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Results tagged with batteries
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user 97978
An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Connected a battery's negative to another's positive is a way to increase voltage, useful when a battery outputs low voltage.
3
votes
1
answer
789
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What is a good way of estimating how long a battery will last for powering up a microcontroller
I know this is going to be a broad question, but I'm looking for a broad answer that can get me a ballpark figure. When building a board with microcontroller, what's a good way to estimate how long a …
- 506
3
votes
1
answer
887
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Proper way of designing a battery backup system with 12V/5V dual output AC power supply?
I'd like to add a rechargebale battery backup system to this, with 6-pack AA rechargeable batteries attached so that the power is kept on even if the AC power goes away, but since the AC power supply has … The batteries should recharge slowly if PSU is on given that a small current flows into R1 to batteries. …
- 506
0
votes
2
answers
386
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Good method to provide small additional voltage while on battery?
The problem is I'm using 6 x AA rechargeable batteries, giving about 7.2 voltage. This voltage is insufficient to drive the solenoid lock. …
- 506
1
vote
3
answers
920
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A good way of providing 9V/5V voltage with batteries when current draw is relatively high?
I have a project (doorlock) with MCU / LCD / Keypad and solenoid (lock) connected together. MCU, LCD and Keypad runs at 5V while solenoid runs at 9V.
I'd like to provide the power with a battery, so …
- 506