7796 AC/DC Power Amplifier

7796 amplifier

 

High-power, DC-
enabled AC Amplifier`

The AE Techron 7796 is a high-powered, DC-enabled, AC amplifier that is designed to provide very low noise, low harmonic distortion and fast slew rates. The 7796 can be used singly or in series to meet or exceed Aviation AC power tests requirements found in RTCA/DO 160.

The 7796 can be used as a Voltage or Current amplifier, and is a full four-quadrant design. This makes it an ideal choice for driving inductive loads like the large Helmholtz coils specified in MIL STD 461 or various Automotive Standards.

Two 7796 connected in series can output 200V RMS at 50A RMS at up to 30 kHz, exceeding DO 160 Section 16 normal and abnormal surge requirements.

At lower power levels it is very capable up to and past 100 kHz.

The 7796 can be connected to form large, low-distortion, two- or three-phase power systems with voltages of up to 500V L-L and 300V L-N.

Features:

  • Very low noise, DC enabled, 0 – 100VAC power source.
  • Current-source or Voltage -source modes of operation.
  • 5 kVA continuous.
  • DC to 30 kHz; DC to 150 kHz at reduced power.
  • Can be combined to form larger, more capable systems.
    • Single phase AC with DC offset capable systems of 0 to 200VAC or 0 to 300VAC.
    • Three phase AC with DC offset capable systems of 208VAC, 400VAC or up to 500VAC 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.

7796 AC Specifications

Ohms
OUTPUT (RMS)
5 Min,
100% Duty Cycle
1 Hr,
100% Duty Cycle
Volts Amps Volts Amps Watts
Open 128 0 128 0 0
16 112 7 112 7 795
8 109 13 109 13 1483
4 107 27 107 27 2287
2     100 50 5004

 

Typical Performance of 7796 x 2 Series System for DO 160 Section 16 Testing

 

Continuous

In Rush / 100 mS
Steady State 115 VAC 60A 140A
Abnormal Surge 180 VAC 40A 100A

7796 DC Power

7796 Temperature Over Time chart

7796 DC into 3 ohms

 

7796 Voltage Potential

7796 Temperature Over Time

7548/7796 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

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%), 15A 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 - Multi-amp Systems

2 x 7796 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
32 224 8.5 224 7 224 7 1568
16 224 13 218 13 218 13 2834
8 223 28 214 27 214 27 5778

4 x 7796 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
64 672 8.5 672 7 672 7 4704
32 674 13 654 13 654 13 8502
16 670 28 642 27 642 27 17334

2 x 7796 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
8 112 17 112 14 112 14 1568
4 112 26 109 26 109 26 2834
2 112 55 107 54 107 54 5778

4 x 7796 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
4 112 34 112 28 112 28 3136
2 112 52 109 52 109 52 5668
1 112 83 107 81 107 81 11556