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发明授权
US5946182A Power supply circuit for an electromagnetic coil having low DC and high AC voltage supply 失效
具有低直流和高交流电压电源的电磁线圈的电源电路

Power supply circuit for an electromagnetic coil having low DC and high AC voltage supply
摘要：
Power supply circuit for a single-winding electromagnet coil (11) comprising a low voltage DC power supply (20) and a high voltage AC power supply (30) both connected to the terminals of the winding (11), together with a switching apparatus (40) connected in series with the high voltage supply (30) and capable of supplying or cutting the high voltage power supply to the winding (11), characterized by the fact that the switching device (40) comprises a thyristor (42) connected between the high voltage source (30) and the winding (11) and a control circuit (43) for the thyristor (42) connected to the gate (G) of the thyristor used to cause the thyristor to conduct when the high voltage source (30) delivers the positive phase of a voltage wave.
摘要（中）：

包括连接到绕组（11）的端子的低压直流电源（20）和高压交流电源（30）的单绕组电磁线圈（11）的电源电路与开关装置 （40），其与所述高压电源（30）串联连接，并且能够向所述绕组（11）提供或切断所述高压电源，其特征在于，所述开关装置（40）包括连接的可控硅（42） 在所述高电压源（30）和所述绕组（11）之间，以及与所述晶闸管的栅极（G）连接的晶闸管（42）的控制电路（43），所述晶闸管用于在所述高电压源（30） 30）提供电压波的正相位。

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