7796 POWER AMPLIFIER

7796 amplifier

 

Precision Linear Amplifier with up to 200 Apeak Power

Features

The 7796 power amplifier 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.

7796 with "P" option offers precision control of output offset, DC drift and gain linearity.

Optional "PB-315" version can be used to reproduce the waveforms found in the ATIS-0600315.2007 Telecom standard. Please contact Sales for more information.

 

7796 Voltage Potential

  • AC SPECS
  • DC SPECS
  • FREQUENCY DATA
  • OTHER TEST DATA
  • PHYSICAL CHARACTERISTICS
  • MULTI-AMP

AC Specifications

Note: Testing performed into resistive loads as specified. Performance reported is typical into the specified load up to 20 kHz frequency levels. Performance may be affected when operating into highly reactive loads or above 20 kHz, reducing maximum voltage, current and power output.

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 181 0 181 0 181 0 128 0 128 0 0
16 159 12 159 10 159 10 112 7 112 7 795
8 159 19 154 19 154 19 109 13 109 13 1463
4 158 39 152 38 152 38 107 27 107 27 2887
2 157 79 * * 141 71 * * 100 50 5004
1.5 148 99 * * * * * * * * *
1 140 140 * * 71 71 * * 50 50 2509
0.5 106 209 * * 63 127 * * 45 90 3999
0.25 53 209  
*Not tested

DC Specifications

 

7796 DC Power

 

7796 DC into 3 ohms

7796 Temperature Over Time chart

Frequency Data

 

7796 Voltage Potential

 

7548/7796 Output Impedance

Thermal Performance

7796 Temperature Over Time

Accuracy

7796 Transconductance Accuracy

Physical Characteristics

Indicators and Controls

Front Panel7796 amplifier front panel controls

LED Displays Indicate: Ready, Standby, and Fault Conditions in the output stage

LCD Display: Lists type of Fault Condition and gives suggested corrective action; User-configurable for up to four simultaneous displays reporting, one, two or all four of the following: Voltage Peak, Voltage RMS, Current Peak, and Current RMS

Soft Touch Switch: Places amplifier in Run or Standby mode

Back Panel

Signal Output: +/Common/Sampled Common

Signal Input: User Selectable BNC or Barrier Strip, Balanced

7796 amplifier back panelCommunication Capabilities

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

Physical Characteristics

Chassis: Black, all-aluminum chassis is designed for stand-alone or rack-mounted operation. The unit occupies seven EIA 19-inch-wide 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)

Cooling: Internal forced-air fans, 500 cfm

Dimensions: 19 in. x 22.8 in. x 12.25 in. (48.3 cm x 57.9 cm x 31.1 cm)

AC Specifications - Paralleled Systems

 

2 x 7796

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 181 0 181 0 181 0 128 0 128 0 0
8 159 24 159 20 159 20 112 14 112 14 1568
4 159 38 154 38 154 38 109 26 109 26 2834
2 158 78 152 76 152 76 107 54 107 54 5778
1 157 158     141 142     100 100 10000
0.75 148 198                  
0.5 140 280     71 142     50 100 5000
0.25 106 418     63 254     45 180 8100

 

4 x 7796

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 181 0 181 0 181 0 128 0 128 0 0
8 159 48 159 40 159 40 112 28 112 28 3136
4 159 76 154 76 154 76 109 52 109 52 5668
2 158 156 152 152 152 152 107 108 107 108 11556
1 157 316     141 284     100 200 20000
0.75 148 396                  
0.5 140 560     71 284     50 200 10000
0.25 106 836     63 508     45 360 16200