rffs-100 pwr out

[wacoykc]

What would be the power output limitation of the rfs-100 receiver, as far as driving multiple coil actuators, or the little 6mm micro pager motors (as actuators).
Regards
Byron

[dhurd]

Byron,
The onboard esc is limited to 5v (the receivers rating) at 1amp. You would have to develop your own circutry to use the rffs-100 actuator output to drive pager motors as it is simply a system of more current equals more throw with the magnetic actuators. You can drive two magnetic actuators with one output on the RFFS-100. For instance, if you wanted to use alierons instead of rudder then drive the two alieron coils from the rudder output with one coil reversed from the other.

Hope this helps.

Sincerely,
Dan

[Dave Robelen]

Hello Dan,
This brings up a point. You mentioned the ESC having a 5V output at 1A capability. Does the device have a voltage booster to get the 5V? I may have been mistaken in assuming that the battery voltage (2cells-3cells) was all the voltage that reached the coils, meaning more control power with 3.6V. Which way does it work?
Regards, Dave

[dhurd]

Dave,
If I'm understanding what your asking the answer is that the voltage output to both the coils and the motor are directly related to the number of cells you are using. The 5V limit actually arises from the limitation of the micro processor. To keep the weight down and the effieciency at max there is no voltage regulation built into the board. I'm not sure though what component limits the ESC to 1 amp as I'm not an electrical engineer. I did however pose a question to my dad if we could raise that limitation. As is common with my dad (and probably most engineers out there) when I asked my question he grunted something indecipherable and I'm not really sure I got an answer (I usually have to ask a question more then once to get and answer out of him :) ).

Sincerely,
Dan

[Dave Robelen]

Hi Dan,
Don't bother your dad if you haven't already. You answered my question. The voltage going to the coils is proportional to the source voltage, and there is no booster circuit.
Meanwhile, when it comes to testimony time, I will step up to the plate and tell em' that mine works slick as a whistle. From all the projects I have gotten correspondence about, you folks have produced a real winner.
Thanks, Dave