The Shop > Electronics & IC Programing
Power Supply / Battery Charger
75Plus:
Several years ago, 1987 to be specific, I designed and built a combination Ni-Cad battery charger and bench power supply. (Ni-Mh batteries were not here yet)
The requirements were that it would be variable in voltage and current. This was so that a wide range of voltage and current capacity batteries could be charged. The voltage ranged from 1.2 to 15 volts and the current was from 20 ma to 1.5 amps.
I wrote it up as a construction project and it was published in "73 Amateur Radio" magazine in Dec. 1987. I am showing the schematic here. If anyone is interested I can furnish additional info.
Joe
Bernd:
Thanks Joe.
That's going to come in mighty handy since I need a charger for 6 volts battries.
Bernd
John Rudd:
--- Quote from: Bernd on January 03, 2010, 05:02:50 PM ---Thanks Joe.
That's going to come in mighty handy since I need a charger for 6 volts battries.
Bernd
--- End quote ---
Bernd...Might I interject..?
what battery chemistry did you have in mind?
Not all batteries are the same, I'm sure you know... :thumbup:
Just tryin' to keep my fellow members alive...
Bernd:
Sure you may interject.
They are sealed batteries. I believe they are lead acid since the note on the side says something about lead.
Let me guess this charger won't work for these batteries, right?
Bernd
75Plus:
Over the past 20 odd years I have used this power supply to charge lead-acid, Ni-Cad, N-Mh, Li-ion and rechargeable Alkaline batteries. I have NOT, nor have I ATTEMPTED to, charge any battery that was not DESIGNED to be recharged.
Joe
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