Resistor Frequently Asked Questions
Time:2017-05-04 11:30Source: the stationClick:
Resistors are the most expensive components of electrical equipment, but are not the most damaged components. Resistance damage to open the most common, open, most of the performance will be large resistance, electrical equipment in the common carbon film resistance, metal film resistance, wirewound resistance and several kinds of insurance resistance. The first two kinds of resistance is the most widely used, the damage characteristics of a resistance below 100k, and the resistance below 100k.
The probability of failure occurs, and the resistance in the hundreds of Europe to tens of thousands of euros, they are very few failures; bottom resistance after the failure of the resistance is shown to be black, and high resistance in general No external performance, cylindrical wirewound resistance failure for the performance of rupture and black, wirewound resistors are generally used as a high current limit, the resistance is not. Cement resistance is a kind of wirewound resistance, when burned
May be broken, otherwise there is no visible traces. Insurance resistance burned when some of the surface will blow up a piece of skin, and some have no trace, but never burned black.
This is the resistance when the failure of the performance of some of the features, when you use or test the resistance, you can according to the above characteristics to determine whether the resistance is a problem, it can be very quickly to help you find the circuit The cause of the failure, one by one.
Capacitance in the event of damage to the performance of external grease, the general performance of the two ends or the middle of the bulging shape.
Severely damaged capacitors are hot when the system is started, and this capacitor should be replaced immediately
Electrolytic capacitors rely on the inside of the electrolyte to work, long hours of work and baking will make the inside of the electrolyte to reduce or even dry, should check the high-power components next to the electrolytic capacitor