thermostatic Switch

Dr. ODD · 11th September 2004, 05:19 PM

Hello
I have a Question about the thermostatic Switch in Aleph Amps

Is it a "you canot kill this Amp even if you take it to the Dessert and listen to your music whith 60 degree outside tempratur" decision, or is it " I dont want you to burn down your House if something fails" decision ??

In other words, is it save to leave it out or is it nessesary to have it ???? And what cold be the failiure where I need it ???

Nelson Pass · 11th September 2004, 06:04 PM

The answer is both.

With the proper fuse value, it should not be possible to
ignite something like cheesecloth (the standard material)
under any failure mode in a properly designed product.

This of course presumes that the consumer has not put a
20 amp fuse in the product.

At the same time, we have been able to confirm that amplifiers
do not tend to blow up when sinks reach 75 deg C., which is
the value we specify.

We do commonly encounter consumers who run the product in
a closed box or on top of another one or more of our amplifiers.

Dr. ODD · 12th September 2004, 08:06 AM

Thank you

Adams_Leo · 14th April 2007, 01:48 AM

I try to find Thermostatic Switch@75C part number in google.but can not find anything.Any body provide this part detail part number or manufacturer?very thanks.

GRollins · 14th April 2007, 02:10 AM

Thermostatic isn't a company, it's just saying that the switch functions like a thermostat. Parts catalogs abound in such things. Use any equivalent part that suits you.

Grey

Adams_Leo · 14th April 2007, 02:19 AM

Very thanks Grey.I found the detail in other thread
questions on aleph 2 parts

Regards
Leo

jgeissin · 19th April 2007, 02:51 PM

Look in Mouser under 'thermostat'. They are made by Stancor.
Thermal cutouts are hard to find anymore because everyone is reducing parts count, using electronics monitoring of heat or just don't care!
(Page 1624 of catalog 629, search for 'Stancor Snap Action Disc Thermostats').

nar · 23rd November 2011, 09:26 AM

Sorry to bump that old thread.

I currently build Aleph_J from my old Aleph_4 chassis and parts.

I use thermostatic switch, but since the amp is in 2 cases, I end up with no possibility to put it on mains ( 230V here ).

I happen to put it on the 24V rectified rails. I chose the CCS side, V+; instead of V-, because I thought it might be risky.
Assuming all the CCS are on V+ on the Aleph design, there is nothing dangerous for the speaker in case the thermostatic switch breaks the V+ rail ?

Thanks for your input.

Best,

nAr

Zen Mod · 10:15 AM

you'll kill your speakers , sooner or later

break a leg purposely , put longette on , just as precaution for breaking arm .......

nar · 23rd November 2011, 10:18 AM

Quote:

Originally Posted by Zen Mod

you'll kill your speakers , sooner or later

break a leg purposely , put longette on , just as precaution for breaking arm .......

I'm not able to translate Zen Mod language efficiently.

Do you mean I'd better use longer wires from the 230V to feed the thermostatic switch for safe operation ?

Best,

nAr

11th September 2004, 05:19 PM	#1
Dr. ODD diyAudio Member Join Date: Dec 2003 Location: Wolfsburg	thermostatic Switch Hello I have a Question about the thermostatic Switch in Aleph Amps Is it a "you canot kill this Amp even if you take it to the Dessert and listen to your music whith 60 degree outside tempratur" decision, or is it " I dont want you to burn down your House if something fails" decision ?? In other words, is it save to leave it out or is it nessesary to have it ???? And what cold be the failiure where I need it ???

14th April 2007, 01:48 AM	#4
Adams_Leo diyAudio Member Join Date: Apr 2003	Thermostatic Switch@75C I try to find Thermostatic Switch@75C part number in google.but can not find anything.Any body provide this part detail part number or manufacturer?very thanks.

19th April 2007, 02:51 PM	#7
jgeissin diyAudio Member Join Date: Jan 2005 Location: Elliottsburg, PA	Look in Mouser under 'thermostat'. They are made by Stancor. Thermal cutouts are hard to find anymore because everyone is reducing parts count, using electronics monitoring of heat or just don't care! (Page 1624 of catalog 629, search for 'Stancor Snap Action Disc Thermostats'). __________________ My wife is acting funny since I told her that I was bi-amping the listening room.

23rd November 2011, 09:26 AM	#8
nar diyAudio Member Join Date: Apr 2002 Location: near the sea	Sorry to bump that old thread. I currently build Aleph_J from my old Aleph_4 chassis and parts. I use thermostatic switch, but since the amp is in 2 cases, I end up with no possibility to put it on mains ( 230V here ). I happen to put it on the 24V rectified rails. I chose the CCS side, V+; instead of V-, because I thought it might be risky. Assuming all the CCS are on V+ on the Aleph design, there is nothing dangerous for the speaker in case the thermostatic switch breaks the V+ rail ? Thanks for your input. Best, nAr __________________ "... Audio needs the thinnest wire ..." Rowan McCombe "Just 'cause they can't hear or sense it themselves doesn't mean you can't !" Allen Wright

23rd November 2011, 10:12 AM	#9
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	you'll kill your speakers , sooner or later break a leg purposely , put longette on , just as precaution for breaking arm ....... __________________ 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 Last edited by Zen Mod; 23rd November 2011 at 10:15 AM.


	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

11th September 2004, 06:04 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	The answer is both. With the proper fuse value, it should not be possible to ignite something like cheesecloth (the standard material) under any failure mode in a properly designed product. This of course presumes that the consumer has not put a 20 amp fuse in the product. At the same time, we have been able to confirm that amplifiers do not tend to blow up when sinks reach 75 deg C., which is the value we specify. We do commonly encounter consumers who run the product in a closed box or on top of another one or more of our amplifiers.

12th September 2004, 08:06 AM	#3
Dr. ODD diyAudio Member Join Date: Dec 2003 Location: Wolfsburg	Thank you

14th April 2007, 02:10 AM	#5
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	Thermostatic isn't a company, it's just saying that the switch functions like a thermostat. Parts catalogs abound in such things. Use any equivalent part that suits you. Grey

14th April 2007, 02:19 AM	#6
Adams_Leo diyAudio Member Join Date: Apr 2003	Very thanks Grey.I found the detail in other thread questions on aleph 2 parts Regards Leo

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

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
switch-on, switch-off sequence for preamp/amp	cbutterworth	Tubes / Valves	1	2nd March 2007 12:41 PM
Never try to switch 450V DC at 3A with a conventional mains switch...	Eva	Power Supplies	28	1st November 2006 09:24 AM
Switch	DJ Exprice	Chip Amps	11	29th June 2006 01:41 PM
Main on/off switch for amp using a piezo switch	using_e	Solid State	13	20th June 2006 05:55 PM
Using a momentary switch for main power switch?	FullThrottleRic	Parts	9	25th June 2002 08:23 PM

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