Regardless of the isolation solution selected, the voltage-sensing circuit for higher rail voltages can become complicated with respect to BOM and layout, but there often is no other practical option.

Current transformers perform this service in ac power systems. But the size and cost of isolated high-side dc sensing precluded its use in many applications.

Avago Technologies announces new precision optical isolation amplifiers for motor control and current sensing applications. The ACPL-790B, ACPL-790A, and ACPL-7900 devices improve the accuracy and ...

Summary Current measurement using Optical isolated sigma delta modulators offers the flexibility to configure itself between precision and speed by choosing the appropriate filtering schemes. Only ...

Sensing both AC and DC current — from milliamperes to several amperes. Sensing thousands of AC amperes with a current transformer (CT). Current setpoints can be fixed or adjustable. Input AC or DC.

Designed for AC or DC current sensing for motor control, switched-mode power supplies and solar invertors, the devices have a low-offset, linear Hall sensor circuit with a copper conduction path ...

Smart, accurate, tamper-proof power meters are an essential ingredient of the next-generation power grid. Isolation issues can prove a challenge for polyphase power meters. For a single-phase system, ...

Infineon has introduced an automotive current sensor IC, available in four pre-programmed current ranges: 25, 50, 75 or 120A. Called TLE4971, they are “ideal for on-board chargers, high-voltage ...

Having had no success with a current sensing transformer, he opted for an ACS712 chip, at heart a Hall effect sensor which outputs a voltage proportional to the test current.