Author Topic: Anyone keep old EA magazines?  (Read 2467 times)

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Offline AustralianstigTopic starter

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Anyone keep old EA magazines?
« on: July 13, 2016, 10:47:07 am »
Hi there from Queensland, I was simply curious to see if anyone had an archive of EA magazines, particularly the add on regulator for battery chargers article from July '97 as I had one of those that was still running in 2010 from being built in 2002 maintaining the same battery for that time as well.  Both were still fine when I lost possession of the unit they were built in to and I'd like to recreate that sort of success with a higher current mosfet

« Last Edit: July 13, 2016, 11:00:05 am by Australianstig »
 

Offline aargee

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Re: Anyone keep old EA magazines?
« Reply #1 on: July 14, 2016, 07:11:03 am »
I have a copy of the Dick Smith kit instructions here too. Just an extract of the 1997 article Wilfred might be alluding to.
.. and it was an SCR, not a MOSFET,  BTW.

Strangely, Silicon Chip (apparent holders of the EA copyright) don't recommend this circuit be used but point you at a PIC controlled 2008 design. No reason given.
Not easy, not hard, just need to be incentivised.
 
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Offline CJay

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Re: Anyone keep old EA magazines?
« Reply #2 on: July 14, 2016, 07:38:36 am »
I have a copy of the Dick Smith kit instructions here too. Just an extract of the 1997 article Wilfred might be alluding to.
.. and it was an SCR, not a MOSFET,  BTW.

Strangely, Silicon Chip (apparent holders of the EA copyright) don't recommend this circuit be used but point you at a PIC controlled 2008 design. No reason given.

Cynical me suggests that may be because they make a bit of cash from selling the PICs and PCBs?
 

Offline AustralianstigTopic starter

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Re: Anyone keep old EA magazines?
« Reply #3 on: July 14, 2016, 07:48:20 am »
I have a copy of the Dick Smith kit instructions here too. Just an extract of the 1997 article Wilfred might be alluding to.
.. and it was an SCR, not a MOSFET,  BTW.

Strangely, Silicon Chip (apparent holders of the EA copyright) don't recommend this circuit be used but point you at a PIC controlled 2008 design. No reason given.

All I should need to find is an SCR with current handling around the 30A mark for my application.  The last one I built was the '97 version which had no issues at all that I came up with over the 8 years I had it
 

Offline aargee

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Re: Anyone keep old EA magazines?
« Reply #4 on: July 15, 2016, 06:31:49 am »
I still have the original, built into the Arlec charger.

Still working well and charges lead-acid batteries just fine, I like it as you can just connect and forget.
Not easy, not hard, just need to be incentivised.
 

Offline AustralianstigTopic starter

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Re: Anyone keep old EA magazines?
« Reply #5 on: July 15, 2016, 12:01:56 pm »
Can anyone suggest a compatible SCR or SCR MOSFET combo to drive the 25A max continuous load?
 

Offline BradC

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Re: Anyone keep old EA magazines?
« Reply #6 on: July 15, 2016, 12:35:28 pm »
Cynical me suggests that may be because they make a bit of cash from selling the PICs and PCBs?

I still buy the mag when I see it on the news stand, but it has been a number of years since I've bought it because there was actually something in there I particularly wanted. I suspect they are (and have been for some time) teetering on the ragged edge of viability and pushing product like that is just another lifeline revenue stream.
 

Offline AustralianstigTopic starter

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Re: Anyone keep old EA magazines?
« Reply #7 on: August 02, 2016, 04:45:44 am »
How easy is it to parallel SCRs if I'm having hassles getting an appropriately rated one for higher current than 8A?

 


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