Thermistor Location for F5 power supply - Page 2

Zen Mod · 19th May 2010, 10:45 PM

in both cases - xformer feels extremely bored - it just don't care where NTC is located .... as long it is in line with mains

westend · 20th May 2010, 05:25 AM

Here's another picture of the thermistors. I have both of them on the positive primaries. The very professional guard over the terminal block is part of a wrench display card from Sears.

njgale · 20th May 2010, 06:06 AM

Don't worry about the transformers being lonely - won't be long before they get to earn their keep

Thanks for the confirmation (and encouragement)

cheers
Nick

Nelson Pass · 20th May 2010, 05:23 PM

It's fine, not to worry.

njgale · 22nd May 2010, 06:24 PM

Thanks.

Checked it all out today and it fired up fine, series light bulb glowed briefly and then went out. 25.4v each side, nice and steady.

On to the next stage now

cheers
Nick

Nelson Pass · 22nd May 2010, 06:28 PM

You can be pretty sure that it's something simple, so look
for obvious errors.

njgale · 22nd May 2010, 09:01 PM

Sorry, my lack of clarity - there's no load attached :-( and the lightbulb is in series with the mains live (no variac so I wired up a The Dim-bulb Radio Tester).

Leaving it running for a while and I get a steady 25.4v ish each side of the supply (which I work out as right for 18v secondary * 1.414, and allowing for mains to wander about a bit)

I'm waiting for my thermal paste before I can attach the F5's and start biasing up

cheers
Nick

luvdunhill · 31st March 2012, 01:16 AM

Has anyone happen to find this wired thermistor used in the J2 for sale anywhere? Looks perfect for my application:

Zen Mod · 31st March 2012, 01:20 AM

CL60 ?

luvdunhill · 31st March 2012, 01:22 AM

Nothing that is available at Mouser or Digikey with CL60 in the title, plus searches for leaded thingys. I'm not sure if Papa insulated the leads and added that plastic cover thing, I was assuming not.

19th May 2010, 10:45 PM	#11
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	in both cases - xformer feels extremely bored - it just don't care where NTC is located .... as long it is in line with mains __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

31st March 2012, 01:20 AM	#19
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	CL60 ? __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to choose a thermistor to protect power supply?	G	Chip Amps	27	3rd March 2007 09:42 PM
Power supply component location.	HenryM	Chip Amps	0	20th January 2005 05:53 PM
Thermistor use in power amp bias servo circuit?	mhb	Solid State	7	19th January 2004 08:17 PM
Supply caps location in Bridgeclone	Ricren	Chip Amps	4	25th July 2003 05:26 PM
Thermistor Location	awhiteguy	Parts	12	15th November 2002 08:42 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

20th May 2010, 06:06 AM	#13
njgale diyAudio Member Join Date: Feb 2009 Location: Reading	Don't worry about the transformers being lonely - won't be long before they get to earn their keep Thanks for the confirmation (and encouragement) cheers Nick

20th May 2010, 05:23 PM	#14
Nelson Pass The one and only Join Date: Mar 2001	It's fine, not to worry.

22nd May 2010, 06:24 PM	#15
njgale diyAudio Member Join Date: Feb 2009 Location: Reading	Thanks. Checked it all out today and it fired up fine, series light bulb glowed briefly and then went out. 25.4v each side, nice and steady. On to the next stage now cheers Nick

22nd May 2010, 06:28 PM	#16
Nelson Pass The one and only Join Date: Mar 2001	You can be pretty sure that it's something simple, so look for obvious errors.

22nd May 2010, 09:01 PM	#17
njgale diyAudio Member Join Date: Feb 2009 Location: Reading	Sorry, my lack of clarity - there's no load attached :-( and the lightbulb is in series with the mains live (no variac so I wired up a The Dim-bulb Radio Tester). Leaving it running for a while and I get a steady 25.4v ish each side of the supply (which I work out as right for 18v secondary * 1.414, and allowing for mains to wander about a bit) I'm waiting for my thermal paste before I can attach the F5's and start biasing up cheers Nick

31st March 2012, 01:16 AM	#18
luvdunhill diyAudio Member Join Date: Jul 2006	Has anyone happen to find this wired thermistor used in the J2 for sale anywhere? Looks perfect for my application:

31st March 2012, 01:22 AM	#20
luvdunhill diyAudio Member Join Date: Jul 2006	Nothing that is available at Mouser or Digikey with CL60 in the title, plus searches for leaded thingys. I'm not sure if Papa insulated the leads and added that plastic cover thing, I was assuming not.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)