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Advice on relay

Moac · 2017-04-15 19:22:08

I want to install a wireless chime in parallel with existing wired doorbell. I picked up a wireless battery-operated kit in Woodies for €12. The installed Friedland wired bell system measures just under 10V ac although documentation led me to expect 8V ac. The wireless bell push is operated by 12V battery. Can someone…

15-04-2017 7:22pm

#1

Moac

Registered Users, Registered Users 2 Posts: 28 ✭

Join Date: June 2011

Posts: 19

I want to install a wireless chime in parallel with existing wired doorbell. I picked up a wireless battery-operated kit in Woodies for €12. The installed Friedland wired bell system measures just under 10V ac although documentation led me to expect 8V ac. The wireless bell push is operated by 12V battery. Can someone point me at a relay operated by 10V ac to switch 12V dc?

Thanks in advance.

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Comments

#2 15-04-2017 9:38pm

Pete67

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Join Date: March 2006

Posts: 1206

10VAC would not be a very common relay coil, but you could add a small bridge rectifier across the wired bell, the resulting DC voltage will be close to 12V so you could use a standard 12VDC automotive relay to switch the chimes. You will also need a smoothing capacitor across the DC terminals of the bridge rectifier, say something like 1000uF 25V would be fine.

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