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Post by lyle on Feb 2, 2007 11:26:07 GMT -5
Does your R/C transmitter have a charging circuit diode?
If so, that diode prevents you from cycling or checking or doing just about anything good for your batteries, without removing them. Here is where to find out how to solder in a jumper wire to bypass that pesky diode, so you can take better care of your batteries:
Go to www.siriuselectronics.com then click on "diode sheets"
You will find easy to follow instructions, with pictures.........it's so easy, even Ron Hayward can do it!!
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Ron H
Full Pilot
Posts: 32
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Post by Ron H on Feb 2, 2007 20:16:27 GMT -5
Some manufactures use the center post on the charging jack for positive (Futaba for example) and some use it for the negative (JR & Spektrum for example). A diode is like a check valve - it allows DC current to flow one way but not the other. Basicly, the diode is in the charging circuit of a Tx to prevent damage to battery & whatever. If you connect the wrong charger to the Tx - ie, connect a Spektrum charger to a Futaba Tx. The diode also prevents you from checking the battery with an expanded volt meter and prevents you from cycling the battery unless you remove it from the Tx. If you have ALL the same brand of radio gear, then it's not a bad idea to jump the diode. If you have different brands, ie, Futaba, JR, Airtronics, etc., I would NOT recommend doing it. The reason Sirius recommends 36 ga. wire is that it will act as a fuse - it you do hook up a non-compatible charger to your Tx (plus to minus & minus to plus - creating a short), the 36 ga. wire will melt in to before any damage can occur. I have jumped all (14) of my Futaba Tx's with servo lead size wire and have never had any problem. Ron H.
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