Showing posts with label dong. Show all posts
Showing posts with label dong. Show all posts
Tuesday, April 2, 2013
Ding Dong Door Bell Circuit Design using 8021 2 IC
The following schematic shows a Ding Dong Door Bell Circuit Design using 8021-2 IC. The 8021-2 IC is an 8-pin DIP having an in-built circuitry to produce dingdong sound each time its pin 3 is pulled low. The Ding Dong Door Bell Circuit Design consists of: On-Off Switch, 3Volt Battery, push to on switch, speaker, transistors and resistor.
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