News post & update: eleccircuit.com |  |
| Car forgot turn off headlights alarm Posted: 23 Jan 2014 03:09 PM PST If we forget to turn off the lights in the car or headlights on all night but in the morning you could not even start the car Because batteries lose some voltage, we lets to build the warning forgot off lights circuit better. As perfect circuit in Figure 1. Use CMOS-IC no-MC14023B. Which is a […]  |
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