Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
This article, talks about smart batteries as devices having 4 or 5 terminals.
The text suggests that most smart batteries have at least 4 wires:
"For safety reasons, most battery manufacturers also run a separate wire for temperature sensing."
It would appear that smart batteries with just...
About using an old mobile phone as an universal Li-Ion battery charger
I have an old Siemens mobile phone that uses a 700 mAh, 3.7V battery like this:
https://www.amazon.co.uk/Li-Ion-battery-suitable-Siemens-Gigaset/dp/B00BU24ETU (see also the attached picture)
I also have an unused new 670...
I have found a review about a battery charger and power analyzer for NiMH and NiCd batteries that seems interesting. The device is a bit expensive (over 50 dollars) but it can measure the real capacity of any AAA or AA cell. I believe it can be useful to people having a lot of batteries, of...
Fully charged, my new "PERSONNELLE" brand batteries have a short circuit current between 3.5 and 3.8 A while the voltage with no load is 1.37 - 1.38 V.
The old ENERGIZER cells generate roughly the same short circuit current (~ 3.9 A) and also the voltage across them is the same, 1.37 - 1.38 V...
I can not unsubscribe from edaboard threads that send me emails
I keep receiving emails like this:
I have visited the addresses mentioned in the emails and deleted subscriptions, however after replying to the topic I start receiving the emails again.
I would like to unsubscribe from some...
No, without a load.
In the past, using two AA 1.2V "ENERGIZER" batteries, I was able to take at least 100 pictures, each time also firing the flash.
My old batteries, 3 years plus, can still power the camera for a time longer than 10 minutes. They are still superior to my new batteries which...
It is the author John Bermont the one who says the converted 220 - 110 V looks like a rectified half sine, not me. I have doubted this from the beginning.
The output of the converter should have a positive and negative part like in this schematic (see: https://kakopa.com/PSA220-110/index.html)...
The main idea is that the output of a 220 -> 110 V voltage converter can not be a rectified half sine simply because there are various electric devices (appliances) that use AC electric motors and they will not work with a voltage having such a profile.
The output of the converter must have...
I have done more tests and I finally separated two batteries out of the group of four, those two that do not discharge to below 100 mV while powering the flash-lamp. I charged and installed them in my camera which unfortunately works for no more than 10 minutes with them.
After being discharged...
Yes but the same voltage looking like a 220 V sinus with the lower (negative) part lost has to be able to power a 110 AC motor and this will not happen.
My charger is not timer based. It stops charging different batteries in various intervals of time.
Anyway, I have continued my experiments and charged all four new batteries and put them in a flashlight which I left switched on till the light produced by its LEDs died out.
At this stage I...
I also have a problem related to NiMH batteries and a charger. I will post my question here because I do not want to open another topic.
I have bought 4 AA NiMH batteries recently, 2-3 weeks ago.
A few days ago I charged two of them because they did not work in my camera out of the box...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
