The effect of disinhibition
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Integrate several single resistors, the internal mode can be series, or parallel; Simplify PCB board design, more convenient installation, ensure SMT welding quality, reduce the volume of complete equipment
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Impedance matching. Impedance matching
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➤ Advantages: impedance matching has no effect on the signal
➤ Relation: Impedance is the vector sum of resistance and reactance
➤ The impedance of the load matches that of the internal resistance of the power supply
➤ Impedance matching between load impedance and transmission line impedance
➤ Impedance matching between load impedance and source internal resistance
➤ Impedance matching for high frequency circuits
3. The matching condition matches term
➤ The load impedance is equal to the internal resistance of the source, i.e., the argument is equal to the mode, and distortion-free voltage transfer can be achieved on the load impedance
➤ The load impedance is equal to the conjugate value of the internal resistance of the source; their modes are equal and the sum of arguments is zero. Maximum power can be obtained at the load impedance. This matching condition is called conjugate matching. If both the source resistance and the load impedance are pure resistance, the two matching conditions are equivalent
The characteristics of the exhaust resistance
The discharge resistance is directional and has the advantages of neat and less space occupied compared with the color ring resistance.
Drain pin description
The resistance between 1 and a, 2, b, 3, c, 4 and d is 10 ohms, and has nothing to do with other pins. It's just a row of resistors, made on an original.
Some have a male foot, is for the convenience of use, take a multimeter to measure it will find that the resistance value of all the feet to the public foot is nominal value, in addition to the public foot any other two foot resistance value is twice the nominal value, it is obvious that any two feet through the public foot series, application in a lot of pull-down resistance occasions convenient, such as parallel communication line, but also save space.