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Purpose of Diode on TX for Charging

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Old 02-16-2003, 12:28 PM
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bluefronted
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Default Purpose of Diode on TX for Charging

The diode used on some batteries ( eg. futaba 9ZAP) or on the TX inside , is it purely to prevent reverse polarity when charging.

What would be the negetives if one were to short/bridge this doiode , as I am have problems charging my 9ZAP TX with the Robbe infinity 2 charger , it detects that the battery is fully charged , way too earlt , within 5 minutes
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Old 02-16-2003, 01:30 PM
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Default Purpose of Diode on TX for Charging

Yes, diode is to prevent reverse polarity. Many remove diode, some simply remove battery from TX for charging.

The only negative to removing/shorting diode is losing the reverse polarity protection.

- George
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Old 02-16-2003, 03:54 PM
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srcbarn
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Default Purpose of Diode on TX for Charging

Here's a link that might help if you want to put a jumper across the diode. I've done it to all my transmitters so I can cycle them to check capacity of the packs.

http://www.siriuselectronics.com/ser...iode_jumpering
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Old 02-16-2003, 05:03 PM
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Default Purpose of Diode on TX for Charging

It's not only the reverse polarity protection. The main purpose was to prevent a short circuit or high rate disharge outside the transmitter,which could cause burns or start a fire. Using a fuse ,fusible link ,pollyswitch etc across the diode will protect against those events.
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