The difference between voltage source and current source. Voltage source and current source differ by only one character in their names. HE HE. Some friends do not understand this very well. So I will explain it here. And use software simulation to introduce the working principle in detail. And precautions. Below are the symbols of voltage source and current. The left side is the current source, and the right side is the voltage source. Voltage source. Voltage source is actually a kind of power source that we often use. For example, batteries or self-made voltage regulator circuits. Generally, they belong to voltage sources. The characteristics of voltage sources are: The output end can be open-circuited, but not short-circuited. In short, the output voltage of the voltage source is constant. For example, the output voltage of a 5V voltage source is 5V. The current will change with different loads. For example, add a 1 ohm load to a 5V voltage source. The current flowing through is 5/1=5A. If the connected resistance is 2 ohms, the current flowing through is equal to 5/2=2.5A. I believe everyone can do this simple calculation. Current source. The difference between current source and voltage source is quite large. The output end of the current source cannot be open-circuited, but can be short-circuited. Why can\'t it be open-circuited? HE HE... because the circuit is open... the voltage output by the current source is infinitely high... (actually, the voltage also has a certain value) In short, the output current of the current source is constant. No matter the size of your load... even if you short-circuit, its current remains unchanged. What changes is the voltage... For example, a 1A constant current source... if you connect a 1 ohm load... its output voltage is 1x1=1V... when you connect a 10 ohm resistor... it outputs 1x10=10V voltage...
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