• Flexible Rogowski Coils

    Oct 22, 2019
    Rogowski Coils are available in four standard sizes and can also be supplied according to the customer's design by special order. A Rogowski coil current measuring system consists of the combination of a coil and conditioning electronics. Rogowski coils must be connected to an electronic integrator (also available at Ohio Semitronics) for 90° phase shift compensation and frequency equalization. READ MORE
  • Three-Phase Current Monitoring

    Sep 17, 2019
    A custom industrial furnace manufacturer came to OSI for three-phase current monitoring on a furnace. Ohio Semitronics supplied a split-core CTY series Current Transformer (UL listed) in combination with the 3ACT Three-Phase AC Current Transducer, also UL listed, which provides three isolated dc outputs that are directly proportional to the three current inputs. READ MORE
  • Nano Technology Experiments Require "Quiet" Grounding

    Jul 29, 2019
    A major research university asked OSI to deliver AC measurements to meet their needs for experimenting and requested resolution to 0.25 mA or 250 µA. Not challenging in itself, but the measurement device must also withstand a 20-amp surge in fault conditions. That’s a withstand range of 8 x 105 while maintaining the original accuracy when returned to the normal operating conditions. READ MORE