80190-380-01-R Rectifier board Packaging board SCB

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[overview] : 80190-380-01-R Rectifier board Packaging board SCB

80190-380-01-R Rectifier board Packaging board SCB

Rectifier is a rectifier device, simply said is to convert AC (AC) into DC (DC) device. It has two main functions:
First, the alternating current (AC) into direct current (DC), after filtering to the load, or to the inverter;
Second, provide charging voltage to the battery. Therefore, it also acts as a charger.
The hFE parameter of triode is related to the storage time ts. Generally, the triode with large hFE is also larger. In the past, people’s understanding of ts and measuring instruments of ts are relatively lacking, so people rely more on the hFE parameter to choose the triode.
In the switching state, hFE is usually selected with the following understanding: first, hFE should be as high as possible, in order to obtain the maximum operating current with the minimum base current, while giving the lowest possible saturation voltage, so that loss can be reduced in both the output and drive circuits.
However, if the switching speed and current tolerance are taken into account, the maximum value of hFE is limited. Second, Chinese manufacturers have tended to choose smaller hFE devices, such as hFE 10 to 15, or even 8 to 10 of the transistor was once very popular (later, due to the popular use of capacitor triggered circuit of the base circuit, hFE value has risen), hFE value is small saturation depth is small, which is conducive to reducing the heat of the transistor.
In fact, the saturation depth of the transistor is affected by Ib and hFE, so the saturation depth can also be reduced by adjusting the magnetic ring and winding parameters and base resistance Rb.

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80190-380-01-R

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