Thermoelectric Coolers (TEC) or Peltier Sensor

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OK, In Soldering Iron rated at 220V there is Diode in series as shown what is the use of it?
 
koolguy said:
OK, In Soldering Iron rated at 220V there is Diode in series as shown what is the use of it?
Click to expand...
You really need to back up your posts with schematics or something as we are not going to guess!!

If you are saying this you obviously have a schematic or you wouldn't know it was there!!! If you don't help us we can't help you..... Your posts lately have become more and more minimal.... If you don't know what a datasheet means when it states specifications and you have no idea why a diode is being used, then how the hell can you start teaching students.... I fear gravely for your graduates!!!
 
I mean does heating depend on half wave DC or AC Current through it?
 

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koolguy said:
I mean does heating depend on half wave DC or AC Current through it?
Click to expand...
This question is just wrong... and very reminiscent of previous members who ask for clarification, completely ignore responses and then blithely proceed on to next unfathomably ridiculous question that reveals a astonishingly(and me think's a total put on) shallow understanding of the basics... .

Could be wrong, of course .

What say, koolguy? (and happy Diwali to you as well!)
 
Thanks Sir
 
Happy Vishwakarma puja to All.
 

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Most Irons have a triac ( I think it will be connected to the three wires you have exposed ) If you google "220vac soldering iron circuit" you'll see what I mean.... The triac is gated by a diac, so that's what I think you are seeing!!
 
koolguy said:
koolguy said: ↑
I mean does heating depend on half wave DC or AC Current through it?
in post #24 there is series Diode what the use of it here?
Click to expand...

Without seeing the Circuit it connects to, It is Not Possible to know its real purpose.

Yes, heating could depend on heating with AC or half wave DC, but that diode looks too Small to be used for that purpose.

Koolguy, Where do you Live? Country?
How Old are You?
 
the diode is 1N4007 1amsp is not less with 220v.
i think we got it beacuse the iron is 25W
so, power = Voltage x Current
25=230xi
i= 0.108Amp
 
Yes Possibly, if the Iron is Direct 220 Volts.
But Many Irons use a transformer and operate at a lower voltage.

Koolguy, Where do you Live? Country?
How Old are You?
 
Yes Possibly, if the Iron is Direct 220 Volts.
But Many Irons use a transformer and operate at a lower voltage.

Koolguy, Where do you Live? Country?
How Old are You?
Click to expand...

hello sir,
i remember you on your circuit inverter, India
22
 
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