In the field of precision resistance welding, transistor welding power sources play a key role. In the DC circuit of the transistor welding power supply, a high-power transistor group is connected in series, so that any type of external characteristics required can be obtained, and the current and voltage can be adjusted steplessly. This is the transistor welding power supply, which belongs to the Electronically controlled welding power source. Among them, the transistor acts as an "electronic switch" or "linear amplification regulator" in the main circuit, and a "switching" or "analog" transistor group is combined with closed-loop feedback to control external characteristics and output current.
Transistor welding power sources have many distinctive features:
The transistor has extremely fast switching speed, flexible control and high precision. The analog output voltage has no pulsation and can obtain any current output waveform. This is suitable for welding tasks that require high accuracy of current waveform in precision resistance welding. The advantages are fully demonstrated and power supply for spot welding can ensure the stability and reliability of welding quality, and the HD-400B-all-rounds-comprehensive-welding-monitor.html">welding monitor can monitor this precise current output in real time.
The shape of the external characteristic curve can be adjusted arbitrarily according to the welding requirements to meet the diverse external characteristic requirements under different precision resistance welding processes. The welding monitor can record the welding parameters under different external characteristics and provide data support for subsequent traceability analysis.
Resistance welding power supply has rich adjustable parameters and a wide adjustment range. Especially for the transistor pulse arc welding power supply, the pulse voltage amplitude, pulse width, pulse frequency, base current, etc. can be precisely controlled and steplessly adjusted, and the arc energy can be accurately controlled. The control is suitable for welding different welding methods, different materials and different shapes of workpieces. Whether it is the welding of small precision electronic components or the precision resistance welding of large workpieces, it can handle it with ease. The welding monitor records the dynamic changes of these parameters in real time. Ensure that the welding process is fully controllable.
The loop time constant is small and the dynamic response speed is fast. The response speed is only 30-50μs for analog type and 300-500μs for switch type. With the help of electronic reactor and pulse waveform control, spatter-free and spatter-less welding can be achieved. The welding monitor monitors the spatter during the welding process to reversely verify the performance of the welding power source.
Power supply used in spot welding has strong anti-interference ability. Even in the face of network voltage fluctuations, ambient temperature changes and many other factors, transistor welding power can effectively compensate to ensure the stability of output voltage and current. The welding monitor records voltage and current data for a long time, This stability advantage can be visually demonstrated.
The pulse frequency is high, up to 20-30kHz. The switching transistor arc welding power supply can also obtain the required specification parameters and external characteristic shapes by adjusting the pulse duty cycle, providing technical support for the diversified process requirements of precision resistance welding. The welding monitor accurately records every adjustment of pulse parameters.
Transistorized welding power supply has good control performance and is easy to realize stepless adjustment, remote control and microcomputer control. Transistor welder spot welding machine cooperates with modern welding monitors and other intelligent equipment to create intelligent welding operation scenes.
However, inverter welding power supply also has certain disadvantages. The equipment is relatively heavy, has high power consumption, relatively low efficiency, high cost, and is difficult to maintain. This has also prompted the industry to continuously explore improvement solutions to improve its performance while reducing usage. and maintenance costs, and the data recorded by the welding monitor can provide a reference for improvement.
In short, the transistor welding power source has an irreplaceable position in the field of precision resistance welding. Welding machine transistors complements the welding monitor and jointly promotes the welding process to a higher level.
