Getting Started with a Pointer Multimeter and How to Use a Pointer Multimeter
Multimeter, also called multi-meter, tri-meter, multiplex meter, is a multi-functional, multi-range instruments, general multimeter can measure DC current, DC voltage, AC voltage, resistance and so on. It is one of the necessary instruments for electricians, and it is also a necessary measurement tool for electronic maintenance.
Pointer multimeter structure
(1) a pointer multimeter dial
The dial of the multimeter, through the knob of the conversion switch can change the pointer multimeter measurement items and measurement range, the measured value by the head of the pointer indication reading. By adjusting the mechanical zero knob can make the multimeter pointer at rest in the left zero position, ohm zero knob is in the measurement of resistance, used to make the pointer aligned with the right zero position, in order to ensure the accuracy of the measurement value
(2) The body of the pointer multimeter
Adjust the multimeter function knob can make the multimeter block in resistance AC voltage, DC voltage, DC current and transistor block between the conversion, red and black pen jacks were used to insert the red and black pens. The ohm stop adjusting knob is used to zero the ohm stop. The triode jack is used to detect the polarity and amplification factor of the triode.
Pointer multimeter diode measurement forward resistance measurement method
(1) Firstly, dial the function knob to the ohm gear, select the appropriate range and zero the ohm.
(2) will be measured diode two pins wipe clean, (https://www.dgzj.com/ home of electricians) will be the multimeter red and black pens were contacted to the two pins, so when the pointer deflection shows that the black pen connected to the diode's positive pole, the red pen connected to the diode's negative pole (because of the use of the ohm file of the multimeter battery-powered internal battery is connected to the positive pole is the positive multimeter) (Because the multimeter is powered by the internal battery, the positive terminal of the battery is the jack of the black pen, and the negative terminal is the jack of the red pen of the multimeter.) If the dial is not deflected, the two pens will be switched to measure again and can be used.
(3) reading, reading method and resistance reading method, the value measured by the table for the diode's forward resistance.
