| 摘要 |
<p>A solid state circuit for controlling the energization of four magnet coils as may be used in a solid state timing relay. The circuit is arranged so two of the four coils are immediately energized when a first direct current source is connected to the circuit and the remaining two magnet coils are energized or remain energized for a predetermined time interval after the first direct current source is energized or de-energized, respectively. The circuit also is connected to a second direct current source that is continuously energized and during the timing period applies a reverse potential in series with a previously charged timing capacitor to provide consistent accurately timed periods.</p> |
