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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
 Posted - Jul 31 2008 : 05:24:47 AM
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quote:
Originally posted by Aaron Cake
Modifying the circuit for 24V is simply a matter of using the appropriate transformer and calculating the voltage divider to switch the SCR at the appropriate point (R1, R2, R3).
How do I do these calculations? Please help me. Dennis
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Jul 31 2008 : 11:14:09 AM
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| Actualy looking at this circuit I think the battery will only discharge through resistrors R1, R2,and R3 becuase even when the triac alows power to flow back, it wont go beyond diode D1. That leaves the voltage devider alone connected to the battery for the purpose of sensing the the voltage levels. I strongly believe the dischrge current is very low and negligable. Thanks Dennis |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Aug 01 2008 : 09:24:28 AM
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| Ohms law and the formula for a voltage divider. |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Aug 01 2008 : 09:51:26 AM
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| I have no idea on Ohms law could you please help me a little. Thanks |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Aug 01 2008 : 10:42:10 AM
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Ohm's Law has the most basic rules for electrical circuits.
The rules define voltage, current, resistance and power.
Look in Google for many links that explain Ohm's Law. |
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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
Posted - Aug 03 2008 : 04:05:56 AM
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quote:
Originally posted by Aaron Cake
Ohms law and the formula for a voltage divider.
Hello Mr. Administrator...
Can your Battery charger (automatic) can be modify to charge huge batteries (approx. 150AH- 200AH).
Thank you |
juan dela cruz
Penniless INVENTOR |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Aug 05 2008 : 02:46:33 AM
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| Yes it can cause I modified it to give out up to 100Amps by paralleling 7 BT139 Triacs and they work fine. Dennis |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Aug 05 2008 : 02:48:03 AM
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quote:
Originally posted by audioguru
Ohm's Law has the most basic rules for electrical circuits.
The rules define voltage, current, resistance and power.
Look in Google for many links that explain Ohm's Law.
Please some body help me do the Ohms law math if the moderator cant. Thanks |
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pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Aug 05 2008 : 04:21:00 AM
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Knowing Ohm's Law and being able to apply it is a basic essential to working in electronics.
You really should make an effort to understand it - it's not difficult. You cannot expect to go through life being spoon-fed. |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Aug 06 2008 : 06:00:46 AM
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| Ok but will ask for help if I get stuck and you help me? Thanks |
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pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Aug 06 2008 : 08:31:09 AM
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quote:
Originally posted by kivdenn
Ok but will ask for help if I get stuck and you help me? Thanks
Yes, of course. |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Aug 12 2008 : 11:49:41 AM
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I have made some sreaserch and I have discovered that Current= Volatge/Resitence and that this formular can be manipulated to get any un known. But I have failed to apply this formular to this charger circiut so that I can get values to R1,R2,R3 for 24V battery bank.
Also how does this charger discharge the battery when disconnected from the mains? |
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8888
New Member
USA
3 Posts |
Posted - Aug 25 2008 : 12:54:55 AM
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| what can i use for Q1 and Q2 |
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8888
New Member
USA
3 Posts |
Posted - Aug 25 2008 : 12:56:23 AM
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| where did you get you parts |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Aug 30 2008 : 10:45:49 AM
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| Try the local electronics store. Failing that, DigiKey. |
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Topic |
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Automatic 12V Lead Battery Charger
