Off grid and popping capacitors on electronics

[Mitchell Cunningham]

Need a tvr 14561 capacitor!
HELP

 

[cjdelphi]

So buy one?

 

[davenn]

Need a tvr 14561 capacitor!
HELP

that isn't a capacitor, it's a varistor

 

[hevans1944]

Google should be your friend. Look at this results page.

 

[Mitchell Cunningham]

that isn't a capacitor, it's a varistor

Ok, how was that helpful?
Do you know where I can purchase 1 and not purchase 1000 of them? TVR!
Thank you for you reply

 

[davenn]

Ok, how was that helpful?

cuz they are VERY different beasts !! and that helps you search for the correct part

Do you know where I can purchase 1 and not purchase 1000 of them?

farnell, digikey, mouser


are three initial places you can try

 

[(*steve*)]

If the title of this thread has any meaning, then buying 1000 replacements will not solve your problem.

If these devices are failing it is likely because your voltage is too high or the are high energy voltage spikes.

 

[Mitchell Cunningham]

If the title of this thread has any meaning, then buying 1000 replacements will not solve your problem.

If these devices are failing it is likely because your voltage is too high or the are high energy voltage spikes.

Correct!
Thank you for your time.
I'm off grid, supplying power with a generator to a inverter that charges my batteries. Then, comes my next quest. And that is a surge arrestor. The tvr in question was in my inverter. I can protect components inside the house at the panel but I'm trying to protect the inverter. Not finding anything the I am comprehending at this moment. This issue is out there but the solution is evading me.
Mitch

 

[Graham]

Hi Mitchell - did you find one? I am just salvaging parts off a board from a UPS and found one of these. I came across your post while I was trying to look up what on earth a TVR 14561 is!! It looked like a capacitor to me (albeit a very big one), but on the PCB it is labeled as an 'MOV' where capacitors are usually marked as C, and it has a strange diagramatic marking on the board that looks a bit like -NN-, so it piqued my interest...



Anyway - not really understanding what it does, or how I might use it - I have no use for it, and you are welcome to it if you are still in need...
I don't know what postage from Aus would be, but certainly cheaper than a job lot of 1000!!

 

[davenn]

but on the PCB it is labeled as an 'MOV' where capacitors are usually marked as C,

that's correct and that tells you the difference

and it has a strange diagramatic marking on the board that looks a bit like -NN-, so it piqued my interest...

basically it's telling you that it is like a pair of face to face diodes

Anyway - not really understanding what it does,

it's a surge/spike protector
They have a breakdown voltage when they will go short circuit and cause the mains fuse in the power supply to pop
in your case I see the fuse isn't there, rather it's position is linked out ... one then hopes that the building mains circuit breaker,
that that device is on, trips.

If it is the only part in the PSU board that fails, removing the blown MOV will allow the PSU to fire up ....
just keep in mind there is no longer any protection for the PSU


Dave