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Car battery charger

Xikluna

New Member
Can anyone pls supply me with pdf of article for car battery charger found in Electronics Today International, year 1973, month November, page 64. I lost the magazine in question. Thanks
 

crutschow

Well-Known Member
Most Helpful Member
Why do you want to use a circuit that is 45 years old?
I would think there are modern designs that are better.
 

Xikluna

New Member
That car battrry charger has been working ever since without any fault. The circuit is very simple yet highly efficient. I have charged totally dead batteries and i wouldnt change it for another car battery chatger. It is very important for me to find the said article. If i am so unfortunate i would apprrciate if you send ma a good circuit for a car battery charger which i can build cause i need one urgently. Tks for your kind interest.
 

Les Jones

Well-Known Member
If you trace out the schematic of your faulty charger and post it here there is a good chance that we can help you fix the fault.

Les.
 

rjenkinsgb

Active Member
Last edited:

Xikluna

New Member
Tks for all your help and interest.
Tks for tbr circuit also.
The most important issue of my charger is that it uses pulse width modulated voltage to trickle charge the battery when fully charged. A very important feature.
I ll start testing transistors, diodes triac to begin with.. See you guys. Tks
 

crutschow

Well-Known Member
Most Helpful Member
Here's an efficient PWM switcher battery charging circuit that may be of interest to you.
 

Xikluna

New Member
A very good charging circuit although a little bit complicated. Tks for your help. I'll take a good look at it. Tks
 

crutschow

Well-Known Member
Most Helpful Member
A very good charging circuit although a little bit complicated.
Perhaps, but I doubt you will find anything significantly simpler that does a 3-step lead-acid battery charge using PWM.
 

Xikluna

New Member
You are right. Problem is i need one now. That's why i'm trying to fix mine. Or else i have to buy one. Maybe if i find the appropriate circuit i'll build another one. At the moment i'm trying to service mine without a schematic. Thanks for everything.
 

Xikluna

New Member
Quite difficult because the cct is not built on pcb. At the moment i'm checking components and voltages. Tks
 

crutschow

Well-Known Member
Most Helpful Member

Xikluna

New Member
It is electronics today international, magazine. Unfortunately i need November 1973 edition, which is missing from the list.
Tks just the same. I appreciate.
 

shokjok

Member
Electronics Today International was a Canadian hobbyist publication, and won't be on that list. I had those issues from December 1979 to March 1985, gone since October 2015. None of my issues had PWM circuits in them, just simple elementary circuits.
 

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