7548 DC-ENABLED AC POWER AMPLIFIER


7224 amplifier

 

Up to 100 Apeak, DC - 100kHz Amplifier
for Pulse or Continuous Duty

Features

The 7548 power amplifier offers up to 100 Ap power, DC - 100 kHz bandwidth, controlled current or controlled voltage modes of Operation, in a compact 5U size. The 7548 works best with loads of 2 ohms or more. For greater voltage (up to 750Vp) or current, units can be combined in series or parallel.

Typically used as a gradient amplifier in small bore, high gain MRI systems of up to 100 Ap per axis and to reproduce waveforms found in EMC standards like MIL 704.

7548 with "P" option offers precision control of output offset, DC drift and gain linearity.

7548 voltage potential
  • AC SPECS
  • DC SPECS
  • FREQUENCY 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,
20% 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 200 0 200 0 200 0 141 0 141 0 0
16 195 12 195 12 195 12 138 8 138 8 1170
8 183 23 183 23 183 23 129 16 129 16 2104
4 165 41 165 41 165 41 117 29 117 29 3381
2 150 75     86 43     61 30 1848
1.5 134 90  
1 116 105  
0.5 66 112  

DC Specifications

7548 DC Power 7548 DC Thermal Test

 

Frequency Data


7548 Frequency Response chart 7548 Voltage Potential7548/7796 Output Impedance

 

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

7548 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 five EIA 19-inch-wide units.

Weight: 103 lbs (46.7 kg)

AC Power: Three phase, 208 VAC (±10%), 47-60 Hz, 20A AC service (400 VAC (±10%), 15A version available)

Cooling: Internal forced-air fans, 250 cfm.

Dimensions: 19 in. x 22.8 in. x 8.75 in. (48.3 cm x 57.9 cm x 22.25 cm)

AC Specifications - Multi-amp Systems

 

7548x2 IN SERIES

Ohms

PEAK OUTPUT

RMS OUTPUT
40mSec Pulse,
20% 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
32 390 12 390 12 390 12 276 8 276 8 2208
16 366 23 366 23 366 23 258 16 258 16 4128
8 330 41 330 41 330 41 234 29 234 29 6786
4 300 75 * * 172 43 * * 122 30 3660

 

7548x3 IN SERIES

Ohms

PEAK OUTPUT

RMS OUTPUT
40mSec Pulse,
20% 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
48 585 12 585 12 585 12 414 8 414 8 3312
24 549 23 549 23 549 23 387 16 387 16 6192
12 495 41 495 41 495 41 351 29 351 29 10,179
6 450 75 * * 258 43 * * 183 30 5490

 

7548x2 PARALLELED

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
8 195 24 195 24 195 24 138 16 138 16 2208
4 183 46 183 46 183 46 129 32 129 32 4128
2 165 82 165 82 165 82 117 58 117 58 6786
1 150 150 * * 86 86 * * 61 60 3660

 

7548x3 PARALLELED

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
5.34 195 36 195 36 195 36 138 24 138 24 3312
2.67 183 69 183 69 183 69 129 48 129 48 6192
1.34 165 123 165 123 165 123 117 87 117 87 10,179
0.67 150 225 * * 86 129 * * 61 90 5490

 

7548x4 PARALLELED

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
4 195 48 195 48 195 48 138 32 138 32 4416
2 183 92 183 92 183 92 129 64 129 64 8256
1 165 164 165 164 165 164 117 116 117 116 13,572
0.5 150 300 * * 86 172 * * 61 123 7320

*Not tested