mm-intro.htm; updated: 01 January 2007
Introduction to
the MicroMag System
The MicroMag
was designed to fill a gap in the market, a very small gap.
Was MicroMag
the first with this light stuff? Definitely
not!
Was the MicroMag the smallest, lightest commercially available?
Probably yes!
The MicroMag System is not available anymore.
The MicroMag System was designed to control
very light models. Intended for model aeroplanes but suitable
for tiny boats as well. The system consists of a receiver, up to two
proportional magnetic actuators and an optional 1.5 amp speedcontroller.
The whole system works from down to 2.2 volts up to 5.0 volts. This
enables the use of 2 NiCd, NiMH
or alkaline cells or one Lithium cell in case of a glider or a CO2 model. When using an electric motor
to power the model, the voltage of the cells will go down to below 1.1 volt per
cell quickly, then one lithium or 3 to 4 NiCd/NiMH
cells are required.
The actuators are fully proportional, the
current in the coil follows the stick and generates a magnetic field that is
proportional to the current. This produces a moment on the magnets that is
proportional to the stick position. The actuators (servo's is not the right
word as these don't have feedback) can produce only a limited force, which
means that special precautions have to be taken to ensure a good response of
the model.
MicroMag |
|
m-Mag Receiver |
m-Speed
Controller |
m-Mag actuator |
Mini-Mag
actuator |
Operating Voltage |
Volt |
2.2
– 4.8 |
2.2
- 4.8 |
2.2
- 4.8 |
2.2
- 4.8 |
# of Nicad
Cells |
# |
2
– 4 |
3 -
4 |
2 -
4 |
2 -
4 |
Weight |
Grams |
1.8 |
0.5 |
0.7 |
1.7 |
Size |
mm³ |
16 x
18 x 4 |
10 x
10 x 4 |
Ø 8
x 3,5 |
Ø 12
x 5,5 |
Antenna Length |
mm |
250 |
|
|
|
Motor current |
A |
|
1,5 |
|
|
BEC |
|
|
No
Drop |
|
|
Coil resistance |
W |
|
|
108
Ohm |
100
Ohm |
Control force @ 3 V |
Grams |
|
|
2 |
3 |
@ Lever arm |
mm |
|
|
5 |
7 |
The receivers are equipped with soldered SMD micro crystals, so they are
not interchangeable.
MicroMag
frequencies that were available |
|||||
27 MHz Channel |
4 |
9 |
14 |
|
|
35 MHz Channel |
62 |
66 |
70 |
72 |
76 |
40 MHz Channel Frequency |
52 |
55 |
|
|
|
41 MHz Channel Frequency |
403 |
413 |
|
|
|
Still a few receivers are available on the 41 MHz band.
No more speedcontrollers
Other brand ESC’s are
NOT compatible.
Copyright © 1999 Ruijsink
Dynamic Engineering. All trademarks shown
are trademarks of their respective owners. All rights reserved.
http://www.ruijsink.nl, designed by Rick Ruijsink