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 Low battery cutoff for Inverter with 4047 ic

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okpom Posted - Jul 07 2015 : 10:13:33 PM
Please Sir, I would like to know the exact circuit that I can use to shut down my inerter when the battery is below 10v and which of the ic pin should I connect it? I used 4047ic.

Thanks.
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audioguru Posted - Jul 11 2015 : 9:00:08 PM
The inverter with the CG4047 IC that I fixed is at the Electronics-lab website forum, not here. In that forum there is a circuit to stop the inverter when the battery voltage becomes too low.
Aaron Cake Posted - Jul 08 2015 : 10:17:22 AM
Looking at the datasheet, that chip doesn't have any capability of sensing supply voltage.

Therefore you need an additional circuit.

An op-amp set up as comparator would be the most stable choice and have some adjustability.

http://www.renesas.eu/edge_ol/engineer/03/index.jsp

Then use the output to bring the "enable" pin of the 4047 high/low/whatever state stops the chip.

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