| 摘要 |
<p>An electronic circuit is formed on a printed circuit board which is configured as a current to voltage converter using a printed circuit track as a sensor (20), the sensor being placed in parallel with a primary current carrying conductor, for example, a bus bar (10). The sensor (20) comprises two sensing coils (22, 24) arranged in a 'figure-of-eight' arrangement with a cross-over region (26). The sensor (20) has an output (28) connecting to processing circuitry. Current flowing through the bus bar (10) induces a magnetic field which is detected by the sensing coils (22, 24), the magnetic field being directly related to the magnitude of the current flowing through the bus bar (10).</p> |
