| 摘要 |
<p>Electro-fishing apparatus comprising a trawling net (16) which during operation is towed over the bottom, a combination of electrodes (10, 12) which, during operation, are towed over the bottom at a distance in front (14) of the net (16), and a pulse generator (28) which is connected to said electrodes (10, 12) to generate during operation a pulsed electric field in the water. The electrodes comprise at least partly a number of electrically conducting bodies (10a, 10b, 10c,...) each through a separate connection cable connected to said pulse generator (28), whereby the water contacting surface of each electrically conducting body (10) is limited such that a specific electrical resistance is created. The pulse generator (28) is embodied such that each of said electrically conducting bodies (10) can be powered separately to generate a field between the momentaneously powered electrically conducting body (10) and another electrode (12).</p> |
