High Finesse Precision Current Sources: From MicroAmps to hundreds of Amps

precision current sources

HighFinessePrecision Current Sources have been developed for experiments and quantum technologies in the areas of cold-atom and solid state physics. The linearly regulated BCS (Bipolar Current Source) and UCS (Unipolar Current Source) series deliver highly stable, low noise source currents for high precision magnetic field control. The current output is floating or is on a used defined potential. Ultrafast response to control signals and trigger functions, clear grounding, connection and signal isolation schemes make the integration of the current sources into complex experimental systems easy.

According to power ratings the current sources are built as air cooled or water cooled units. The current sources are supplied form the mains (single or three phase mains connection) or optionally from batteries. Besides the standard BCS- and UCS-Series, HighFinesse offers the very compact and modular SMD-BCS series, based on SMD electronics. SMD based micro- and milliampere sorces are available with integrated batteries and recharger unit.

With our current sources we are always open for customers requirements, so please don‘t hesitate to contact us for user defined functions or OEM applications.

The main benefits and properties of our current sources are

  • Current output: floating or on user defined potential
  • Analog / digital / manual current control
  • Trigger functions
  • Response time: adjustable between 50 μs and 100 ms
  • Current stabilty and reproducability on the ppm level
  • Mains suppression: below 10-5 x Imax
  • Galvanic / quasi-galvanic isolation of control signals


Magnetic traps, atom chips, Feshbach resonances, magnetic field control and compensation, magnetometers, NMR, SQUID.

You are here: Home Lasers Laser Measurement Wavelength Meters & OSAs High Finesse Precision Current Sources: From MicroAmps to hundreds of Amps