7782 POWER AMPLIFIER

7782 amplifier

 

Short-Term, Burst or Continuous Power at Loads less than 2 ohms

7782 Voltage Potential

Features

The 7782 power amplifier offers up to 150 Ap power, DC - 50 kHz bandwidth, and controlled-current or controlled-voltage modes of operation. The 7782 is the original member of the 7000 series, offered now as a remanufactured product; it offers a balance of great value, reliability and strong performance. The 7782 works best into loads of 2 ohms or less. For greater voltage or current, units can be combined in parallel or series.

Typically used as a gradient amplifier in small bore, high gain MRI systems of up to 150 Ap per axis and to reproduce waveforms found in EMC standards like MIL STD 1275, MIL STD 461, DO160, and ATIS-0600315.2007.

Optional "P" version offers precision control of output offset, DC drift and gain linearity.

 

  • CONTROLLED VOLTAGE
  • CONTROLLED CURRENT
  • FREQUENCY DATA
  • PHYSICAL CHARACTERISTICS

AC Specifications

Standard
Ohms

PEAK OUTPUT
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle		 5 Min,
100% Duty Cycle		 1 Hr,
100% Duty Cycle		 5 Min,
100% Duty Cycle		 1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts
open             0 0 0 0 0
4     120 30 120 30 85 21 85 21 1799
2     120 60 115 58 85 42 81 41 3305
1     80 80 68 68 57 57 48 48 2311
0.5     46 92 44 88 33 65 31 62 1935

Optional High Current (HC) Version
Ohms

PEAK OUTPUT
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle		 5 Min,
100% Duty Cycle		 1 Hr,
100% Duty Cycle		 5 Min,
100% Duty Cycle		 1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts
2             0 0 0 0 0
1 56 56 55 55     39 39 0 0 0
0.5 42 84 41 82     29 58 0 0 0
0.1 15 150  

Check back soon for updated product information

7782 Frequency Response chart

 

7782 Voltage Potential

7782HF Voltage Potential

 

7782 DC Power Over Time Summary
Time in Minutes Impedance Volts Amps
2 1 50 50
2 0.5 30 60
1.5 0.27 19 75
5 1 40 40
5 2 84 42
Continuous 2 42 21

 

Indicators and Controls

Front Panel7224 amplifier front panel controls

LED Displays Indicate: Power, Standby, High AC Mains, High Temperature, Signal Overload and Faulty Output Stage.

Slide Switches for: Run/Standby, LED Indicator Reset

Back Panel

Signal Output: +/Common/Sampled Common

Signal Input: Barrier Strip, Balanced

7224 amplifier back panelCommunication Capabilities

Current Monitor: +/- 1V / 20A +/- 1%

Voltage Monitor: +/- 1V / 20V +/- 1%

Physical Characteristics

Chassis: All-aluminum construction designed for stand-alone benchtop or rack-mounted operation; with light pearl front panel and black chassis. The unit occupies six EIA 19-inch-wide units.

Weight: 128 lbs (57.9 kg),

AC Power: Three phase, 208 volts, 47-60 Hz, 20 amperes AC service.

Cooling: Forced air, 300 cfm.

Dimensions: 19 in. x 22.37 in. x 10.5 in. (48.3 cm x 56.8 cm x 26.7cm)

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