BK9803 BK9803 BK9803 BK9803 BK9803


Programmable AC Power Source

The B&K Precision 9803 is a high performance AC power source with the capability of producing up to 300 VAC at maximum power output of 750 VA.


Max Voltage V


Max Current A

Max. Power (W)

AC or DC Output

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Documentation & Downloads


The BK9803 is both a programmable AC source and measurement tool. This fully programmable linear AC source delivers a maximum of 750 VA through the universal line output terminals on the front and the output connector on the rear. The output can be varied from 0 to 300 V with 0.1 V programming resolution. The output frequency can also be adjusted from 45 Hz to 500 Hz with start and stop phase angle from 0 to 360 degrees. The bright VFD display shows Vrms, Irms, Ipeak, frequency, power factor (PF), apparent power, true power, and elapsed output time.

This AC source provides a power line disturbance (PLD) simulator, list mode, and sweep mode for simulation of common power grid faults and disturbances. A built-in dimmer function is also available for testing motors and LEDs.

This is the UK spec 220VAC version with UK power lead.


  • 0 to 300 V, 0 to 6 A low distortion AC power source delivering a maximum of 750 VA
  • Output frequency adjustable from 45 Hz – 500 Hz
  • Select 150 V / 300 V autoranging or 300 V range operation for continuous sweep from 0 – 300 V
  • Displays Vrms, Irms, Ipeak, frequency, PF, apparent power, true power, and elapsed output time
  • Adjustable phase angle control
  • Built-in PLD and dimmer simulation
  • Voltage and frequency sweep mode
  • Downloadable LabVIEW driver and soft panel software for remote control
  • Standard USB (USBTMC-compliant), RS232, LAN, and GPIB interfaces
  • Pre-compliance testing for voltage dips and frequency simulation according to IEC61000-4-11 / 4-14 / 4-28

Common applications

The BK9803 AC power source is suitable for evaluating transformers, TRIACs, SCRs, and passive components as well as production, R&D, service, and pre-compliance testing.

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