Bipolar Power Supplies

Kepco has been know for decades for its Bipolar Power Supplies that are used in many applications like particle beam steering, magnetic field cancellation, battery simulation and testing, magnet applications, medical imaging, solar panel testing and many more. The Kepco Bipolar Power supplies operate in 4 quadrants and thus are able to source and sink power to/from the load up to high frequencies.


What is a 4 Quadrant Bipolar Power Supply

Normal Power supplies operate in a single quadrant, delivering power to a load. Kepco’s BOP (Bipolar Operational Power Amplifiers) operate in all four quadrants of the voltage-current axis, therefore their output may swing seamlessly from negative to positive voltage and the output current may also swing from positive to negative values. The result of this is that BOP will function as a source or a sink, meaning it will either deliver power to a load or absorb power from a load. In order to do that, the BOP is built as a power amplifier with a bipolar output, having a frequency bandwidth much larger than a regular power supply. The frequency bandwidth is model and option dependent.


Models Bipolar Power Supplies

Kepco offers 3 series of Bipolar Power Supplies:

  • 1 kW Low Voltage Switch-Mode with regenerative sink
  • 200 and 400 Watt Low Voltage Linear
  • 40 Watt High Voltage Linear


BOP Series
High Power
1 kW Switch-Mode regenerative sink
± 6, 10, 20, 25, 36, 50, 72, 100 Volt
Digital Controller with arbitrary waveform generator
100, 200 and 400 Watt Linear, Analog Control
± 20, 35, 50, 72, 100, 200 Volt
GPIB/RS232 Interface option
Ethernet Interface option
“L” version for highly Inductive loads
“C” version for highly capacitive loads
High Voltage
40 Watt Linear
± 500, 1000 V