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Old Jun 13, 2016, 10:37 AM
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Redundant power supply for the receiver

has anyone ever experimenting doing the following wiring?

basically instead of cutting off the red bec wire on the esc, put a diode in there that will make the power from the ESC to the receiver ONE WAY.

that way the external bec would not feed the esc in anyhow and in case the bec fails, the esc can provide power to the receiver.

let me know your thoughts!

thanks
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Old Jun 13, 2016, 01:21 PM
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I use esc bec + a little nimh like yge instruction.
If esc fail there is 120 Mah of nimh...

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Old Jun 13, 2016, 01:28 PM
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Yea good idea. But most nimh are big and heavy.
U got a favorite one?
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Old Jun 13, 2016, 02:24 PM
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Little pack ..8gr

Inviato dal mio SM-G900F utilizzando Tapatalk
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Old Jun 13, 2016, 02:45 PM
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This one is clever. Charges it's own 2S li-po while the normal BEC is working. If the BEC or the power pack fails it till feed the Rx AND let you know via the LED.

Very common in by the helicopter guys where you put high loads on the drive train too.

OPTIPOWER ULTRA GUARD 430 - Working demo (1 min 31 sec)
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Old Jun 19, 2016, 08:56 PM
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Quote:
Originally Posted by xzatx View Post
has anyone ever experimenting doing the following wiring?

basically instead of cutting off the red bec wire on the esc, put a diode in there that will make the power from the ESC to the receiver ONE WAY.

that way the external bec would not feed the esc in anyhow and in case the bec fails, the esc can provide power to the receiver.

let me know your thoughts!

thanks
I've been doing that for years on my three giant scale models.

Take a look:

Giant Scale Power System:
Battery Backup System
http://www.wattflyer.com/forums/showthread.php?t=63794

Dual ESC Shottky Diode Isolation
http://www.wattflyer.com/forums/showthread.php?t=67094

Digikey Schottky Diode
http://www.digikey.com/product-detai...5CT-ND/2179164
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