Smart Home & Appliances forum

General discussion

How to connect an old tel. bell to door bell.

by nichosi / September 19, 2012 5:27 AM PDT

Hi,
I have an old Telefone very loud Bell & want to connect it to the gate small bell (which i cannot hear).

I wish I could attach a foto here, but it has 2 2" bells, silvery cylinder el. component 3" long, 2 electromagnets 2" long & 10 screw connectors for wires.

It used to work untill a disconnected it & now use cordless telefone.

Does anybody have a cristall ball to see it & advise if I can use it as a gate bell? .....thanx ......nick

Post a reply
Discussion is locked
You are posting a reply to: How to connect an old tel. bell to door bell.
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: How to connect an old tel. bell to door bell.
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
FUN PROJECT!!!
by R. Proffitt Forum moderator / September 19, 2012 5:36 AM PDT

The problem here is that we have a few issues to solve. The first is understanding that the really old ringers required a signal from the telephone company so let's find out what that signal was. (I'm going to use duckduckgo instead of google here.)

http://duckduckgo.com/?q=telephone+ring+signal+specifications

AHA, we find out it matters what COUNTRY this Telephone is from. You spelled it as "Telefone" so for this discussion you'll have to use your country's specs. For the USA I read at http://www.epanorama.net/circuits/telephone_ringer.html that it's "20Hz minimum ring voltage supplied is 40Vrms (delivered into a 5 REN load)."

Now that we know this we have to find a way to create such a signal. Again, we duckduckgo.com as above to find this link. http://www.techlib.com/electronics/telephone.html

The second schematic is what we need. Now try connecting your wires from your current bell to that ring inhibit and see if that works for you.
Bob

Collapse -
How to connect an old tel. bell to door bell
by nichosi / September 19, 2012 5:43 AM PDT

Just found how to attach a foto of the old bell.

Collapse -
And it looks like you need to build the circuit to drive it.
by R. Proffitt Forum moderator / September 19, 2012 5:49 AM PDT

Since most AC or MAINS is 60Hz and these bells need 20Hz (varies on country) then you are looking at a small electronics project.
Bob

Collapse -
How to connect an old tel. bell to door bell
by nichosi / September 19, 2012 6:22 PM PDT

Sorry for the shortcut "....fone", it is here in the old UK BT.

Did you see the attached foto of it?

Could'nt make a word of all that but the duck was fine.

Collapse -
Saw the foto
by R. Proffitt Forum moderator / September 20, 2012 12:57 AM PDT

And it sounds like a fun project. The links I gave have the necessary details but I can imagine those that don't make their own stuff may feel challenged.
Bob

Collapse -
How to connect an old tel. bell to door bell
by nichosi / September 20, 2012 4:01 AM PDT
In reply to: Saw the foto

OK thanx all, can never manage it, will sell it !!!???

Popular Forums
icon
Computer Help 47,885 discussions
icon
Computer Newbies 10,322 discussions
icon
iPhones, iPods, & iPads 3,188 discussions
icon
Security 30,333 discussions
icon
TVs & Home Theaters 20,177 discussions
icon
HDTV Picture Setting 1,932 discussions
icon
Phones 15,713 discussions
icon
Windows 7 6,210 discussions
icon
Networking & Wireless 14,510 discussions

CNET Forums

Looking for tech help?

Whether you’re looking for dependable tech advice or offering helpful tricks, join the conversation in our forums.