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实用新型
CN203817593U 一种安全节能的电焊机控制电路系统 失效 - 权利终止

一种安全节能的电焊机控制电路系统
摘要：
本实用新型公开了一种安全节能的电焊机控制电路系统，包括电源开关QS、交流接触器KM、电焊变压器T以及继电器KA，交流接触器KM与继电器KA的常闭触点KA1串联后并联在电焊变压器T的初级线圈两端，交流接触器KM的常开触点KM2连接在电焊变压器T的初级线圈输入端，且交流接触器KM的常开触点KM2的两端并联有电容C1，还包括电阻R1、电阻R2、电阻R3、整流二极管VD、稳压二极管VS1、稳压二极管VS2、单结晶体管VT、电容C2和电容C3。本实用新型采用上述结构，能够使电焊机空载电流大大减小，从而减小能耗，达到节能的目的，同时还能提高电焊操作的安全性。
摘要（英）：

The utility model discloses a safe and energy-saving electric welding machine control circuit system which comprises a power supply switch QS, an alternating-current contactor KM, a welding transformer T and a relay KA. The alternating-current contactor KM and a normally-closed contact KA1 of the relay KA are connected in series and then are connected in parallel to the two ends of a primary coil of the welding transformer T. A normally-open contact KM2 of the alternating-current contactor KM is connected with the input end of the primary coil of the welding transformer T. The two ends of the normally-open contact KM2 of the alternating-current contactor KM are connected in parallel to a capacitor C1. A resistor R1, a resistor R2, a resistor R3, a rectifier diode VD, a voltage-stabilizing diode VS1, a voltage-stabilizing diode VS2, a unijunction transistor VT, a capacitor C2 and a capacitor C3 are further included. According to the safe and energy-saving electric welding machine control circuit system, electric welding machine no-load current can be greatly reduced, accordingly, the purposes of energy loss lowering and energy saving are achieved, and meanwhile the safety of electric welding operation can be improved.

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