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• 15

  2021-12

  Electric strength of solid insulation

  As we all know, the electrical strength of solid insulation is far greater than the electrical strength of air; the insulation distance through solid insulation materials is usuall···

• 11

  2021-12

  Ways to eliminate interference

  Some basic anti-jamming methods available are as follows: 1. Shield; 2. Grounding; 3. Balance; 4. Filtering; 5. Isolation; 6. Separation and positioning; &n

• 25

  2021-10

  Shielding effect of coaxial cable

  Coaxial cable is a commonly used shielded cable that can suppress electromagnetic leakage of transmitted electrical signals and shield electromagnetic interference in abnormal envi···

• 14

  2021-10

  The heating problem of stepper motor and its treatment

  (1) Why does the stepper motor heat up? For various stepping motors, the interior is composed of iron core and winding coils. The winding has resistance, and power will produce los···

• 08

  2021-09

  Noise source in the circuit

  All electrical signals except useful signals in the circuit are noise. This definition does not apply to distortion caused by non-linearity in the circuit. Although these distortio···

• 01

  2021-07

  Features of high frequency heating

  High-frequency heating is also called "dielectric heating". Under the action of a high-frequency electromagnetic field, the material absorbs electromagnetic energy and co···

• 25

  2021-06

  Leakage current and insulation resistance

  The principle of measuring leakage current and the principle of measuring insulation resistance are essentially the same, and the nature of detecting defects is also roughly the sa···

• 15

  2021-06

  Factors affecting insulation resistance

  1. The influence of temperature The temperature of the power equipment in operation will change with the surrounding environment, and its insulation resistance will also change wit···

• 07

  2021-06

  Electric strength of combined insulation

  There are many requirements for the insulation of high-voltage electrical equipment. In addition to excellent electrical properties, it also requires good thermal, mechanical and o···

• 04

  2021-06

  Low temperature measurement

  The low temperature measurement in the cryogenic system mainly includes temperature measurement, vacuum measurement, liquid level measurement and flow measurement. The internationa···

• 22

  2021-05

  Breakdown of solid media

  Under the action of an electric field, the breakdown of solid media may be caused by electrical processes (electric breakdown), thermal processes (thermal breakdown), and electroch···

• 20

  2021-05

  Ways to improve the electrical strength of gaseous media

  In order to reduce the size of power facilities, it is always desirable to make the air gap length or insulation distance as small as possible. For this reason, measures must be ta···

• 11

  2021-05

  How to choose a thermocouple?

  Thermocouple is the most common contact type temperature measuring element, which occupies a very important position in the field of temperature measurement. In order to cope with ···

• 26

  2021-04

  D-SUB connector overview

  D-SUB connector, DB connector for short, is a large type of rectangular connector, which is a standard for the interface shape and structure of electrical connectors. D-SUB connect···

• 12

  2021-04

  Can ordinary connectors be used for thermocouples?

  Thermocouple connector, we refer to the connector specially made to transmit thermocouple signal. We have found that many people just use ordinary connectors because they don’t und···

• 27

  2021-03

  How to choose vacuum connector for vacuum heating equipment?

  Vacuum connectors have several important technical parameters, namely, vacuum leakage rate, working temperature range, signal type and quantity, working voltage and current, etc. T···

• 23

  2021-03

  Design principle of vacuum heating equipment

  Because the air in the vacuum is very thin, the heating under the vacuum mainly relies on heat conduction and heat radiation. Heating is carried out in a vacuum chamber. The comple···

• 13

  2021-03

  The influence of temperature on current carrying capacity

  The current carrying capacity refers to the current value that can be carried in the conductor, and generally refers to the current value in normal operation. Generally, it is rela···

• 12

  2021-03

  The principle of infrared temperature measurement

  Objects above absolute zero (-273°C) will radiate infrared energy of different wavelengths. Infrared thermometers can capture the infrared energy radiated from all objects. Infrare···

• 11

  2021-03

  How can thermocouple and thermal resistance measure temperature accurately?

  Thermocouples and thermal resistances are the most common temperature measurement components, and they are all contact temperature measurement, so the probe must be able to quickly···