Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Thermo switch for transmitter cooling fans...  (Read 575 times)
WB4LCA
Member

Posts: 1




Ignore
« on: March 02, 2008, 12:27:37 AM »

Would like an approxamte 100*F surface mount thermo switch to activate .2amp 12vdc curcuit purpose being to add cooling fans to home brew repeater heat sink for on demand auxilliary cooling. I was told these were available at Radio Shack(cell phone city)?...I can't find them (or equivolent)??
Logged
KE4DRN
Member

Posts: 3710




Ignore
« Reply #1 on: March 03, 2008, 06:38:26 PM »

hi b,

mouser.com stocks thermistors,
no min. order needed.

this circuit uses 1n4004 diodes
http://sound.westhost.com/project42.htm

73 james
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!