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
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All Answers

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

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

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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.

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(NT) Power Of About 220V AC Is Given At J1 And J2 Points.
by AthenaDemande / January 26, 2013 2:42 AM PST
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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.

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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?

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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.

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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.

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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

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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.

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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.

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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 )

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