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Make this Simple 2 Tone Door Bell Circuit using IC 555

Last Updated on June 6, 2025 by Admin Leave a Comment

two tone door bell circuit compressed

Here we are making an electronic doorbell circuit that makes a dual-tone sound. So this thing is designed using the well-known IC 555. That IC 555 is something we see […]

Filed Under: Audio and Amplifier, Household Circuits Tagged With: 555, Bell, Door, Simple, Tone

Office Bell with IN/OUT Indicator Circuit

Last Updated on November 27, 2018 by Admin Leave a Comment

This office bell with IN/OUT indicator circuit utilizes three 7-segment, common anode displays rather than a couple of LEDs for the in/out indicator as is done commonly. As soon as […]

Filed Under: Indicators Tagged With: Bell, IN, Indicator, Office, OUT

Programmable electronic Door Bell Circuit

Last Updated on June 6, 2025 by Admin 1 Comment

chime el

This programmable electronic musical door bell circuit is really simple since the integrated circuit really does all the things! It should be stated that we now have created some substantial […]

Filed Under: Audio and Amplifier Tagged With: Bell, Door, Electronic, Programmable

Simple 220V Ding Dong Bell Circuit

Last Updated on January 10, 2018 by Admin Leave a Comment

ding dong

The post explains how to make a simple 220V mains operated ding dong bell circuit which will generate a powerful ding dong sound each time someone presses the bell push […]

Filed Under: New Circuits Tagged With: 220V, Bell, Ding, Dong, Simple

Sound Operated Music Bell

Last Updated on January 10, 2018 by Admin 1 Comment

ringing bell

In this post we learn how to make a simple sound operated music bell circuit which can be installed in homes for enabling the visitors to ring the door bell […]

Filed Under: New Circuits Tagged With: Bell, Music, Operated, Sound

How to Make a Office Call Bell Network Circuit with LED Monitor

Last Updated on February 17, 2018 by Admin Leave a Comment

officeroombellnetwork

The submit describes a call bell network system for office complexes which might be employed for contacting and tracking office member’s attendance and reply from the specific meant office chamber. […]

Filed Under: New Circuits Tagged With: Bell, Call, LED, Monitor, Network, Office

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