Alternative ways to use an electric stylus
In addition to determining whether an object is electrically charged, the stylus has several other uses:
(1) It can be used for low-voltage phase verification, measuring whether any conductors in a line are in phase or out of phase with each other. Specific method is: stand in an object insulated from the earth, hands each holding a stylus, and then in the two wires to be tested on the test, if the two stylus luminous is very bright, the two wires for the different phase; Conversely, it is the same phase, it is the use of stylus neon bubbles in the difference in voltage between the poles of the neon bubble and its luminous strength is directly proportional to the principle of discrimination.
(2) can be used to distinguish between alternating current and direct current. In the test with the stylus, if the stylus neon bubble in the two poles are luminous, is the alternating current; if the two poles in only one pole luminous, is the direct current.
(3) You can determine the positive and negative poles of DC. Will be connected to the stylus in the DC circuit test, neon bubble light that pole is the negative pole, does not light a pole is positive.
(4) can be used to determine whether the DC ground. Insulated to ground in the DC system, can stand on the ground with a stylus contact DC system in the positive or negative pole, if the stylus neon bubble does not light up, there is no grounding phenomenon. If the neon bubble is bright, it shows that there is a grounding phenomenon, and its bright such as the tip of the pen, then the positive pole is grounded. If the light is at the end of the finger, it is negative grounding. However, it must be pointed out that in the DC system with a ground monitoring relay, can not be used to determine whether the DC system is grounded!
Operation method of digital stylus
1, immediate measurement
Immediate measurement method means that the camera of the stylus will be in direct contact with the measured object to distinguish whether it is a charged measurement method.
In the application of the immediate measurement method, the metal material of the pen camera touches the test object, and the other hand presses the immediate and accurate measurement function key (DIRECT) did not release; If the test object is electrified, the pen can be used to measure the electric current.
If the object is electrically charged, the display lamp on the stylus lights up and the display shows information on the measured voltage scale.
Generally, the stylus can display 12v, 36v, 55v, 110v and 220v. In general, the display will show the final value of the measured voltage.
Immediate measurement method (220v voltage)
2, magnetic induction measurement method
Magnetic induction measurement method means that the camera of the stylus close but not touch the measured object, the use of voltage magnetic induction to distinguish the measured object is not charged measurement method.
If the transmission line is charged, the display of the stylus will show the information voltage mark; if the transmission line is disconnected in the middle of the line, the stylus will show the information voltage mark.
If the transmission line is disconnected in the middle of the display lamp goes out, the voltage marking mark fades, indicating that the location of the existence of the disconnection.
Magnetic induction measurement method can find the disconnected part of the insulated wire, but also able to carry out the insulated wire fire and zero line to distinguish.
