How to build a Charger and Equalizer
#2
Tech Adept
I suppose you'll get someone to manufacture a PCB (printed circuit board) for you? If so, its not that compicated... Texas Instruments has a chip that will do it...
I had it in a magazine, let me see if I can dig it up...
I had it in a magazine, let me see if I can dig it up...
#3
Buying a used charger is way cheaper than building one from scratch. You get a quality checked charger in a nice case. It will save you from a lot of headaches and sleepless night drawing and re-drawing PCB traces.
When you've found a suitable diagram, try looking at the Bill of Materials for everything, from the smallest diodes, to the chassis. Then browse through your local buy and sell forum, compare prices and you'll see what I mean.
The discharge is more suitable/economical as a DIY project though.
PS
You can sell a used commercial charger if ever you decide to upgrade/quit/whatever. A DIY charger will be harder to sell
When you've found a suitable diagram, try looking at the Bill of Materials for everything, from the smallest diodes, to the chassis. Then browse through your local buy and sell forum, compare prices and you'll see what I mean.
The discharge is more suitable/economical as a DIY project though.
PS
You can sell a used commercial charger if ever you decide to upgrade/quit/whatever. A DIY charger will be harder to sell
#4
Tech Elite
iTrader: (6)
Ahhh yes, but building stuff is more fun. Both TI and Maxim make peak detection circuits. You will also need a basic feedback circuit to do the constant current part of the charger and the discharger. This page has useful stuff
http://www.uoguelph.ca/~antoon/gadgets/gadgets.htm
and this one
http://www.uoguelph.ca/~antoon/circ/circuits.htm
http://www.uoguelph.ca/~antoon/gadgets/gadgets.htm
and this one
http://www.uoguelph.ca/~antoon/circ/circuits.htm
#5
Tech Fanatic
iTrader: (3)
Most of us on here don't have the ability to access complicated test equipment to build or test these designs so they will work correctly. What we all want is the circuit for a Novak Smart tray that we can build for $200 and have the pride to say we built it ouselves with no help. Might look like shit BUT I made it. I think that is the basis for the original question.
I have a design for a battery equaliser BUT it uses diodes to cutoff voltage at around about 0.6v. This will kill IB cells and is not very accurate for GP's.
Any one have something better???
I have a design for a battery equaliser BUT it uses diodes to cutoff voltage at around about 0.6v. This will kill IB cells and is not very accurate for GP's.
Any one have something better???