Clarke-Hess 8200 and 8210 Transconductance Amplifier

The Clarke-Hess 8200 and 8210 are high-precision transconductance amplifiers designed for applications in power electronics, test and measurement laboratories and calibration environments. These amplifiers convert an input voltage into a proportional output current with high accuracy and stability over a wide frequency range of DC to 100 kHz (8200) and DC to 10 kHz (8210). With 100A output current, a compliance voltage of 7 V RMS, and low harmonic distortion (-60 dB to 10 kHz), these amplifiers are ideal for testing current transformers, power sensors and power meters.

Excellence in performance and accuracy

The Clarke-Hess 8200 and 8210 are designed for applications requiring high precision, stability and minimal distortion:

• > Output current range: 200µA to 100A in six ranges
• > Frequency range:
  • 8200: DC – 100 kHz
  • 8210: DC – 10 kHz
• > Short-term stability: 40 ppm
• > DC accuracy: 0,04%
• > AC accuracy: 0,10%
• > Total harmonic distortion:
  • < -60 dB (to 10 kHz)
  • < -50 dB (to 50 kHz, 8200)
  • < -40 dB (to 100 kHz, 8200)

The Clarke-Hess 8200 and 8210 maintain accuracy independent of load and can operate with inductive and capacitive loads without instability.

Versatile functionality

> 100% overload set range: All ranges can be loaded up to 200% of their rated value without loss of performance (except the 100 A range).
> Advanced colour display: Settings, compliance voltage (0 – 7 V) and input signal frequency (10 Hz – 500 kHz) are displayed in real time.
> Front panel calibration: DC offset and transconductance can be adjusted directly without opening the housing.
> Coaxial output for high currents: The 20 A and 100 A ranges use an LC connector to minimise inductance.

Applications

The Clarke-Hess 8200 and 8210 are ideal for:

> Calibration and testing of power meters, transducers and current transformers
> Research and development in power electronics
> Testing of precision resistors and low-resistance load tests
> Simulation of realistic current profiles for industrial and scientific applications

The Clarke-Hess 8200 and 8210 offer a unique combination of high precision, flexibility and ease of use, making them essential tools for current calibration and power electronics.