What is the function of resistance introduced by the glaze resistance manufacturer
2026-01-31
What is the function of resistance introduced by the glaze resistance manufacturer
1. Glazed resistor current limiting: To ensure that the current passing through the electrical appliance does not exceed the rated or specified value required for actual operation, and to ensure the normal operation of the appliance, a variable resistor can usually be connected in series in the circuit. When the size of this resistor is changed, the magnitude of the current will also change. We refer to this type of resistor that can limit the amount of current as limiting current.
2. Diverter: When several appliances with different rated currents need to be connected simultaneously on the main circuit of the circuit, a resistor can be connected in parallel at both ends of the appliance with a smaller rated current. The function of this resistor is to divert current.
3. Divided by glaze resistance voltage: Generally, electrical appliances are marked with the rated voltage value. If the power supply is higher than the rated voltage of the appliance, the appliance cannot be directly connected to the power supply. In this case, a series of electrical appliances can be connected to the appliance. A resistor with an appropriate resistance value can share a portion of the voltage, allowing the appliance to operate at rated voltage. We call this type of resistor a voltage divider.
4. The glazed resistor converts electrical energy into internal energy: when current passes through the resistor, all (or part) of the electrical energy will be converted into internal energy. Electrical appliances used to convert electrical energy into internal energy are called electric heaters. Such as electric soldering iron, electric stove, rice cooker, heater, etc.
The glaze resistor manufacturer has informed everyone of the preventive measures
Before use, check the resistance. Checking its performance means measuring whether the actual resistance value is consistent with the nominal value and whether the error is within the allowable range. The method is to measure with the resistance range of a multimeter.
Pay attention to two points when measuring
1. Determine the range based on the measured resistance value, so that the pointer points to the middle of the scale line for easy observation.
2. After determining the resistance range, it is necessary to zero it. The method is to short-circuit the two probes (directly in contact with each other), adjust the "zero adjustment" device, so that the pointer accurately points to "0" on the Ω scale line, and then measure the resistance. resistance. In addition, please be careful not to touch the end of the resistor or the metal part of the probe with your hands. Otherwise, it may lead to testing errors.
Resistance: As the name suggests, it increases the resistance to the passage of current. Just like putting things in a canal, it can also prevent the smooth flow of water.
1. Limit the amount of current passing through to achieve current limiting effect.
2. In a series circuit, it acts as a voltage divider. Due to the size and combination of resistors used (in series or parallel), it can act as a boost and buck.
3. In parallel circuits, it can serve as a shunt.
Of course, these are the basic principles of capacitors and resistors. But the role played in the circuit is constantly changing. We can measure the salinity of seawater by measuring its conductivity. It is also possible to indirectly infer the underground engineering geological structure by measuring changes in the Earth's resistivity simultaneously. In short, there are still many unknown spaces waiting for us to work hard, explore and develop in the application and development of resistors.
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