Low-power consumption alternating current electric welding machine no-load energy-saving circuit

Abstract

The invention discloses a low-power consumption alternating current electric welding machine no-load energy-saving circuit. The energy-saving circuit comprises a power supply circuit, a pulse oscillator circuit, a monostable trigger circuit and a control circuit. The power supply circuit is composed of a voltage-reducing capacitor C1, a resistor R1, a voltage-stabilizing diode VS1, a rectifier diode VD2 and a filter capacitor C2. The pulse oscillator circuit is composed of a time base integrated circuit IC1 and a peripheral component. The monostable trigger circuit is composed of a time base integrated circuit IC2, a resistor R5 and a capacitor C5. The control circuit is composed of an optical coupler VLC, a relay K, an alternating current contactor KM, a bidirectional thyristor VT and the like. According to the low-power consumption alternating current electric welding machine no-load energy-saving circuit, the structural design of the circuit is reasonable, power consumption is low and control is convenient, the power consumption of the circuit is 1 / 10 of that of a general electric welding machine, and the market application prospects are very broad.

Description

technical field [0001] The invention relates to an automatic control circuit, in particular to a no-load energy-saving circuit for a low-power AC welding machine. Background technique [0002] Electric welding machine is a kind of commonly used welding equipment. The electric welding machine consumes more power when it is not working. Generally, the electric welding machine is equipped with an energy-saving circuit. However, the current energy-saving circuit of the electric welding machine is relatively complicated, and the switch needs to be manually adjusted to achieve energy saving. Effect. [0003] The control system of the digital submerged arc welding machine is the core component of the digital submerged arc welding machine, and the welding operation controller is the heart part of the control system, which realizes the automatic control of the welding machine. When working, a working arc voltage is generated between the welding wire and the workpiece. When the arc v...

AI Technical Summary

Problems solved by technology

[0004] The no-load power saver of the AC welding machine currently on the market is only a capacitor connected in series with the primary winding of the welding transformer when it is no-load, but there is still a large standby current, and the power consumption is still large when it is no-load.

Images