| 摘要 |
<p>The method involves switching a diode (D) parallely in a reverse direction by a switching arrangement for each of electrochemical voltage sources (B) that are connected in series. Number of electrochemical voltage sources to be used is selected such that an operating voltage necessary for a danger warning device produces a flow voltage of the diode that is switched parallely in the reverse direction during a failure of the voltage sources. An independent claim is also included for a switching arrangement with electrochemical voltage sources for supplying voltage of a wireless operated danger warning device.</p> |
