Introduction of resistance gear of digital multimeter;
One of the methods that can be used to judge the quality of resistors, diodes, and triodes. When the actual resistance value of the resistor deviates too much from the nominal value, it will be damaged. For two or three diodes, if the resistance between any two pins is not a large value (a few hundred K or more), it can be considered that the performance is degraded or has been broken down and damaged. Note that this transistor is not band-impeded. This method can also be used for the integrated block. It should be noted that the measurement of the integrated block can only be compared with the normal parameters.
4. The test pens of ordinary multimeters have a large resistance value. Interested enthusiasts can make a pair of test pens by themselves; Method: Prepare a high-quality speaker wire or multi-core copper wire of about one meter, and a pair of clips with insulating sleeves (red Black), a pair of banana plugs (red and black) for speaker wiring; one end of the wire is welded firmly on the clip, and the other end is connected to the banana plug accordingly; a pair of excellent test leads is done.
