| 摘要 |
<p>The present invention relates to an arrangement in a current detection circuit, comprising a primary coil (A) for the current (Iprim) to be detected, a separate transformer core (K) which is influenced by the current (Iprim) of the primary coil (A), a secondary coil (B) conducting a transformed secondary current, as well as a tertiary coil (C) connected to an operational amplifier (Am) including a feed-back resistor (Rf) and constituting a current/voltage converter circuit (CC) with an input resistance of nearly zero ohms, and in order to provide a detection circuit which can more easily be manufactured integrally with a circuit board and at the same time give full temperature compensation, it is according to the present invention suggested that the secondary coil (B) comprises at least one end-less and terminal-free disc-shaped member (B1 and/or B2).</p> |
