| 摘要 |
<p>An electromechanical switching circuit with memory, comprises an integrated circuit (IC) having an input terminal (Vin), an output terminal (Vout) and a control terminal (Vadj). The IC is arranged in response to a voltage transition in a particular direction at the control terminal (Vadj) to sample the voltage level applied at the input terminal (Vin) and supply such voltage level at the output terminal (Vout). The output voltage level is maintained at the output terminal until a subsequent voltage transition in the particular direction at the control terminal (Vadj). A control circuit is connected to the control terminal (Vadj), the control circuit including a first monostable switch (SW1) whose momentary actuation causes a voltage transition in the particular direction at the control terminal (Vadj) so that the voltage level then applied at the input terminal (Vin) is supplied at the output terminal (Vout). An output circuit includes a second, electromechanical, monostable switch (RLA, SW2) whose contacts (SW2) are moved to their unstable state in response to a first voltage level at the output terminal (Vout) and allowed to resume their stable state in response to a second voltage level at the output terminal (Vout). A feedback connection (100) between the input and output circuits causes the voltage level applied at the input terminal (Vin) to toggle between the first and second levels in response to consecutive changes of state of the electromechanical switch (RLA, SW2).</p> |
