Battery doorbell local repeater?

T i m · 2020-10-22T10:37:10+00:00

Hi all, I appreciate this is a design rather than repair question but I appreciate there are some very skilled people here. ;-) Scenario. I have a wired bellpush on the front door (frame) that runs to a battery 'Ding-dong' type solenoid chime further back in the house, the idea being that 'we' can hear it anywhere in the house (we can) and also in the back garden if we are lucky (we also sometimes can). The 'problem' is that you can't generally hear it outside the DG front door and so couriers often ring the bell *and* repeatedly bang on the glass door or flap the letterbox flap, sometimes winding the dog up thinking it's an aggressor. ;-) So, I was just wondering ... if I had some sort of small electro-mechanical buzzer (possibly to also give physical feedback), just inside the front door (on the inside door frame, directly behind the bell push for best feedback and easy wiring) that you could hear from the outside, that might give anyone on the outside some level of positive feedback that the bell had worked (hopefully anyway)? So, I am limited to 6V DC via the 4 x C cells (currently Ni-Mh's so only 4.8V) and don't want to add any real parasitic drain, especially if I go back to alkaline cells to get the full 6V. So I was thinking (but am no electronics design engineer) of some form of diode fed - series resistance cap that could be charged by the 6V supply seen at the back of the bell push that could then be discharged via a low voltage buzzer when the button is pressed (even if only once and for ~1s) ... and would then reset ready for another press say in 30 seconds time (given the original doorbell will continue to work as normal etc). Things I believe are relevant ... you would need a cap big enough to provide as good a quality level of power long enough to give a significant 'buzz' to be heard. The charging resistance would need to be low enough to not cause the bell to hang on the 'Ding', once the button was released (the chime solenoid just returns under...

Oct 22, 2020 40 Replies

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Edward Hernandez 5 years ago

As ironically stated by the John Doe troll in message-id who has posted yet another incorectly formatted USENET posting on Wed, 28 Jul 2021 19:33:37 -0000 (UTC) in message-id .

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Battery doorbell local repeater?

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