LED Tester CA-300S for LED Strip Light
Suitable for testing all kinds of LEDs, LED lamps, LED lights on TV, Christmas trees, decorations, etc.
Please watch the video!
Using 8-bit high-speed LED driver chip digital display voltage, the output voltage automatically adapts according to the load, atep power supply, the voltage will rise from 200V to 300V. protection, overcurrent protection, hot and cold insulation.
Method
Please plug the red and black probe line into the banana seat, the red probe cable of the output is positive, black is negative, corresponding to the LED lamps or the light of the positive and negative poles. Through the voltage value and the state of the light to determine the fault.
Usage
1) digital display 0, it is short circuit
2) digital display 300V, it means open circuit
3) test two electronic circuits connected to the original, display 0-300V, indicate leakage.
4) test regular diode, tester is connected to the negative pole of diode, negative receiver diode connected to cathode, test time is not more than 3 seconds. Digital tube shows the value of diode regular value.
5) Tes electrolytic capacitor, tester is connected to the positive pole of capacitor pole, negative connection of tester to the negative pole of diode, digital display shows the value of stability after electrolytic capacitor voltage. test, otherwise the capacitor will heat up due to charging.
6) according to digital display tube roughly determine the number of lights in series
(3V lamp: number of series = display value / 2.8; 6V lamp; number of series = indicative value / 5.5)
7) test several groups of parallel TV backlight bar, when subgroup test, digital tube voltage should be displayed approximately the same, if different, can determine a group of light bar failure. aging and the resistance of the bulb increases,
The voltage is too low means that the lamp is burned out and short circuit, voltage 300v means that the lamp burns out the entire circuit breaker).