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Digital switching power amplifier
The system uses a digital power amplifier with sinusoidal pulse width modulation. The working principle is: using the high-frequency switching capability of the IGBT FET, the low-voltage signal input by the controller is amplified by the digital circuit and restored to the original signal, and then output to the moving coil of the vibrating table to promote the electric vibration. Taiwan movement.
The main components of the intelligent high voltage power amplifier are: front control, power amplifier module, protection circuit, power supply part and electric cabinet. The system adopts high voltage and small current output form, which reduces the power loss during transmission and achieves effective and reasonable impedance matching.

index	Advantages and characteristics
Power amplifier power module	New generation IGBT driver module, single module 30kvA
Logic module of power amplifier	PLC control, color LCD display, touch screen operation (domestic only)
Power amplifier cooling	Absorb the experience of British LDS, US UD and other companies, using the bottomair inlet, top exhaust system, efficient heat dissipation,to ensure good heat dissipation inside the box when the amplifier is running for a long time.
Anti-electromagnetic radiation shielding layer	Anti-electromagnetic radiation shielding layer
Random test dynamic range	Up to 42dB of random test dynamic range, up to the national standard A level standard, to ensure low-frequency small information number test, strong anti-interference ability, waveform is not distorted.
Water smoothing table	The hydrostatic bearing is used to achieve high overturning moment and large load during the test of the cabinet.
DD	Power devices, moving coils, and excitation lines are all imported.

Sinusoidal thrust	300kgf
Random thrust	300kgf rms
Impact thrust	600kgf
Frequency Range	5~2800Hz
Continuous displacement	25.4mm
Maximum speed	1.8m/s
Switching power amplifier
Amplifier output	3.5kVA
Signal to noise ratio	>65dB
IF gain	≥80
Total harmonic distortion (at rated output)	Less than 0.5% when DC (0.1Hz) to 500Hz; less than 1.0% when 500Hz to 5000Hz
Power amplifier frequency response	DC (0.1Hz) to 4500Hz: ±3dB;
Mean Time Between Failure (MTBF)	>35,000 hours
Vertical expansion countertop
Table size	600mm×600mm
Upper limit ope rating frequency	Sine 2200Hz, random 3500Hz
Counter weight	30kg
Countertop material	Aluminum alloy
Vibration controller
operating system	Windows 7
Operation interface	Chinese and English interface
Software function	Sine, random, classic shock, resonant search and resident

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