 pm
Location: Sydney
Top

Re: Negative Voltage Regulators

Postby Barney Loveland » Fri May 20, 2011 5:36 pm

I have one but not the other, from memory the 320? I'll be back there tomorrow.
Barney Loveland
Barney Loveland
Frequent Contributor
Frequent Contributor
 
Posts: 523
Joined: Mon May 09, 2005 5:28 pm
Location: Melbourne
Top

Re: Negative Voltage Regulators

Postby no-fi » Fri May 20, 2011 9:54 pm

this happy little fella does either voltage, with 2 extra resistors....
http://au.element14.com/jsp/search/prod ... KU=1094253


And if you want +18V in TO3, jaycar stock the LM317.
My name is Julian Higginson and I approve of this message.
no-fi
Frequent Contributor
Frequent Contributor
 
Posts: 515
Joined: Sat Feb 23, 2008 12:21 pm
Location: sydney
Top
Post a reply

Return to D.I.Y.

Who is online

Users browsing this forum: No registered users and 4 guests