QRZ Forums   QRZ Ad 416
 
 Forum Home   QRZ Home 



QRZ Ad 1991
QRZ Ad 1440
QRZ Ad 55

QRZ Ad 1496
QRZ Ad 2038

Google Search
 
QRZ Web




 

Do you find QRZ helpful?
We appreciate your support.
  #1  
Old 11-07-2009, 06:31 PM
KA0JON KA0JON is online now
Ham Member
 
Join Date: Apr 2001
Posts: 23
Default Thermal Coupler

Anyone know where I can get a Thermal Coupler for a cushman CE-6A Crystal Oscillator?
All I can find on it, it says Thermal Coupler 141 Degree C. Any help would be appreciated.

Got to looking closer it says Thermal Cutout.

KA0JON - David

Last edited by KA0JON; 11-07-2009 at 07:03 PM.
Reply With Quote
  #2  
Old 11-07-2009, 08:33 PM
KL7AJ's Avatar
KL7AJ KL7AJ is online now
Ham Member
 
Join Date: Mar 2003
Location: 3763 Lyle Avenue, North Pole, AK 99705
Posts: 13,232
Default

Quote:
Originally Posted by KA0JON View Post
Anyone know where I can get a Thermal Coupler for a cushman CE-6A Crystal Oscillator?
All I can find on it, it says Thermal Coupler 141 Degree C. Any help would be appreciated.

Got to looking closer it says Thermal Cutout.

KA0JON - David
How do you know it's bad? Is it a resettable type? These are very seldom the problem. It looks like your thermostat got hung, which in turn caused the cutout to trip.

Eric
__________________
That's not right. It's not even wrong.
-----Wofgang Pauli-----
Reply With Quote
  #3  
Old 11-07-2009, 09:13 PM
KA0JON KA0JON is online now
Ham Member
 
Join Date: Apr 2001
Posts: 23
Default

Quote:
Originally Posted by KL7AJ View Post
How do you know it's bad? Is it a resettable type? These are very seldom the problem. It looks like your thermostat got hung, which in turn caused the cutout to trip.

Eric
Yes this is the resettable type. It took 1 of the diodes of fullwave bridge. +output of bridge goes to thermal cutout in series with the heating coil wrapped around the xtal. From what I'ved traced in the circuit 120 vac comes into fullwave bridge and then threw the thermal cut out to the coil. Other side of coil goes to minus side of bridge.

David
Reply With Quote
  #4  
Old 11-07-2009, 09:34 PM
KL7AJ's Avatar
KL7AJ KL7AJ is online now
Ham Member
 
Join Date: Mar 2003
Location: 3763 Lyle Avenue, North Pole, AK 99705
Posts: 13,232
Default

Quote:
Originally Posted by KA0JON View Post
Yes this is the resettable type. It took 1 of the diodes of fullwave bridge. +output of bridge goes to thermal cutout in series with the heating coil wrapped around the xtal. From what I'ved traced in the circuit 120 vac comes into fullwave bridge and then threw the thermal cut out to the coil. Other side of coil goes to minus side of bridge.

David
I don't know the intimate details of the oven control of a Cushman, but I do know they're pretty sophisticated. There's probably an integral cycle temperature controller on the A.C. side of the bridge, and SOMEsort of feedback circuit. Do you have the manual for it?

Eric
__________________
That's not right. It's not even wrong.
-----Wofgang Pauli-----
Reply With Quote
  #5  
Old 11-07-2009, 11:36 PM
KA0JON KA0JON is online now
Ham Member
 
Join Date: Apr 2001
Posts: 23
Default

Quote:
Originally Posted by KL7AJ View Post
I don't know the intimate details of the oven control of a Cushman, but I do know they're pretty sophisticated. There's probably an integral cycle temperature controller on the A.C. side of the bridge, and SOMEsort of feedback circuit. Do you have the manual for it?

Eric
Somewhere here my shack, I found my Cushman CE-3 Manual, thought I had them both together at one time.
Time to go digging in shack.

David
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 09:52 PM.


Copyright © 1995-2008 QRZ.COM