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Message History

How to charge 3S1P LFP batteries?
Hello, I am observing the way to charge 3 series 3.2V LFP batteries.
I didn't find on the market suitable and affordable (below 10 USD) chargers, so I am wondering, is it possible (practical) appraoach to charge 3cells with three CN3058 separately?

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Electronics and PIC Programming Assembler Update
Hi

* Going to look on old laptop for MPLAB 8.94 directory

Has programs and templates we did awhile ago

If no it's no big whoop de doo

Have a good week

Bob

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Merit A-2900 universal audio output transformer
Merit A-2900 universal audio output transformer
Instructions for this on the web are all same.
See attachments.
The three listed part numbers are just different wattage same wiring.
The primary is three wires with center-tap. The secondary has 6 taps.
How does it change the primary impedance as in the chart
very unusual secondary impedance cho...

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Samsung C21RJAN ceramic hob BUZZER got quieter
I noticed recently that buzzer that gives signal when touch buttons are pressed on my Samsung C21RJAN ceramic hob are quieter than before, maybe 40-50%.

Is the buzzer faulty or voltages lower, or else?

Here is the boa...

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Best way to check charge and discharge many mixed batteries?
Hi, for a university project I have about 500 waste batteries (Li-ion vape cells, AA/AAA, NiMH, coin cells).


What’s the best simple way to estimate how much charge is left in each? What’s the best and fastest safe way to fully discharge them?
I only have a multimeter right now. Thanks!

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