What does RT mean on a pcb

Probably a MOV for surge protection.

It's a 'surgeguard' style NTC thermistor. Have you measured them ? They can run quite hot btw.

Graham

They look similar to NTCs too. The MOV will be 'across the line' where an NTC will be in series.

Graham

hi THANKS ALOT its an NTC then but how do i find the value of the one i need

been

about

Highly likely that RT means Resistor - Temperature (dependant).

It will be a NTC inrush current suppressor.. Since the unit is not likely to be using more than a couple of 10's of watts at most you could use one such as this

Measure a good one ?

They're specced by surge capability (related to size) and hot and cold resistance. You should be able to find a suitable replacement from that.

Graham

NTC

resistance.

THANKS FOR YOUR REPLIES I GET SOME ON ORDER!!!

Could this device (or similar) be put in series with my halogen puck lights that keep blowing bulbs - and would it help?

Yes it could.

It might do. It will certainly reduce the inrush.

Graham

cant

fuse-

that

Could you please explain what a "puck light" is?

I am familiar with the standard halogen downlights operating from ac mains supply via a transformer but not knowing the specifics of your particular halogen I couldn't say whether the NTC would help.

Is it a microprocessor PCB? Does it say "RTS"?

"Return to sender, address unknown".

But that's just a guess...

I would guess he means the hockey puck shaped halogen fixtures meant for mounting under kitchen cabinets.

snipped-for-privacy@NOSPAM.hfx.andara.com wrote in news: snipped-for-privacy@4ax.com:

When that happens, start by taking an accurate voltmeter and measuring the AC voltage on the lamps. If it's too high, of course they will keep blowing.

What about other light bulbs? Do they keep blowing too? What is the voltage at an outlet?