Dongling Vibration offers a full line of high performance “DA Series” switching power amplifiers. These state-of- the-art DA amplifiers are highly efficient D class type, which supplies with field power, driving power and blower power. They are compact design and provide enough interlocks for your shaker, cooling blower and other associated equipment. All DA model modules are assembled with identical MOSFET or IGBT plugs, and additional modules can easily be added to give increased power outputs, or to connected together in parallel for higher output current. All our DA amplifiers use name brand top quality components and the latest in design engineering to guarantee you a system that is built to operate efficiently and reliably for years to come. We can also design replacement amplifier for other manufacturers’ shaker system.

◎OutputPowerRange
The DA Series amplifiers offer a wide range of output power from 1 kVA to 480 kVA to meet your various needs.Two 4-digit LED with an accuracy of 2% at full scale display the current and voltage of the output power.
◎Modular Design
These systems utilize plug-in modular construction, which allows instant assembly to achieve the wanted output power. With all systems using the same basic modules, a ready source of spares is assured. These amplifiers consist of logic module, power modules and transformer. The logic module houses the system modulator, current limiting, interlock circuitry and system alarms. Power modules may be connected in parallel for higher current to match the system drive signal. The modular design and compact structure help save power, space and cost.
◎Power Coefficient
It adopts power coefficient compensation technology, which ensures power coefficient up to 92%. The input power was fully made use of.
◎High Conversion Efficiency & High Signal-to-Noise Ratio
Based on IGBT technology and Sine Octave Pulse-Width Modulation technique, the DA amplifiers offer high efficiency (greater than 95%) and high Signal-to-Noise ratio (more than 65 dB) and reduce harmonic distortion to no more than 1.0% (Measured with resistive load).
◎Low Parallel Current Imbalanced Ratio
Current auto-balanced technique assures current imbalanced ratio no more than 3%.
◎Good EMC & Low EMI and RFI
The Soft Switching Harmonic technology and designs in filtering and shielding have provided significant improvements in the EMC and the reduction of radiated and transmitted emissions (EMI and RFI).
◎100% Air Cooled
All the “DA Series” amplifiers are forced air-cooled totally. The cooling model ensures its efficiency and reliability.
◎Interlock Protection
Over 15 Automatic Amplifier Interlock Protections: Each with a lighting diode. These interlock protections include Over-Current, Over-Temp, Over-Voltage Over-Travel etc. The emergency stop switch is adopted also to strengthen safety.
◎Spare Parts and Service Support
DA Power Amplifiers are available to replace most brands of linear amplifiers. Please contact Dongling for a recommendation and prompt quotation for your system.

Technical parameter

● Output Power Range (1 kVA～480 kVA) ● Modular Design (Save Power、Space and Cost) ● Power Coefficient (>92%) ● Extremely High Conversion Efficiency (>95%) ● High Signal-to-Noise Ratio (>65dB) ● Low Parallel Current Imbalanced Ratio (≤3%)

● Good EMC & Low EMI ● 100% Air Cooled ● Interlock Protections ● LCD Display and Remote Control (optional) ● Spare Parts and Service Support