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3B Scientific Motor, 12 V DC User Manual

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3. Technical data

Nominal voltage:

12 V DC

Max. permissible operating voltage:

15 V DC

Idling speed:

3800 rpm

Nominal speed at rated torque: 3100 rpm/5 mNm

Nominal current without load/
with nominal load:

55 / 210 mA

Power consumption:

2.9 W

Voltage per speed of rotation:

3.6 … 4.4

rpm

mV

Rotor impedance:

12

Ω

Starting torque:

29 mNm

Acceleration time (no-load):

12.5 ms

Direction of rotation:

Reversible

Max. permissible bearing load:

radial at shaft-end:

5.0 N

axial:

0.5 N

In the case of older motor models from an earlier

range, the voltage sensitivity is in the range of:

2.8 … 3.6

rpm

mV

4. Sample experiments

Fig. 1: Experiments on uniform motion (top) and friction (bottom)

Fig. 2: Excitation of transverse waves in a rubber band using a sine wave generator