Hi I just removed this from my board. It has 6 pins.. each pair has a shorted leg. I'm guessing its broken. The pcb where it mounts would not make sense if these pins where to be shorted. Here is the pic.

Could anyone tell me the value of this capacitor and its type? I made pics from all possible angles.

Best Regards

For all angles of the capacitor:
Album link: photobucket.com/weirdcap

 

Or maybe it isn't a capacitor?

 

Hello,

It seems to be : ZKB407/043 03-PF-438 6pins brown 17x15x10mm transformer VAC

http://transfer-elektronik.com/cgibin/shop?info=6108&sid=4dc20be6

Bertus

 

Hello,

It seems to be : ZKB407/043 03-PF-438 6pins brown 17x15x10mm transformer VAC

http://transfer-elektronik.com/cgibin/shop?info=6108&sid=4dc20be6

Bertus

I guess it would make sense... Any idea what kind of transformer it is? I only measure resistance or short in pairs. There is no resistance across which made me think it was a shorted cap.

 

Hello,

From what did you take the part?
What was the function of the board?

Bertus

 

Hello,

From what did you take the part?
What was the function of the board?

Bertus

Function:
It is a DC servo shunt motor driver board. 190VDC field/armature 4,7A 0,33A. Variable speed with tach and pot input.

This part is located near two SCR. Goes to gate and some resistors near it. It is a bit weird for me to be transformer because I thought it was DC voltage.

 

Gate drive pulse transformer, to isolate the gate drive circuit from the power circuit?

If so, the winding resistances could be quite low. You might mistake them for short-circuits.

 

It only requires a pulse to start an SCR, and this is probably a pulse transformer.

 

Gate drive pulse transformer, to isolate the gate drive circuit from the power circuit?

If so, the winding resistances could be quite low. You might mistake them for short-circuits.

So its like an isolating transformer? each pair have low resistance. but crosswise or diagonally there are is no resistance at all. How do I check a pulse transformer? (Without scope)

 

If each of the three pairs has a low resistance, and all other measurements between pairs have infinite resistance, then the pulse transformer is likely OK.

Ken

 

VAC doesn't list that model and it looks like they've changed their numbering system: http://www.vacuumschmelze.de/index.php?id=346&L=2. We need a German in Hanau to go get the datasheet.