Just wanting to know if this transformer is shorted.
Fairly sure it is....
The only measuring devices I have are:
Fluke 87v
peak atlas LCR45
Out of circuit:
Most of the pins hover around .2ohms on the fluke and .1 on the LCR45
The LCR45 says most combinations of pins are on average are around 30uH and extremely low resistance.
Yes some pins are linked.
Cheers 🙂
Fairly sure it is....
The only measuring devices I have are:
Fluke 87v
peak atlas LCR45
Out of circuit:
Most of the pins hover around .2ohms on the fluke and .1 on the LCR45
The LCR45 says most combinations of pins are on average are around 30uH and extremely low resistance.
Yes some pins are linked.
Cheers 🙂
Attachments
Unless there is an air gap in the core some combinations should measure more than 30 uH me thinks
Primary of a switcher trans former have higher inductance typically.
Especially something like an traditional Esomething core with yellow tape with not that high.
But I can be wrong, what type if circuit is it?
Primary of a switcher trans former have higher inductance typically.
Especially something like an traditional Esomething core with yellow tape with not that high.
But I can be wrong, what type if circuit is it?
Cheers man.
It's a main transformer of a power supply for a theatre amp.
I've tried most combination but I'll go through and measure every combination of pins.
It's just seems extremely low which is suggesting shorts to me.
It's ferrite core.
If I could get a PSU board I would but can't find any. It's an expensive amp so it's down to fixing at component level.
It's a main transformer of a power supply for a theatre amp.
I've tried most combination but I'll go through and measure every combination of pins.
It's just seems extremely low which is suggesting shorts to me.
It's ferrite core.
If I could get a PSU board I would but can't find any. It's an expensive amp so it's down to fixing at component level.
Hard to tell but I think that if you put it back oriented at PCB you can see what is primary, secondary and possible extra secondary windings etc.
Measuring primary indicates short, secondary is impossible to say but I would say if any winding goes, it is primary because that is where you feed in energy.
What was the symptoms ?
if the primary is shorted it would drive the core into saturarion and the switching transistors take a beating unless they already are dead or a overcurrent on primary latches in.
Measuring primary indicates short, secondary is impossible to say but I would say if any winding goes, it is primary because that is where you feed in energy.
What was the symptoms ?
if the primary is shorted it would drive the core into saturarion and the switching transistors take a beating unless they already are dead or a overcurrent on primary latches in.