The document details a device modeling report for a DC motor (part number RE-280) produced by Mabuchi Motor, including simulation results for voltage and current characteristics under no load and fan load conditions. It emphasizes the use of the SPICE model for accurate results within a frequency range of 40 to 10 kHz. Copyright information for Bee Technologies Inc. is acknowledged throughout.

1. Device Modeling Report
COMPONENTS: DC MOTOR
PART NUMBER: RE-280
MANUFACTURER: MABUCHI MOTOR
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. Theory: Auto Balancing Bridge Method
Optimization of Simulation
Range of adjustment Frequency:40 to10K(Hz)
Frequency vs.|Z| and Frequency vs.θz Characteristic
Attention)
Please use SPICE MODEL within the range from 40 to 10K(Hz) for best accuracy.
LM
RS
CP
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. DC Motor Voltage and Current Characteristics at No load
Circuit simulation result
5.0A
4.0A
3.0A
2.0A
1.0A
0A
-1.0A
-2.0A
-3.0A
-0.1s 0.1s 0.3s 0.5s 0.7s 0.9s
I(V2) V1(X_U1.E_E_EMF)
Time
Evaluation circuit
V2
0Vdc
U1
+ RE-280
V1 - IL = 0.15
3.0Vdc
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. DC Motor Voltage and Current Characteristics (No load) Reference
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. DC Motor Voltage and Current Characteristics at Fan load
Circuit simulation result
5.0A
4.0A
3.0A
2.0A
1.0A
0A
-1.0A
-2.0A
-3.0A
-0.1s 0.1s 0.3s 0.5s 0.7s 0.9s
I(V2) V1(X_U1.E_E_EMF)
Time
Evaluation circuit
V2
0Vdc
U1
+ RE-280
V1 - IL = 0.9
3.0Vdc
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. DC Motor Voltage and Current Characteristics (Fan load) Reference
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005