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After the series of products are connected to the working power supply, the output voltage of the regulator is adjusted to obtain the large current required for the test. The working principle diagram is as follows: 
C- is a normally closed normally open contact QA- is a fuse LD- is a power indicator HD- is a boost indicator HA- is a stop button SA- is a boost button TA- is an AC contact coil B- is a regulator T- is a current-raising transformer V- is a voltmeter AL- is a current mutual inductance a large current generator How to use:
1. Connect the working circuit according to the electrical schematic diagram. The transformer shell, console, etc. must be well grounded.
2. Through the power supply, the green indicator light on the console is on. Press the start button and the red indicator light is on. At this time, the riser waits for a rise.
3. Rotate the regulator clockwise and evenly. Pay attention to the output current indication on the console until the required high current. In order to ensure the test accuracy, a standard ammeter can be connected in series with the instrument terminal.
4. In the course of testing, if abnormal phenomena are found, the power supply should be cut off immediately and the cause must be ascertained before testing.
5. After the test is completed, the regulator must be returned to zero. Press the stop button to cut off the power and cut off the power supply before removing the test wiring to ensure safety.
Recently, more and more customers are interested in buying the LED Working Lamps with strobe or flash function which can make your vehicle look cool! In China, there're thousands of factories who produce the Led Working Lamps and Led Light Bars. But different factories, their prices are quite different, because of their housing thickness,LED's lumen and LED types are different. So when you import the Led Working Lamps, you should pay attention to those details! Otherwise, it's nonsense!
High current generator working principle (Figure):
September 06, 2019