@▷ Door buzzer with 555 | Diagram for Schematic

Door buzzer with 555

This is easy circuit buzzer. It use IC 555, Speaker 25 -80 OHM.

I demolishes a store-room , see old loudspeaker and other equipment a little again. Then born the though builds Door Buzzer by use , IC 555. Perform sound electric bell origin. When press S1 as a result have a voice fair loud. This circuit almost must not do anything. Because divisible Amen! should use 25-80ohm size loudspeakers. will make good sound use force against electricity low work or economize the electricity. You will may use 9V batteries all right sir.

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555, Audio - Alar, Circuit diag, alarm home s