Explore the electrical science behind the need to protect current transfomer operations by maintaining both primary and secondary connections. READ MORE

The Ohio Semitronics WDC System helps you precisely identify how much energy is coming from solar generation vs. battery storage. Ohio Semitronics WDC integrates inputs from high precision current transducers and voltage transducers. The WDC system measures the DC current before it reaches the inverter and captures each independent measurement. The system measures and stores energy flowing in each direction, can even deliver net energy. WDC transducers are split-core and DIN mounted for easy installation. Once clamped on, WDC transmits the information to SCADA or other monitoring systems for direct visibility of your renewable energy flows. READ MORE

Each year original equipment manufacturers stop making key devices necessary to operate a wide range of products and systems in a variety of industries. Sometimes you can find these parts at electrical distributors, but when you cannot, Ohio Semitronics may have the solution. For more than 20 years, Ohio Semitronics has come to the rescue of companies in a pinch by remanufacturing or custom manufacturing hundreds of power measurement devices. The company specializes in products like current and voltage transducers, CTs, watt transducers, small transformers and a variety of power measurement systems from manufacturers like LEM, ABB, Honeywell, American Aerospace Controls and Scientific Columbus. No one has designed and manufactured more custom and obsolete power measurement devices than Ohio Semitronics. Functional prototypes can be designed and manufactured in as little as 3-6 weeks. OSI design teams will review your component specs land requirements and often times even improve device or system performance. The company specialized in high accuracy and high reliability devices. The process begins with a simple phone call and review of your product needs and deadlines. For more information, contact Ohio Semitronics at 614-777-1005 or email at [email protected]. READ MORE

The recent upsurge in solar flare activity ushers in a new season of risk for critical grid infrastructure – particularly EHV Transformers. The GIC Sensor from Ohio Semitronics can provide an early alert to geomagnetically-induced DC current that appears on the transformer neutral from a solar event -- allowing utilities to make informed protection decisions before a failure event occurs. READ MORE

The UFG Flux Gate Sensor is a solid core current transducer that provides ultra-high accuracy in a convenient compact enclosure. This sensor is perfect for precision measurements, medical devices, and electrical vehicle battery packs. READ MORE

Ohio Semitronics Inc. is proud to present that our DVT7 & DVTH products are UL-listed. READ MORE

DC CURRENT TRANSFORMATION. Many people arrive here looking for DC Transformers, hoping OSI has created a loophole in a few key laws of physics. Maybe what you really need is the ability to accurately transform from operating levels to signal or measurement levels while providing isolation between the two levels? READ MORE

There are many factors that impact the accuracy and reliability of DC current measurements. This short article examines how residual magnetism can significantly alter DC current measurements. Other factors that impact accurate measurement include, temeperature, overrange, offsets, linearity, harmonics, and the location of the sensor to what it is measuring. READ MORE