Constant Current Vs Constant Voltage Power Supply Welding

Constant current and constant voltage drivers are both viable options for a power supply for led light sources what differs is the way in which they deliver the power.

Constant current vs constant voltage power supply welding.

Direct current dc power supplies can be constant voltage cv or constant current cc. This type of power sources is used with manual processes like shielded metal arc welding smaw and gas tungsten metal arc welding gtaw plasma arc welding paw as well as with. Constant voltage led drivers. An arc welding power source that maintains voltage at a relatively constant level regardless of fairly large changes in current caused by caused by changes in electrode extension.

A rectifier converts the ac into dc on more expensive machines. Just be aware of this anomaly. The most common classification is constant current power supplies and constant voltage power supplies. An arc welding power source that maintains current at a relatively constant level regardless of fairly large changes in voltage caused by changes in arc length.

From a design and arc control standpoint there are two fundamentally different types of welding power sources. Generally speaking there are two different types of welding power sources. A slight decrease in arc length will cause a decrease in arc voltage and a slight increase in amperage. Welding machines will supply both but they are capable of consistently maintaining only one of those variables while the other is maintained by some other means.

These are constant current and constant voltage power sources. To supply the electrical energy necessary for arc welding processes a number of different power supplies can be used. This type of power source is used primarily with processes that employ a continuously fed wire electrode. These include power sources that produce a constant current cc output and power sources that produce a constant voltage cv output.

Led drivers are the driving force that provides and regulates the necessary power to make sure the leds operate in. A transformer style welding power supply converts the moderate voltage and moderate current electricity from the utility mains typically 230 or 115 vac into a high current and low voltage supply typically between 17 and 45 open circuit volts and 55 to 590 amperes. These are very good questions and ones i am sure that have been asked by many welders. 2 constant voltage characteristics constant voltage power sources also known as constant potential are used in welding with solid and flux cored electrodes and as the name implies the voltage output remains relatively constant.

Just to confuse things some people use the terms variable voltage instead of constant current and variable current instead of constant voltage.