APS Dynamics - Systems for Generating Controlled Vibration
DUAL-MODE POWER AMPLIFIERS
Features
  • Voltage or current mode operation allows constant shaker force
  • Current Monitor signal proportional to instantaneous output
  • Protection circuitry - short-to-ground detection and overload shutdown
  • Forced air cooling for continuous operation at maximum output
  • Delivers rated current to shaker with blocked armature, resonant loads and reactive loads
  • High reliability operation - proven circuitry and components
Description
Dual Mode Power Amplifier The APS 114, 124 and APS 144 DUAL-MODE Power Amplifiers are designed specifically to provide drive power for electrodynamic shakers. The output stage uses proven high reliability power operational amplifiers arranged to produce a balanced output.

The amplifiers have features which make them uniquely suited for studying the dynamic characteristics of structures. They may be operated in either a voltage or current amplifier mode, selectable from the front panel. This operating mode selector switch facilitates shaker drive power interruption, in either a current or voltage mode, for observation of resonance decay in structures.

The Models 114-EP and 124-EP feature an "extended power" option which provides higher peak power with the same average power of the basic model. These models are recommended for random excitation.
Specifications
Model 114 Model
114-EP 		Model 124 Model
124-EP 		Model 144

Power
Output
RMS

125 V-A

125 V-A

250 V-A

250 V-A

500 V-A

Power
Output
Peak

250 V-A

375 V-A

500 V-A

750 V-A

1000 V-A

Current
Output
RMS

4 A

4 A

8 A

8 A

16 A

Current
Output
Peak

6 A

9 A

12 A

18 A

24 A

Frequency Range

0-2000 Hz

0-2000 Hz

0-2000 Hz

0-2000 Hz

0-2000 Hz

Noise

-90 dB

-90 dB

-90 dB

-90 dB

-90 dB

Input Power
Optional V

300 W

300 W

600 W

600 W

1200 W

APS Dynamics, Inc. is a subsidiary of SPEKTRA

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