Most of the ESC's have a regulator built into them. They also have a cutout
circuit that allows the receiver and servos to operate with the motor shut
off do to low voltage.
No need to reinvent the wheel on a slow stick.
Hi There
I am about to get my first electric plane - probably a slow stick type plane.
However, I can't
figger out how to arrange the batteries -
eg if the plane uses (say) 7 cells to run the motor then that gives 8.4 volts -
but that seems
too high for the receiver and servos. Or is it? I note some motors use even
higher voltages.
I thought about installing a 7805 voltage regulator to provide 5 volts for the
servos and radio,
but as I haven't seen any reference to that in ads or newsgroups I am wondering
if indeed the
radio and servos will be OK on 8.4 volts.
David
The ESC (electronic speed control) includes a BEC (battery eliminator
circuit) that powers your receiver as well. You don't need to add anything
else! You can always use a separate battery pack for the receiver but WHY?
It's just extra weight and weight kills electric airplanes! Give us some
more info regarding the size motor you will be using, etc.
Towerhobbies has a number of different ESC's. You have to use one of
sufficient size to handle the amps. Ask questions here. Lots of us here can
help you!
plane. However, I can't
volts - but that seems
even higher voltages.
the servos and radio,
wondering if indeed the
However, I can't
- but that seems
higher voltages.
servos and radio,
wondering if indeed the
The speed controller has a 7805 type regulator built in. Its called a
BATTERRY ELIMINATION CIRCUIT (BEC)
Power from the flightpack is regulated and fed dwon the servo wire to
power the reciever via the servo connector.
Only if you exceed 10 cells does this simple form of regulator become too
stressed to be relaible,
when a separate regulator (UBEC) or separate reciever battery is indicated.
Read carefully-not all Electronic Speed Controls have Battery Eliminator
Circuits included. They will say BEC, if they have them. Make sure the
ESC's can handle the amps that the motor is going to draw.
--
Jim in NC
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.