RC receiver

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Patrick Mccabe October 13, 2010 at 5:34pm

wow old thread popping up again :)
Ken October 13, 2010 at 5:20pm

Patrick,

"i dont get why most rc receivers have a small voltage rating that are lower than the batteries have."

That is historical / backwards compatibility. Way back when rocks were new and I was roughly your age, R/C gear came with a little battery box that held 4 "AA" cells. "Regular" (carbon zinc or alkaline) cells are 1.5v; rechargeable nicad cells are 1.2v nominal.

4 x 1.5 = 6v
4 x 1.2 = 4.8v

Yeah, then we got NiMH, and LiPo, etc.

Moral of this fable: be careful what standards you create; they may long outlive you. :)
James Pearson October 13, 2010 at 3:56pm

Just going to thrown in another solution I was considering encase my ESC did not put out a safe 5-6 volts. Its also possible to use a 7805 voltage regulator. Or maybe there is a problem with doing this... Any one feel to point out a problem with doing this. Though it sounds as if its not necessary with modern speed controllers already performing this task.
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Thomas J Coyle III July 3, 2009 at 6:40pm

Partick,

RC receivers are designed to work with rechargeable batteries or an ESC/BEC which usually put out 5 to 5.2 volts. Some of the new 2.4GHz receiver can work up to 9 volts. It all depends on the make and model of the receiver. Your 8.4 volt battery will definitely fry an RC receiver designed to work between 5 - 6 volts.

Regards,
TCIII

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RC receiver

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