mm-intro.htm; updated: 01 January 2007

MicroMag

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

mm

16 x 18 x 4

10 x 10 x 4

8 x 3,5

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
Frequency

4
26.995

9
27.045

14
27.095

 

 

35 MHz Channel
Frequency

62
35.020

66
35.060

70
35.100

72
35.120

76
35.160

40 MHz Channel Frequency

52
40.685

55
40.725

 

 

 

41 MHz Channel Frequency

403
41.030

413
41.130

 

 

 

Still a few receivers are available on the 41 MHz band.
No more speedcontrollers
Other brand ESC’s are NOT compatible.

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