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Knowledge of electronic components
Summary: The electronic components of different devices in the model and logo are not the same. In order to correctly distinguish several at once, but also to understand all their functions, this article will focus on the three aspects of electronic components from science and simple technology, – knowledge of electronic components
1. Voltage, do you know about electronic components? Current knowledge about electronic components
Voltage and current are siblings, current flows from where the voltage (level) is high to where the voltage (level) is low. Current must be produced by the presence of voltage, but the presence of voltage does not necessarily produce current – if there is only voltage and no current, it can be demonstrated that there is an open circuit (e.g. a switch in the circuit). If there is only voltage but no current, there is an interruption in the circuit (e.g. Switches in circuit). In addition, sometimes the voltage measurement is normal, but the current measurement is not necessarily normal, such as: B. the phenomenon of a small short circuit, or the resistance value component of a large phenomenon, etc., so when maintaining, the voltage should be combined with the value and current value for analysis. When testing an unknown voltage or current with a multimeter, set the gear to the maximum degree, e.g. B. to measure the value, and then gradually lower the gear.
Note: The voltage symbol is “V” and the current symbol is “A”.
Different materials have a certain resistance to the current flowing through them, and this resistance is called resistance, and the unit (component) with this physical property of total resistance is called resistance (simply a conductor with a resistance value). Its role in the circuit is very important, in computer circuit boards and peripherals this number is also very important.