Doorbell voltage?
- Thread starter drewdin
- Start date
Help Support House Repair Talk:
Wuzzat?
Well-Known Member
- Joined
- Jan 20, 2010
- Messages
- 2,471
- Reaction score
- 176
DC may work for a simple conventional doorbell but you may need to make or buy a dropping resistor to get rated life from the bell.
In addition, if the bell has moving contacts they won't last as long switching DC, but then you could put an arc-suppression network across the contacts.
And you may want to fuse the DC to limit the power/energy it can deliver.
This is getting pretty messy pretty fast.
Try to get the specs on your bell and/or post photos of the gizzards before hooking up the 24 vdc.
Last edited:
nealtw
Contractor retired
The bell or chime should have voltage marked on it and it should be AC.
drewdin
Junior Member
- Joined
- Aug 9, 2012
- Messages
- 440
- Reaction score
- 38
right now there is a transformer connected to the panel and running low voltage to the existing doorbell. I'll have to get my meter and measure the voltage coming out of the transformer. I have a pretty nice switching power supply that converts the 110 down to 24vdc that I would like to use in place of the crappy transformer if I can. I'll check it tonight and post some pics, thanks.
