How solder iron work

Thread Starter

RRITESH KAKKAR

Joined Jun 29, 2010
2,823
Hello guys,
i want to know how solder iron work?
There are 3 pins one with diode in wire path, why?
 

Hypatia's Protege

Joined Mar 1, 2015
3,197
ADDENDUM:

Is the diode external to the assembly or is it internal and detected via continuity examination of the leads? (My last post assumed the latter)...
 

Dodgydave

Joined Jun 22, 2012
8,373
Sounds like the diode is to put the iron in half wave mode to keep it warm when its in the stand, then you short the diode out for full heat,
 
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