Great Planes new DC charger/cycler  
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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> Great Planes new DC charger/cycler
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Great Planes new DC charger/cycler - 11/22/2002 8:48:56 PM   
Red Scholefield



Posts: 4980
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline 		Yes, it will charge up to 4 Li-Poly/ Li-Ion cells in series.

See specs at

http://www.electrifly.com/accys/gpmm3150.html

Instruction manual available at

http://www.electrifly.com/manuals/gpmm3150-manual.pdf

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Red S.
AMA 951 Leader Member

(in reply to Scorch)
       Post #: 51

Great Planes new DC charger/cycler - 11/22/2002 10:56:08 PM   
localbuyer


 

Posts: 233
Joined: 11/30/2001
From: Laurel, MD, USA
Status: online 		Question for the lucky owners:

Do you need to jump the diode before you can charge the Futaba transmitter using this charger?


Thanks

(in reply to Scorch)
       Post #: 52

Great Planes new DC charger/cycler - 11/22/2002 11:41:23 PM   
Red Scholefield



Posts: 4980
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline 		The Trinity will charge with a diode in the circuit, but you cannot cycle the pack without a) bypassing the diode or 2) removing the pack and connecting directly to it.

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Red S.
AMA 951 Leader Member

(in reply to Scorch)
       Post #: 53

Great Planes new DC charger/cycler - 11/23/2002 1:13:17 AM   
cmassa



Posts: 162
Joined: 1/8/2002
From: Chico, CA, USA
Status: offline 		According to the FAQ at Futaba's website, the 9C can be discharged through the charge circuit.

http://www.futabarc.com/faq/faq-9c-q597.html

Chris


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Chris Massa
Butte R/C Club

(in reply to Scorch)
       Post #: 54

Great Planes new DC charger/cycler - 11/23/2002 4:31:39 AM   
CO-Zman


 

Posts: 35
Joined: 5/14/2002
From: Denver, CO, USA
Status: offline 		Yes, my understanding a unique change to the 9C...nice touch to keep people from jumpering the diodes.

Rob

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>>Ya think???<< Yea, but the more I do, the more trouble I get into.

(in reply to Scorch)
       Post #: 55

Please help! - 11/24/2002 10:37:35 PM   
On Edge



Posts: 75
Joined: 7/17/2002
From: Auburn, CA, USA
Status: offline 		Can someone please help us novices here with battery specs?

It would be really nice if someone put all the specs. in one place, clear and concise for us battery/charging novices.

I'm looking for charge & discharge rates for fast charging and slow charging NiCd & NiMh battery packs. I just bought the Triton charger and really need some help. I'm sure others do as well. Would one of you battery geniuses please help us out?

Many thanks!
Jeff

(in reply to Scorch)
       Post #: 56

Great Planes new DC charger/cycler - 11/24/2002 10:45:28 PM   
Red Scholefield



Posts: 4980
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline 		Ni-Cd should be charged no faster than 4C - some will not take that much. Ni-MH no higher than 2C (although some charge faster than that). Unless you are really in a hurry you will get longer life out of the packs by charging at lower rates. Slow charge rate for both Ni-Cd and Ni-MH is as close as you can get to C/10. Discharge rates (to check to see if they make factory spec. capacity is C/5.

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Red S.
AMA 951 Leader Member

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       Post #: 57

Great Planes new DC charger/cycler - 11/24/2002 11:47:58 PM   
flatfour



Posts: 597
Joined: 12/29/2001
From: Midlothian, IL, USA
Status: offline 		Red , is there any issue using a peak detect charger at C/10 rates? I usually charge my 1650 NiMh packs at 200 or 300 ma


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Jim in Chicagoland

(in reply to Scorch)
       Post #: 58

Great Planes new DC charger/cycler - 11/25/2002 12:04:57 AM   
Red Scholefield



Posts: 4980
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline 		Not that I have encountered using SuperNova, Robbe Infinity 2, SuperTurbo or Alpha 4. Looking at Trinity now.

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Red S.
AMA 951 Leader Member

(in reply to Scorch)
       Post #: 59

Great Planes new DC charger/cycler - 11/25/2002 12:28:34 AM   
On Edge



Posts: 75
Joined: 7/17/2002
From: Auburn, CA, USA
Status: offline 		Hi redscho,
Thanks for the info! What about the very first charge on a NiMh pack? 50ma?

Jeff

(in reply to Scorch)
       Post #: 60

Great Planes new DC charger/cycler - 11/25/2002 12:29:55 AM   
Red Scholefield



Posts: 4980
Joined: 12/8/2001
From: Newberry, FL, USA
Status: offline 		C/10 is recommended or as close as you can get to it.

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Red S.
AMA 951 Leader Member

(in reply to Scorch)
       Post #: 61

Great Planes new DC charger/cycler - 11/26/2002 3:09:44 AM   
szastoupil


 

Posts: 3
Joined: 11/26/2002
From: Waupaca, WI
Status: offline 		[QUOTE]Originally posted by Scorch
1.5 inch diameter ferrite FT140-43 toroid core

Please help me locate these items. [/QUOTE]


This toroid is used for extra measure. You can purchase one from [URL=http://www.amidon-inductive.com/associates_prod_toroidal.htm]Amidon Associates[/URL] . The "140" is the outer diameter of the toroid, which is a requirement base on your wire size and the number of turns needed. And the "43" is the mix of the powdered iron core, which correlates to the the frequency cutoff of the core itself. Basically it is a low pass filter. I am not sure what the frequency range of the 43 is off hand. If you have access to an ARRL Handbook, the appendix has the broad frequency ranges for each color of core. Keep your eyes peeled at the next hamfest that you attend a Yellow or Red core. The core added in the QST article is to attenuate the high frequency radiated emissions from the switching power supply so they don't end up as "birdies" in the ham radio. For the charger application, it probably isn't necessary, but I am not advocating unintentional radiators either. In this case you aren't worried about "birdies" in your battery charger. In the professional design world, we would worry about the emission levels affecting the receiver and affecting the battery charger micro controller. I hope this is enough info.


Scott
ARS KB0KFX

(in reply to Scorch)
       Post #: 62

Great Planes new DC charger/cycler - 11/26/2002 8:48:00 AM   
cmassa



Posts: 162
Joined: 1/8/2002
From: Chico, CA, USA
Status: offline 		Huh???


[QUOTE]Originally posted by szastoupil



This toroid is used for extra measure. You can purchase one from [URL=http://www.amidon-inductive.com/associates_prod_toroidal.htm]Amidon Associates[/URL] . The "140" is the outer diameter of the toroid, which is a requirement base on your wire size and the number of turns needed. And the "43" is the mix of the powdered iron core, which correlates to the the frequency cutoff of the core itself. Basically it is a low pass filter. I am not sure what the frequency range of the 43 is off hand. If you have access to an ARRL Handbook, the appendix has the broad frequency ranges for each color of core. Keep your eyes peeled at the next hamfest that you attend a Yellow or Red core. The core added in the QST article is to attenuate the high frequency radiated emissions from the switching power supply so they don't end up as "birdies" in the ham radio. For the charger application, it probably isn't necessary, but I am not advocating unintentional radiators either. In this case you aren't worried about "birdies" in your battery charger. In the professional design world, we would worry about the emission levels affecting the receiver and affecting the battery charger micro controller. I hope this is enough info.


Scott
ARS KB0KFX [/QUOTE]


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Chris Massa
Butte R/C Club

(in reply to Scorch)
       Post #: 63

Great Planes new DC charger/cycler - 11/26/2002 8:50:53 AM   
cmassa



Posts: 162
Joined: 1/8/2002
From: Chico, CA, USA
Status: offline 		Sorry, too technical for me.

Chris


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Chris Massa
Butte R/C Club

(in reply to Scorch)
       Post #: 64