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 Automatic battery swappers
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TinMan
Advanced Member


4082 Posts

Posted - December 07 2011 :  20:29:41  Show Profile Send TinMan a Private Message  Reply with Quote
this setup will softly switch the charge from the primary charge battery to a second charge battery once the primary charge battery gets close to a voltage you set by the second pot


Remember-when you make a mistake you have just learned how not to do it.This only brings you one step closser to success.The only way to fail is to never try

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iaec
Forum Admin



1033 Posts

Posted - December 07 2011 :  20:46:31  Show Profile Send iaec a Private Message  Reply with Quote
This looks simple and very clear to follow, i like it already :)
So many things to try out so little time to do them :(

TimberJack

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Poppy
Average Member



USA
418 Posts

Posted - December 25 2011 :  10:11:14  Show Profile Send Poppy a Private Message  Reply with Quote
Hi Tinman...

Great circuit! Do you know what the voltages would be if 5k pots were used?

~~~Life's greatest FAILURE is not learning for our MISTAKES!~~~

Good Experimenting...
Poppy
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olddawgsrule
Advanced Member



USA
1434 Posts

Posted - January 02 2012 :  14:10:31  Show Profile  Visit olddawgsrule's Homepage Send olddawgsrule a Private Message  Reply with Quote
I hope to build the original battery swapper next, but I'm having a problem coming up with a few of the parts.

Hoping you folks can suggest a source or replacement for these.

100nf 63v polyester cap (found 50v not 63v)
TL7705AP Supply Voltage Suppressor (TI so I've learned and problem getting)
47K sub-miniature preset potentiometer (found a 50K, is it okay?)
Farnell 186454 MY412DCS Relay

All the other parts are on order from EBAY.

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ron_o
Moderator



United Kingdom
1052 Posts

Posted - January 02 2012 :  14:19:24  Show Profile Send ron_o a Private Message  Reply with Quote
Hi Olddawgsrule

Nice to see you made it here

The cap will be fine at 50 volts, and so will the 50Kohm preset

Both the relay and Voltage supply supervisor are available from either RS Components or Farnell ( i purchased both items from RS Components , here in the UK )

ron
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TinMan
Advanced Member



4082 Posts

Posted - January 02 2012 :  17:23:19  Show Profile Send TinMan a Private Message  Reply with Quote
Hi Poppy-no im not sure about the voltage-i would think around 22 volts with full 5k,but thats just a guess.

Remember-when you make a mistake you have just learned how not to do it.This only brings you one step closser to success.The only way to fail is to never try>>>>TinMan<<<<
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olddawgsrule
Advanced Member



USA
1434 Posts

Posted - January 03 2012 :  12:44:05  Show Profile  Visit olddawgsrule's Homepage Send olddawgsrule a Private Message  Reply with Quote
Found this relay at my favorite supply store.
Will it replace the Farnell?


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mnasim31
New Member



Pakistan
4 Posts

Posted - January 23 2013 :  03:48:53  Show Profile Send mnasim31 a Private Message  Reply with Quote
Hi Olddawgsrule, in Jan last year(exactly a year back) you were planning to make a bat swapper & collecting parts. would you like to please tell about your experience on this bat swapper which in fact thedaftman said fully automatic & can swap between run and charge batteries of the main bedini circuit. Thanks
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ron_o
Moderator



United Kingdom
1052 Posts

Posted - January 24 2013 :  18:52:00  Show Profile Send ron_o a Private Message  Reply with Quote
The relay in the Daftmans circuit is a 4 pole 2 way type , the type shown in the photograph is a 2 pole 2 way type so the answer is no it cannot be used in the original Daftman circuit.

The 4 pole relay completely isolates both positive and negative poles of the batteries for "complete" safety when switching, fewer poles can be used BUT the risk of shorting out the battery increases.

ron
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guruji
New Member



Malta
2 Posts

Posted - February 10 2013 :  03:11:09  Show Profile Send guruji a Private Message  Reply with Quote
Hi guys can someone post this schematic in electronic diagrams please?
Does anyone tried this if this works?
Thanks

Edited by - guruji on February 10 2013 03:12:00
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