AE Techron 7796 Power Amplifier DC – 30 kHz 6.6kW for MIL-STD 704

Description

AE Techron 7796 Power Amplifier DC – 30 kHz 6.6kW offers up to 200 Ap power, DC – 100 kHz bandwidth, and controlled-current or controlled-voltage modes of operation. The 7796 works best into loads of 2 ohms or less. For greater voltage or current (up to 800 Ap) units can be combined in parallel or series.

Typically used as a gradient amplifier in small bore, high gain MRI systems of up to 200 Ap per axis and to reproduce waveforms found in EMC standards like MIL STD 1275, MIL STD 461 and DO160.

 

MODEL SERIES OVERVIEW

7700-series EMC RF Power Amplifiers DC – 250 kHz, 5 – 20kW, Three Phase for Conducted Immunity Testing

Features

  • 30A continuous at 28 VDC
  • 200A in-rush current capability
  • 150 kHz small signal bandwidth
  • ±180 VDC capable
  • 41 V/µS slew rate
  • Four-quadrant operation (source and sink)
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Specifications

Frequency response DC – 30 kHz, +0.1, -0.5 dB
8 ohm power response DC – 50 kHz:  ± 150 Vpk
DC – 150 kHz:  ± 50 Vpk
DC – 200 kHz:  ± 25 Vpk
Maximum continuous output power 6600 watts RMS
Slew rate 41 V/μSec
Phase response ± 8.3 degrees (10 Hz – 10 kHz)
Unit to unit phase error ± 0.1 degrees at 60 Hz
Output offset 7796 < 5 mV, field adjustable to < 1 mV
7796P < 200 µV
Output offset current < 10 mill amperes DC
DC drift 7796 ± 1.5 mV
7796P ± 400 μV (from cold to max operating temp)
± 200 μV (after 20 minutes of operation)
Residual noise Unfiltered < 75 μV
Filtered (400 Hz – 30 kHz) < 55 μV
THD DC – 30 kHz < 0.1%
Input Characteristics
Balanced with ground 3 terminal barrier block connector 20k ohm differential
Unbalanced BNC connector, 10k ohm single ended
Gain
Voltage mode 20 volts/volt
Current mode 20 amperes/volt
Gain Linearity (over input signal, from 0.2V to 5V) 7796 0.1%
7796P DC 0.0125%
AC 0.030%
Max Input voltage ± 10V balanced or unbalanced
Input impedance 20k Ohm differential
Input sensitivity 3.0V input for 3800W output into 1 ohm (adjustable)
Common mode rejection range ± 11 VDC max
Common mode rejection ratio 70 dB
Display, Control, Status, I/O
Front Panel LED Displays indicate Run, Ready, Standby, Stop, and Fault conditions in the output stage
LCD Display Lists type of fault condition and gives suggested corrective action
Soft Touch Switches for Run (Enable), Stop, Reset
User Configurable LCD display can be configured for up to four simultaneous displays reporting one, two or all four of the following: Voltage Peak, Voltage RMS, Current Peak, and Current RMS
Back Panel
Power Connection NEMA-style locking receptacle; matching AC connector also included
Signal Output 4-position terminal barrier block
Signal Input User-selectable Unbalanced BNC or Balanced Barrier Strip
Interlock Connector 25-pin D-sub connector used for amplifier control and status applications; also used in multi-amplifier applications
Communication Capabilities
Current Monitor ± 1V / 20A ±1%
Voltage Monitor ± 1V / 1V ±1%
Reporting System Fault, OverTemp, Over Voltage, Overload
Control Force to Standby; Reset after a fault
Protection
Over/Under Voltage ± 10% from specified supply voltage amplifier is forced to Standby
Over Current Breaker protection on both main power and low voltage supplies
Over Temperature Separate Output transistor, heat sink, and transformer temperature monitoring and protection
Physical Characteristics
Chassis All aluminum construction designed for stand-alone or rack-mounted operation with black chassis; the amplifier occupies seven EIA 19-inch-wide rack units
Weight 153 lbs. (69 kg)
AC Power Three-phase, 208 VAC ±10%, 47-60 Hz, 30A AC service. (400 VAC +/-10%, 20A version available)
Dimensions 19 in. x 22.8 in. x 12.25 in. (48.3 cm x 57.9 cm x 31.1 cm). Unite occupies seven EIA 19-inch-wide rack units.
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