7700 Series: 5 - 20 kW, DC to 250 kHz, Three-Phase
7700 Series
Audio-bandwidth linear power amplifiers for EMC testing
- Stable when driving highly capacitive loads
- Field-selectable controlled-voltage or controlled-current operation
- Can be switched between rail supply modes to optimize for various load impedances
- Protection circuits guard against over/under voltage, over current, overtemperature, and circulating ground currents
Key Performance Capabilities:
- Up to 5000 watts RMS power output
- Small signal response up to 250 kHz
- Up to 85A at 13.5 VDC
- Output voltages up to ±180 Vp
- Can be used to create series or parallel systems for up to 3 times the voltage or 4 times the current output
AE Techron's 7700-Series amplifiers offer great power and flexibility. The series consists of three models; each model can be used as a free-standing gain block or combined in multiples to achieve high voltage (300 V RMS at 50 A RMS) or high current (up to 340A at 13.5 VDC continuously).
The 7794 was designed with a very low output impedance and is able to produce up to 60A continuous at 13.8 VDC, making it an excellent battery substitute for transient immunity testing. It is also capable of producing the 80V surges required for DO-160G section 16.6.2.4 abnormal surge testing and is well suited for ISO 7637 pulse 2b and 4 testing.
The 7796, when run in controlled-current mode, is a perfect choice to drive medium to large diameter Helmholtz coils and radiatiors like those specified in Ford FMC1278 (RI140, RI150).
The 7796HC can be used to simulate ripple noise, drop outs, surges and ground shift noise as required by a variety of standards for DC powered electronics in the aviation and automotive industries. With configurations capable of up to 600A, a DC-150 kHz bandwidth, and the ability to both source and sink, the 7796HC is your best solution for high-current DC Conducted Immunity testing.
Models
7794
AC Power at 20 kHz: 5000 watts RMS (0.5-ohm load); 50 V RMS, 100A RMS
Small Signal: 28V p-p to 250 kHz
DC Power: 60A at 13.5 VDC; 106A at 28 VDC
Output Voltage: ±100 Vp
7796
AC Power at 20 kHz: 5000 watts RMS (2-ohm load); 100 V RMS, 50A RMS
Small Signal: 28V p-p to 250 kHz
DC Power: 30A at 28 VDC (13.5 VDC not recommended)
Output Voltage: ±180 Vp
7796HC
AC Power at 20 kHz: 2500 watts RMS (0.5-ohm load); 40V RMS, 100A RMS
Small Signal: 28V p-p to 250 kHz
DC Power: 85A at 13.5 VDC; 70A at 28 VDC
Output Voltage: ±80 Vp
208 VAC version ONLY; 400 VAC version not available
Features
| Features | |
|---|---|
| Output Impedance | 3.2 mΩ + 2.2 µH |
| Noise Floor (10 Hz to 20 kHz) | <250 µV |
| Durable Design | 7794, 7796 and 7796HC amplifiers are built and tested to the most stringent quality standards for long life and outstanding performance |
| Change from controlled-voltage to controlled-current operation | Field-adjustable control mode and compensation settings |
| Parallel Operation | Up to four amplifiers can be connected in parallel for added current output |
| Series Operation | Up to three amplifiers can be connected in series for greater voltage |
| Ground-lift / Circulating Current Protection | Designed to protect the amplifier, DUT, and signal source from accidental ground loops |
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