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HomeAircraftHelicopterMain Discussion › Does the X9303 have a diode on the battery line?
03-07-2008 01:25 AM  10 years agoPost 1
QuantumPSI

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Atlanta, GA

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subject says it all

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 01:55 AM  10 years agoPost 2
Dood

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Wescanson

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one way to find out,
take your apart and look at it

  ▲
▲ ▲

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03-07-2008 02:17 AM  10 years agoPost 3
David Blain

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Mt. Dora, Florida (USA)

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YES---- IT DOES!
Be careful on the charging rate that you attempt to charge at! I was told the "max" charge rate is 1MAH (I could stand corrected) but Call JR or PM Mac-Man and get the correct rating for the charging!
I DO know that if you exceed the charging rate that you can burn the diode out and then your returning it to JR for repair....
Just my input, but take the time and check with JR!

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03-07-2008 02:29 AM  10 years agoPost 4
AirWolfRC

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42½ N, 83½ W

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? - ? - ? - ?
If there is a diode in the TX (most likely) then the charging rate is efectively ZERO. You CAN'T burn out the diode.

The diode needs to be bypassed to enable charging in the TX.

For other transmiters, see the diode sheets at Sirius Electronics,
http://www.siriuselectronics.com/in...age=diode_sheet

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03-07-2008 02:33 AM  10 years agoPost 5
JRjoe

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Jonesville , IN USA #1

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Bottom line. Thats why i always charge my batteries out of the transmitter....


JRjoe.....
Indoor plumbing??? No, we don't need that!!!

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03-07-2008 02:47 AM  10 years agoPost 6
QuantumPSI

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Atlanta, GA

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If I were to disassemble my X9303, how would I know if there is a diode. Where do I look and what exactly am I looking for?

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 02:51 AM  10 years agoPost 7
alvinrc

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Mobile, AL, USA

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I thought that there were glass fuses in JR transmitters.

They are in my older JRs.

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03-07-2008 02:53 AM  10 years agoPost 8
AirWolfRC

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Diodes and fuses are two different things and do different jobs.

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03-07-2008 03:51 AM  10 years agoPost 9
irocu88

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norfolk,va

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My X9303 has a glass bus fuse inside.

Caliber 90 FT os91 c-spec
Caliber 50, OS50 hyper
Caliber 30 OS37

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03-07-2008 03:57 AM  10 years agoPost 10
QuantumPSI

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Atlanta, GA

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As a matter of fact, I'm just going to put this on the charger and see if I can charge and discharge. I'll report back in a few...

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 04:04 AM  10 years agoPost 11
QuantumPSI

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Atlanta, GA

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Using my triton, I was able to charge and discharge at 1A without problem. I don't think there is a diode in it (I don't think my XP9303 had one either). In any case, I'm about to cycle my Tx so I enjoy the wonders of SS.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 03:06 PM  10 years agoPost 12
bjacks

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Ft. Worth, Tex.

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9303
I don't think it has a diode, I can charge and discharge mine and I don't think you can do that if it had a diode. Bobby

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03-07-2008 03:13 PM  10 years agoPost 13
cessna151

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Missouri... Originally Indiana

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I too charge and discharge through my 9303 regularly at 1.5A with no mods. I've upgraded the battery to a 2700mah.

--Eagles may soar high, but weasels don't get sucked into jet engines!--

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03-07-2008 05:22 PM  10 years agoPost 14
JKos

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Redondo Beach, CA

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There is no diode in the X9303 battery circuit. Yes, there is a classic glass tube type fuse.

- John

RR rules!

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03-07-2008 10:16 PM  10 years agoPost 15
Way2slow

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Jeffersonville Ga

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Not sure in what respect you are refering to having a diode on the battery line and have never been into a JR radio but I'm willing to bet you there is a diode. I've only seen very few electronic devices that did not provide reverse voltage protection when there was a possibility of the user connect/plugging a power source in backwards. This protection is usually a diode. Granted, they have a fuse for over current protection but they usually have a diode for reverse voltage protection.

As for charging and discharging, they could have the diode so its not in the circuit during discharge. Bias a diode into saturation and it will pass AC as long as the AC peak signal is less than the bias voltage

I deleted one dumbass statement after reading what it said, if you see the last paragraph changed.

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03-07-2008 10:32 PM  10 years agoPost 16
psych-lick

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Portland, OR

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It's called a 'poly-switch'.
http://en.wikipedia.org/wiki/Polyswitch

-Jeff T.

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HomeAircraftHelicopterMain Discussion › Does the X9303 have a diode on the battery line?
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