9205/9305 : Multi-Channel, 5 kW, DC to 250 kHz, up to 35A per channel, single-phase



9305 power amplifier


AE Techron's 9205/9305 amplifiers are 200Vp, DC-to-250 kHz capable amplifiers that offer a unique combination of switch-mode efficiency and linear-amplifier-like fidelity in a compact, portable package. They can be configured for Controlled Current or Controlled Voltage operation, and are able to drive virtually any type of load without a reduction in rated power, while maintaining low distortion and low DC drift.

9205/9305 amplifiers are a great choice when available AC Mains power is limited or may change. The 9205/9305 amplifiers couple an 85% operating efficiency with a universal, 100V-to-250V power supply with PFC (power factor correction). This highly efficient supply can draw up to 30% more power from a given-size AC Mains breaker while putting less noise back on the AC mains.

Combined, these features permit a 9205/9305 amplifier to produce up to 2 kW output when connected to a 20A, 120V mains supply and up to 5 kW from 230V or 240V sources. Plus, they can move seamlessly from lab to factory since they can be powered from any normal, single-phase, AC Mains supply.

With a slew rate of up to 150 V/µs and a minimum drop/rise time of 7µs, 9205/9305 amplifiers are fast enough to meet the surge and dropout requirements of many current EMC test standards.

9205/9305 amplifiers are two- and three-channel versions, with all channels drawing power from the amplifier's common power supply. This design allows power to shift dynamically between channels during operation, so up to 4500 watts of the power supply's potential 5000 watts can be available at any given moment for use by any single channel. This dynamic power capability makes the 9205/9305 amplifier able to perform like a much more powerful amplifier, making it well-suited for applications that have intermittent power demands for each channel over time, such as MRI systems, multi-channel positioning systems, or multi-element sonar.

Low THD+N and IMD distortion and low DC drift make 9205/9305 amplifiers ideal for many industrial multi-channel applications. Because the 9205/9305 amplifier's output is ground-referenced, channels can be used independently to create a three-phase, wide-bandwidth voltage source, or channels can be connected in series to form a higher-voltage differential output.

Altogether, 9205/9305 amplifiers are a great solution for a wide range of high-current, low-voltage, low-noise applications that require wide bandwidth and the ability to drive reactive or widely varying load impedances.


Multi-Channel Switch-Mode Amplifiers

  • Multi-channel options (available in 2- or 3-channel versions).
  • Operate as a voltage-controlled voltage source or voltage-controlled current source.
  • Four-quadrant operation.
  • Adjustable gain.
  • Stable when driving highly capacitive loads.
  • User-selectable current limit to protect fragile DUTs or where specified in the Standard.
  • DC enabled or DC blocked and DC Servo (for driving transformer-coupled loads or coils).
  • Balanced and/or unbalanced input.

Key Performance Capabilities:

  • Bandwidth – DC to 250 kHz
  • Minimum Drop/Rise Time – 7µs
  • Slew Rate – Up to 150 V/µs
  • Maximum Voltage – 200 Vp
  • Maximum Current – Up to 35 Ap per channel
  • Distortion – <0.1% at 1 kHz below clip
  • Max Long-Term Power – 5.0 kW




Per Channel, All Channels Driven Single Channel Driven
9205 9305 9205/9305
30 37A 37A 37A
60 37A 24A 37A
120 20A 13.5A 37A

Performance data is for a purely resistive load; when the load is reactive, it is possible for the All Channels Driven VA output to improve up to Single Channel Driven performance for all channels.

Per Channel, All Channels Driven Single Channel Driven
9205 9305 9205/9305
 13.5  35A 35A 35A
24 35A 35A 35A
48 34A 34A 34A

Common Data (all models)

Operating Modes: AC, DC, and AC + DC
Frequency, AC Mode Output (-3 dB): DC – 250 kHz
Max Voltage Ranges (no load),
0 – 130 VRMS
   AC + DC: 0 – ±200 VP
Load Regulation (ref to full scale): <0.05%, DC to 100 Hz; <0.1%, 10 Hz to 10 kHz
Line Regulation (full scale): <p0.1% for 10% line change
Harmonic Distortion,
   80 kHz, Low-passed:
Less than 0.3% from 10 Hz to 30 kHz;
   0.5% up to 50 kHz
   30 kHz, Low-passed: Less than 0.1% from 10 Hz to 50 kHz

DC Offset: <10 mV
Distortion: <0.2%
Voltage Slew Rate: Up to 150V per µs, typically 5 µs to 10 µs for 10% to 90% of full-scale change, depending on load and power
Efficiency: 85%, typical
Power Factor: .98, typical
Source Impedance: 3 mΩ + 3 µH
Cooling: Internal forced-air fans
Protection: Over/under voltage, over current, over temperature
Input, Signal In: BNC connector (unbalanced)
Output: High-current barrier strip

Operating Environment,
5 °C to 50 °C (41 °F to 122 °F);
      Maximum output power de-rated above 30 °C (86 °F)
   Humidity: Maximum relative humidity 80% for temperatures
   up to 31 °C decreasing linearly to 50% relative humidity at 40 °C
   Altitude: 3000 m Maximum
   Environment: Indoor Use Only, Pollution degree 2
Equipment Class: Group 1 Class A
Transient Overvoltage: Overvoltage Category II



Maximum Continuous Output Current: 37RMS AC or DC
Power: 2 kW from 20A, 120VAC; 9 kW from 30A, 230/240VAC
Output Channels: 2
Supply Voltage: Universal power supply with PFC, single-phase, 100V to 240VAC ±10%, 30A, 50/60 Hz
Dimensions (HxWxD): 3.47 x 17.3 x 22.8 in. (8.81 x 43.94 x 57.91 cm)
Weight: Approximately 44.5 lbs. (20.0 kg)


Maximum Continuous Output Current: 74ARMS AC or DC
Power: 2 kW from 20A, 120VAC; 13.5 kW from 30A, 230/240VAC
Output Channels: 3
Supply Voltage: Universal power supply with PFC, single-phase, 100V to 240VAC ±10%, 30A, 50/60 Hz
Dimensions (HxWxD): 3.47 x 17.3 x 22.8 in. (8.81 x 43.94 x 57.91 cm)
Weight: Approximately 56 lbs. (25.4 kg)

Controls, Indicators, and Connectors

9305 Front Panel
9305 Back Panel


Configuration Settings

9205/9305 DIP Switches


9205/9305 Datasheet

9205/9305 Datasheet

Complete technical specifications

Configuration Settings

Configuration Settings

DIP Switch Settings for 9205/9305 amplifiers

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