25-07-2015 | Technical Paper | Issue 3/2016

Development of thin film based flexible current clamp sensor using screen-printed coil
- Journal:
- Microsystem Technologies > Issue 3/2016
Abstract
This paper reports a novel flexible current clamp sensor with 480 turns silver paste coil (line/space = 50/50 μm) formed by through-holes and screen-printing technologies. Using screen-printing techniques, fine stripe patterns could be formed on a 50-mm-long and 10-mm-wide polyimide film in few seconds. Coil resistance between their contact pads is about 2.3 kΩ. When the value of a primary current was 20 A, the output voltage was 22.6 mV. Furthermore, the output voltage changed linearly with the changing of the primary current in the 0–20 A range. The sensor is developed using only coating, through-holes laser drilling, and screen-printing technologies. Therefore it can be fabricated by a reel-to-reel continuous film processing system.