阅读说明：本技术 灭弧电路及装置 (Arc extinguishing circuit and device ) 是由 郭桥石 于 2019-09-18 设计创作，主要内容包括：一种灭弧电路及装置,特别是一种适合于对机械开关灭弧的灭弧电路及装置,所需灭弧的机械开关(K)与负载(RL)串联组成第一串联电路,其包括第一开关(S1)、第一充电单元(U1)、第一电容(C1)；第一电源通过第一充电单元(U1)对第一电容(C1)充电,机械开关(K)分断过程中,第二电源通过第一开关(S1)、第一电容(C1)对负载(RL)供电；第一充电单元(U1)为第一元件,或为第二开关,或由第一元件与第二开关串联组成。该灭弧电路及装置具有电容容量利用率高,电路简单的优点。(An arc extinguishing circuit and device, especially suitable for the arc extinguishing circuit and device to mechanical switch arc extinguishing, the mechanical switch (K) that needs arc extinguishing connects in series with load (RL) and makes up the first series circuit, it includes the first switch (S1), the first charging unit (U1), the first electric capacity (C1); the first power supply charges a first capacitor (C1) through a first charging unit (U1), and the second power supply supplies power to a load (RL) through a first switch (S1) and a first capacitor (C1) in the breaking process of a mechanical switch (K); the first charging unit (U1) is a first element, or a second switch, or is composed of the first element and the second switch in series. The arc extinguishing circuit and the arc extinguishing device have the advantages of high capacity utilization rate of the capacitor and simple circuit.)