What is the proper use of resistors?

Resistance is a physical quantity that in physics indicates the amount of impedance of a conductor to an electric current.

The greater the resistance of a conductor, the greater the conductor's shading effect on the current is indicated. The shading is generally different for different conductors, and the shading is a characteristic of the conductor itself. Schein resistance will lead to a change in electron flow halo, the smaller the resistance, the more electron flow

The lower the resistance, the greater the electron flow, and vice versa. Superconductors, on the other hand, have no resistance.

As a basic electronic component, resistor is widely used in various circuits, and we usually think that resistor is one of the simplest electronic components in terms of usage.

There is not much to study except the power. If I say today that many senior electronic engineers don't really know how to use this small resistor, do you believe me?

In the choice of electric sun, if you avoid the special application of high-frequency circuit, we generally only consider the power of the resistor, for ordinary electronic engineers, as long as the current flowing through the resistor to choose the right

Power, can be considered qualified, if you can take into account the instantaneous power, you can be considered a good engineer. But to reach the level of the engineer, can really use the resistor correctly, only to do these two points is

is not enough.

This circuit form has the following advantages:

1, more than one resistance can be discussed through the combination of resistance to come up with a more reasonable phase of the electric sun pretty, for example, the main application of 1.95?oeuvre than 2 oeuvre electric sun things together, if the phase directly buy a 1.95 oeuvre of the sun to save temperature

There are two 3.9 Ohm resistors convenient, because 3.9 Ohm is the standard resistance value, while 1.95 Ohm is not, and then look at the common circuit in power products, this circuit is more "odd", the figure is R4 and R5?

R6 and R7 things connected, R8 and R9 in series.

2, multiple Shen resistance more conducive to dry heat dissipation, two 1W of 2 Ou electric sun used in parallel and a 2W of 1 Ou electric sun used alone, flowing the same current, most of the time two Shen Yang used in parallel temperature rise to

Small, the resistor in high temperature conditions can withstand the power will be significantly reduced, so that the two resistors in parallel circuit will be better.