TVs & Home Theaters forum


How This Door Bell Circuit Work?

by AthenaDemande / January 25, 2013 8:26 PM PST
this is a door bell circuit diagram tat i drew by looking at a broken door bell. the bell is working, i think but the volume is low. so i replaced it wit another speaker of 8 ohm. but still the volume is low. by knowing the working of this circuit i can repair it pls help Happy
also pls show me how to reorganize the components in the circuit diagram into group like rectification part sound producing part etc
Answer This Ask For Clarification
Discussion is locked
You are posting a reply to: How This Door Bell Circuit Work?
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 This Door Bell Circuit Work?
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.

All Answers

Collapse -
Wrong forum
by Pepe7 / January 26, 2013 12:57 AM PST

Try a DIY electronics/home improvement forum. This is Audio/video related topics.

Collapse -
Odd forum to choose. But it does not work.
by R. Proffitt Forum moderator / January 26, 2013 1:09 AM PST

I see no power so if you built it, it would be silent.

Collapse -
(NT) Power Of About 220V AC Is Given At J1 And J2 Points.
by AthenaDemande / January 26, 2013 2:42 AM PST
Collapse -
by R. Proffitt Forum moderator / January 26, 2013 3:00 AM PST

Why leave out such an important detail? No one could have guessed that.

Collapse -
220vac at J1-J2?
by Oldartq / January 26, 2013 2:50 PM PST

You got to be kidding. 220v just doesn't seem right to me (not that I know what I am talking about...hehe). So you tell me; what is that transistor circuit act like...amplifier or oscillator?

Collapse -
by AthenaDemande / January 27, 2013 2:57 AM PST
In reply to: 220vac at J1-J2?

i dont no anything except this circuit contain som resistors, capacitors, transformer, speaker, transistor, and this is a door bell circuit.

Collapse -
Thanks for adding more detail.
by R. Proffitt Forum moderator / January 27, 2013 3:01 AM PST

It appears you need a louder doorbell. Since writing enough words to entail a course in electronics is not possible in this box my advice is to replace this door bell with a louder one.

Collapse -
i dont want u to give a cousre on electronics
by AthenaDemande / January 27, 2013 11:06 AM PST

just tell me how this circuit works. thats all i am asking Sad

Collapse -
That's what schematics do.
by R. Proffitt Forum moderator / January 27, 2013 1:36 PM PST

Sorry but I can't put all the classes I took on electronics inside 3 paragraphs.

I'm truly sorry about that and must bow out.

Collapse -
Good grief, look on youtube
by Pepe7 / January 28, 2013 11:20 AM PST

Everything's right there. Some very long courses with detailed schematics for free, even. Not hard to find if you spend a little time there searching.

Collapse -
thanks all
by AthenaDemande / November 7, 2013 2:24 AM PST

i dumped that old door bell and bought a new one Silly
problem solved Silly
but will try to fix it one day ( i love electronics its just i dont know it SillySilly )

Popular Forums
Computer Help 49,613 discussions
Computer Newbies 10,349 discussions
Laptops 19,436 discussions
Security 30,426 discussions
TVs & Home Theaters 20,308 discussions
Windows 10 360 discussions
Phones 15,802 discussions
Windows 7 7,351 discussions
Networking & Wireless 14,641 discussions

CNET Holiday Gift Guide

Looking for great gifts under $100?

Trendy tech gifts don't require a hefty price tag. Choose from these CNET-recommended useful and high-quality gadgets.