Common Parts of Electricity Meter
Meter components of knowledge to share with you today, we look at the first meter common electric meter common components are: relay, current transformer,SMD resistor, SMD resistor, SMD triode, SMT thermistor, SMT processors, patch memory, upright varistor, infrared receiving tube, infrared tubes, lithium-ion batteries, capacitors, crystal, optical coupling, power frequency transformer and so on etc.
The relay transformer has been described in a previous article. For more details, please visit www.ivy-metering.com Below let us introduce several common Parts of smart meter for you, such as patch resistor, patch photocoupler, patch triode, light emitting tube, buzzer, thermistor.
1. SMD resistor SMD resistor
It is one of the metallic glass uranium resistor is mix uranium metal powder and glass powder, using screen printing method to print on the substrate high-power SMD resistor resistor made of moisture proof, high temperature, small temperature coefficient of surface mount technology (SMT) has been very widely used, by the proportion of SMT assembly of electronic products for more than 90%.
2. The patch of light coupling.
Photoelectric coupler (hereinafter referred to as optocoupler) is a kind of photoelectric device composed of light-emitting devices and photosensitive devices. It can realize the transformation of electric-photoelectric signal, and the input signal is isolated from the output signal.
3. Chip triode
The basic role of the SMT triode is amplification, which can amplify the weak electrical signal to a certain strength. Of course, this conversion still follows the conservation of energy, it just converts the energy of the power supply into the energy of the signal.
4. The luminous tube
The adhesive type led luminous tube surface, was born in a smaller package and factory automation and lack early manufacturers, the main factor is the surface adhesion led the first problem was unable to complete the steps under high temperature and infrared solder reflow led the heat was lower than those of IC, the temperature rise will not only cause the loss of brightness, and more than 100 degrees Celsius will accelerate the deterioration of components of led encapsulation resin can absorb moisture, the rapid evaporation of water molecules, the original packaging resin causes cracks, affect product benefits.
5. Buzzer
Buzzer is a kind of integrated structure of electronic sounder, using DC voltage power supply, widely used in computer printer, copier, alarm, electronic toy, automobile, electronic equipment, telephone, timer and other electronic products as the sound device buzzer is mainly divided into piezoelectric buzzer and electromagnetic buzzer.
6. Thermistor
Thermistors are a class of sensitive elements. They are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC) according to different temperature coefficients. They are typically temperature-sensitive and exhibit different resistance values at different temperatures.
The above is to give you some knowledge of the basic accessories of electricity meter popular science,IVY can provide a one-stop shop for the supply of BOM lists, expect to learn more details, welcome to www.ivy-metering.com
