7548 AC/DC Power Amplifier / Battery + Ripple Simulator

7548 amplifier

 

DC-enabled, 0 to 130 VAC power source

The AE Techron 7548 amplifier is a DC-enabled, high-powered unit designed to provide very low noise, low harmonic distortion and fast slew rates. The 7548 can be used singly or in series to meet or exceed Aviation AC power tests requirements found in RTCA/DO 160.

The 7548 can be used as a Voltage or Current Amplifier, so it also makes an ideal choice for driving large Helmholtz coils specified in MIL STD 461 or various Automotive Standards.

Two 7548 connected in series can output 240V RMS at 20 A RMS. The 7548 can also be connected to form large, low-distortion, two- or three-phase power systems with voltages of up to 600V L-L and 360 L-N.

The 7548 can operate in either voltage or current mode and features robust output devices and a power range of over 3300 watts RMS. It can safely drive a wide range of resistive, inductive loads.

Features:

  • Low noise, DC enabled, 0 – 130VAC power source..
  • Current-source or Voltage -source modes of operation.
  • 3.3 kVA continuous.
  • DC to 30 kHz at rated power; DC to 100 kHz at reduced power.
  • Can be combined to form larger, more capable systems.
    • Single phase AC with DC offset capable systems of 120VAC, 240VAC or 360VAC.
    • Three phase AC with DC offset capable systems of 208VAC, 400VAC or up to 600VAC L-L
  • Four quadrant operation (source and sink).
  • 3 mOhm output impedance.
  • STANDARDS
  • AC SPECS
  • DC SPECS
  • FREQUENCY DATA
  • PHYSICAL CHARACTERISTICS
  • MULTI-AMP

Use for testing to these Specifications:

MILITARY
MIL STD 461
  RS101

AVIATION
DO 160, Section 16 
  115/230VAC
  Single or Three Phase
  Harmonic
  DC Offset
  Surge and Drop outs

AUTOMOTIVE STANDARD
SAE J1113
  Part 22

AUTOMOTIVE OEM
CS2009.1
  RI 140

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.

7548 AC Specifications

Ohms
OUTPUT (RMS)
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Watts
Open 141 0 141 0 0
16 138 8 138 8 1170
8 129 16 129 16 2104
4 117 29 117 29 3381
2     61 30 1848

 

Typical Performance of 7548 x 3 Series System for DO 160 Section 16 Testing

 

Continuous

In Rush / 100 mS
Steady State 230 VAC 25A 70A
Abnormal Surge 230 VAC 25A 25A

 

7548 DC Power 7548 DC Thermal Test

 

7548 Frequency Response chart 7548 Voltage Potential7548/7796 Output Impedance

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

2 x 7548 in Series

Ohms
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Watts
32 276 8 276 8 276 8 2208
16 258 16 258 16 258 16 4128
8 234 29 234 29 234 29 6786

4 x 7548 in Series

Ohms
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Watts
64 552 8 552 8 552 8 4416
32 516 16 516 16 516 16 8256
16 468 29 468 29 468 29 13,572

2 x 7548 in Parallel

Ohms
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Watts
8 138 16 138 16 138 16 2208
4 129 32 129 32 129 32 4128
2 117 58 117 58 117 58 6786

4 x 7548 in Parallel

Ohms
RMS OUTPUT
40mSec Pulse,
30% Duty Cycle
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Volts Amps Watts
4 138 32 138 32 138 32 4416
2 129 64 129 64 129 64 8256
1 117 116 117 116 117 116 13,572