How to measure current and diodes with a digital multimeter
Conventional digital meter no matter what gear measurement, the black pen end of the meter should always be inserted in the com hole, the red pen end of the meter according to the actual measurement with the gear flexible mobilization.
First of all, the current measurement, this table dca four gears correspond to measure four different levels of DC current. Take 200ma as an example, if the estimated current to be measured is greater than 20ma and less than 200ma, dial to this position and insert the red pen end into the vra hole. The red and black pen measuring end is connected in series to the measured circuit, the screen shows the digital value of the current value of the measured circuit, and the other three gears are similar. If the estimated current under test is between 200ma and 10a, set the gear to 10a, the red pen end is inserted into the 10a hole, the red and black measuring ends are connected to the measured current loop, and the displayed figure is the measured current.
Plus measure the diode, gear as shown dial to diode labeling gear, red pen end inserted vra, with red and black pens across the measured diode ends, if the display is between 0.4 and 0.8, red and black pens opposite, and once again across the measurement, the diode is shown to be a high level of 1, the first time measured for the diode forward voltage drop, indicating that this diode is good. If the two measurements are less than 0.8 or are displayed 1, indicating that the diode has broken down or can not conduct.
Finally, the measurement of capacitance, dt830 does not have this function, for the support of capacitance measurement of digital table, gear labeling graphic is generally c, select the appropriate gear, gear outside the general two cx special capacitance jacks, will be measured capacitance poles inserted, the table shows the number of capacitance value that is measured.
Multimeter routine measurement if engaged in related occupations after. Soon be able to skillfully use, the difficulty will not be too great.
