All Questions
Tagged with low-battery power-supply
5
questions
0
votes
1
answer
687
views
ON/OFF push button circuit with battery under voltage protection
I have put together the push button circuit explained in TI's SCEA048B application report with an under voltage protection using TI's LMS33460 chip. I ended up with the circuit attached.
The idea is ...
- 229
4
votes
3
answers
2k
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Why isn't my battery charging?
I have a YT7B-BS battery in my motorcycle. My motorcycle doesn't start because the battery voltage is only 12.05 Volts.
The battery has the following inscriptions:
Standard charge: 0.7 A x 5~10 ...
- 481
3
votes
1
answer
938
views
Backup battery enable with microcontroller
I'm interested in making a battery backup circuit that is operated by a microcontrollersuch that when the main battery gets below a certain voltage, the system switches to the backup battery.
...
- 284
0
votes
1
answer
3k
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Confused about battery voltage warning circuit with PNP transistor and Zener diode
Below is a circuit where an LED will light on when the battery voltage (Vcc) is below approximately 8.8V. However, I'm confused as to how it works. My understanding is that when the battery voltage is ...
- 13
7
votes
4
answers
11k
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how to build a low-voltage disconnect switch for DC 12.4V 70A?
How can I make a device that will make the power connected as long as the voltage of the power-supply keeps over 12.4 V (adjustable) and disconnect it if it falls below?
It also must connect the ...
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