Induction stylus use and precautions
I believe that many people have checked their own home wiring lines or meters, it must be less inductive stylus this commonly used electrician's tools. Power pen we also often called test pen, is a kind of go to test whether the wire in the electrified gadgets. It has a very high utilization rate and is used in a wide range of applications.
How to use an inductive stylus
Commonly used low-voltage stylus, mastering the test two grip method. Pen-type stylus, the palm of the hand touching the metal clip. Thumb index finger and middle finger, pinch the middle of the pen rod. Rotary chisel type stylus, index finger press the end of the metal cap. Thumb middle finger ring finger, pinch the middle of the plastic rod. Neon tube small window backlighting, towards their own will observe.
Notes on the use of the inductive stylus
1, before using the test pen, first check the test pen with or without safety resistors, and then intuitively check the test pen whether there is damage, there is no moisture or water, after passing the inspection can be used.
Principle: test pen with resistance, there is a luminous body - neon tube, the key to the neon tube, after the resistor voltage reduction, there is a voltage to one end of the neon tube, the formation of a high potential, your hand needs to touch the end of the metal end of the electric pen, and now you're the ground, in the neon tube there are two sections of thin wire, close to each other, but not even, neon tube is naturally filled with neon gas, there is a suitable potential difference can be generated by the glow discharge. If the voltage is too large, it will instantly break through the neon tube, then the neon tube plays the role of insurance, will not produce too much harm to you, the low voltage will be more dangerous, because the traditional electric pen, that is, neon tube pen, in about 100V or so before it will be bright, carelessness should not be, in addition to the pen do not get into the water, or you will know how it feels to electrocute.
2, the use of test pens, you can not touch the front end of the test pen metal probe, this will cause personal electric shock accident.
3, the use of test pens, be sure to use your hands to touch the end of the metal part of the test pen, otherwise, due to the charged body, test pens, the human body and the earth does not form a circuit, the neon bulb in the test pen will not glow, resulting in a miscarriage of justice, that the charged body is not electrified, which is very dangerous.
4, in the measurement of electrical equipment is charged before, first to find a known power test a test pen neon bubble can be normal light, can be normal light, in order to use.
5, in the bright light test charged body, should pay special attention to whether the neon bubble really light (or not), if necessary, the other hand can be used to block the light to carefully identify. Do not cause a misjudgment, the neon bubble light for the judgment of non-glow, and will be judged to have electricity for no electricity.
