Great Planes new DC charger/cycler
11-22-2002, 03:48 PM
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Great Planes new DC charger/cycler
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
See specs at
http://www.electrifly.com/accys/gpmm3150.html
Instruction manual available at
http://www.electrifly.com/manuals/gpmm3150-manual.pdf
11-22-2002, 05:56 PM
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Great Planes new DC charger/cycler
Question for the lucky owners:
Do you need to jump the diode before you can charge the Futaba transmitter using this charger?
Thanks
Do you need to jump the diode before you can charge the Futaba transmitter using this charger?
Thanks
11-22-2002, 06:41 PM
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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.
11-22-2002, 08:13 PM
#54
Great Planes new DC charger/cycler
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
http://www.futabarc.com/faq/faq-9c-q597.html
Chris
11-24-2002, 05:37 PM
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Please help!
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
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
11-24-2002, 05:45 PM
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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.
11-24-2002, 06:47 PM
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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
11-25-2002, 10:09 PM
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Great Planes new DC charger/cycler
Originally posted by Scorch
1.5 inch diameter ferrite FT140-43 toroid core
Please help me locate these items.
1.5 inch diameter ferrite FT140-43 toroid core
Please help me locate these items.
This toroid is used for extra measure. You can purchase one from Amidon Associates . 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
11-26-2002, 03:48 AM
#63
Great Planes new DC charger/cycler
Huh???
Originally posted by szastoupil
This toroid is used for extra measure. You can purchase one from Amidon Associates . 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
This toroid is used for extra measure. You can purchase one from Amidon Associates . 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
11-26-2002, 02:12 PM
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Great Planes new DC charger/cycler
Originally posted by Chris Massa
Sorry, too technical for me.
Chris
Sorry, too technical for me.
Chris
That post was in regards to Scorch's difficulty to locate the FT140-43 toroid part to modify a computer power supply to use with the charger. The toroid is a powered iron doughnut about 1.4" round that is wrapped with the +12V wire. This is used to get rid of the radio noise/interference that is emitted from the power supply. You can see a similar application by looking at some computer monitor cords that have a little cylinder shape built into the cord. This is basically the same thing to help filter out the "radio garbage". Thats all. I hope that sheds a little light.
Scott
11-26-2002, 04:44 PM
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Great Planes new DC charger/cycler
Yes, very true. I originally read an article on converting a PC power supply to provide a 12v DC source for my mobile ham rig. I am now building the supply so I can use it for that and to run the Triton on the bench. I have all the parts, except the core, and will be doing the project over Thanksgiving. So far, the project is in the range of $30
It's fun, and it's cheaper than a high current PS from a retail source. And yes, pictures will follow.
It's fun, and it's cheaper than a high current PS from a retail source. And yes, pictures will follow.
12-03-2002, 12:21 AM
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PC Power Supply
http://www.snowcrest.net/cougar/atx/MVC-896F.JPG
I just finished this. and its at 12.6 volts. Also with a
10W 7 ohm resister. , So now I am wondering if I should
put the second one in line? so how do a do that? your do I need to?> http://www.snowcrest.net/cougar/atx/MVC-895F.JPG
oh here's the rest of the pics. took me about 2 hours. New ATX 300W
http://www.snowcrest.net/cougar/atx/
Thanks For ALL the help Guys!
Sheesh I was going to buy a Sirus but now maybe a triton..
Jeff
I just finished this. and its at 12.6 volts. Also with a
10W 7 ohm resister. , So now I am wondering if I should
put the second one in line? so how do a do that? your do I need to?> http://www.snowcrest.net/cougar/atx/MVC-895F.JPG
oh here's the rest of the pics. took me about 2 hours. New ATX 300W
http://www.snowcrest.net/cougar/atx/
Thanks For ALL the help Guys!
Sheesh I was going to buy a Sirus but now maybe a triton..
Jeff
12-03-2002, 12:33 AM
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Great Planes new DC charger/cycler
Originally posted by Foxtrot_019
OK so we know all the great things about the charger, so what isn't so great about it (besides the power supply)
-Foxtrot
OK so we know all the great things about the charger, so what isn't so great about it (besides the power supply)
-Foxtrot
It seems to work fine on standard rx packs. When I tried to charge my 8U tx, it just did not seem to charge the pack very well at all. Sorry for the lack of technical detail, I seem to be forever the novice.
I also tried to charge a plain 6 cell 1200 Mah car pack. In auto mode, it did not appear to detect that it was a six cell pack. During charge, it was putting out about 900mah, or so at about 4.87v. I was running it off my spiffy new ATX PC PS. So, "power" should not have been a problem. Earlier in this thread, there is a link to the instructions in pbf format for those that care to put their $0.02 in. I'm OK as long as I can use auto mode, but I am gun-shy of trying to dial it in manually, yet.
What has y'alls experience been so far?
12-03-2002, 12:46 AM
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This is a shot of my finished ATX PC PS. Total cost, about $50 Half of that was the PS itself. I simply could not source one local/free. I had no choice but to buy it 
This is the input/output from the PS This does not appear to chage, so I guess it works. Sorry, it's blurry.
This is the input/output from the PS This does not appear to chage, so I guess it works. Sorry, it's blurry.
12-03-2002, 12:52 AM
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Scorch
What watts power supply did you use to start with?
and did you do the TWO resisters? I am wondering
if I need to add one more and a pic on how to.
Thanks
Jeff
and did you do the TWO resisters? I am wondering
if I need to add one more and a pic on how to.
Thanks
Jeff
12-03-2002, 12:54 AM
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Scorch
And another Q's why the triton and not the sirus?
just wondering before I buy a charger.. Seems that
the Triton does the discharge as well? and the other
doesnt?
thanks agian
Jeff
just wondering before I buy a charger.. Seems that
the Triton does the discharge as well? and the other
doesnt?
thanks agian
Jeff
12-03-2002, 12:55 AM
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This is another photo of the PS itself. I thought it turned out pretty good. I used cigarette lighter connectors for power. That's what's on top, a female connector. I replaced the clips on the Triton with a male cigarette lighter plug.