just a quick one

[ross94]

hi guys, just a quick question here. I am setting up 2 dummy bellboxes with 12v led units for my grandparents back and front. I have bought an elmdene 12v 1 amp power supply. no problem setting it up. I was just wondering what the black circular thing is on the psu? it is connected to the live and neutral on the mains block just before the transformer.

no I have no intention on removing it before you say, just interested to know what it is.

thanks

 

[JohnD]

a photo would be nice.

 

[ross94]

​

 

[bernardgreen]

Probably a transient suppressor that will absorb any voltage spikes.

 

[EightyTwo]

Probably a transient suppressor that will absorb any voltage spikes.

Yes it is - with heatshrink over the top.

 

[ross94]

thanks that's cleared that up a transient voltage suppressor sounds handy. for some daft reason I thought it may have been a thermal trip monitoring the heat of the transformer, so if the transformer overheats it cuts off the supply.

can you guys recommend any good websites I would like to fit a mains spike suppressor for my alarm panel.

cheers

 

[Deryck Tintagel]

Security Warehouse here:

https://www.securitywarehouse.co.uk...5102b59446c7219dd386f04acc&keyword=suppressor

or Maplin here:

http://www.maplin.co.uk/p/transient-suppressor-metal-oxide-varistor-cp76h

 

[EightyTwo]

I love the ACT stuff... I never go anywhere without a few ACT1313 12V spike supressors!

 

[Europlex]

Why on earth do you still want those? Surely all detectors have this facility built in now? We've not used these for years now.

ps .... & no problems

 

[ross94]

thanks, it will have to be from maplins, the other site requires you to own or work for a security company to buy from there, annoying and understandable at the same time. As you can guess I'm just a diyer trying to fit an alarm (already fitted and working) to a professional standard.I'll pick up some heatshrink and some insulation connect it up. cheers