The humidity indicator circuit consisting of a humidity detecting amplifier and an LED indicating circuit is shown in the figure. The RP uses an organic solid potentiometer or a variable resistor. Adjust the resistance of the RP to set the humidity value that needs to be alerted. R1 to R5 use 1/4W metal film resistors or carbon film resistors. The RS is made of a 3DG6 type transistor having a value greater than 100. When measuring, use the black meter of the multimeter to connect the c pole, the red meter pen is connected to the forehead, and when the mouth is used to ventilate the transistor, the pointer of the multimeter should swing to the right quickly; when the water vapor on the tube is evaporated, the needle can gradually The left swing is normal.
Welding Generator Set is high efficient power equipment with All in one functions:
. All in one function of Welding and Power Generating.
. Adopt DC welding power source with easy to strike ARC.
. The ARC is stable with less spattered.
. The welding current is continuous and adjustable with more safe and reliable.
. The wide range of welding current makes it adapt to different welding purpose.
. Providing three phase and single phase auxiliary lighting and power supply.
. Full function of silent type.
. Full function of moving type
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Guangdong Superwatt Power Equipment Co., Ltd , https://www.swtgenset.com