News post : Electronic Projects Circuits :Eleccircuit.com |  |
| 5-30 minuts timer alarm circuit using IC555 Posted: 13 Aug 2013 11:33 PM PDT This circuit uses a 555 IC timer number. This small,compact and portable. For the snooze alarm by buzzer when some 5 to 30 minutes. It makes clear the brain is ready to continue to work. When the switch S1 to enter a power supply circuit, it will be ready to go.The circuit includes a circuit [...]  |
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