1. A switch is a electrical devices which use in closing-opening the electrical circuit.
2. A Fuse is a electrical devices which used to prevent a short circuit in electrical circuit.
3. A rainproof is a electrical protection which used to prevent water from entering the electrical device or circuit.
4 .The overload is a electrical problems which the device is working beyond capacity.
5. A circuit is a electrical devices which the passage of electric current and is equipped with electrical devices.
6. A breaker is a electrical devices which used in control circuit.
7. The short circuit is a electrical problems which caused a short circuit due to circuit failure.
8. A switchboard is a electrical devices which used to hold the switch control circuit.
9. A cable is a electrical devices which used as a conductor by an electric current to flow along the line.
10. A ground is a electrical devices which used to solve the problem of leakage of electricity.
งานที่ 4.2
1. Transistor are the key component in electronics.
2. They consist of three layers of silicon semiconductor.
3. All electronic systems consist of input, a processor and output,and usually memory.
4. The input receiver and converts information while the output convert and supplies electronically processed information.
5. The memory may not be present in simple system,but its function is the storage of information for the processor.
6. Continual developments in electronics give us increased reliability in electronic.
7. Electronics equipment controls microprocessors in,for example,weapon systems,cellular, radio,telephone systems and domestic appliances.
8. Electronics devices have improved our lives by providing high quality communication and entertainment.
งานที่ 4.3
Complete the text about electronics by choosing a word from the box.
(diodes , semiconductor , electrons , devices , germanium , transistors , integrated circuits , capacitors , silicon , integrated , resistor)
Electronic circuits are built from basic components. Semiconductorare the most important components. They can be used to amplify the strength of a signal by converting a weak signal into a stronger one or to switch other circuits on or off. Resistor reduce the flow of transistor through the circuit, adding resistance to that circuit. Diodes function as electronic valves allowing current to flow in only one direction. Capacitor store electricity in order to smooth the flow. They can be charged and discharged. The two most common capacitors are ceramic and electrolytic. Most electronic devices useintegrated circuits (IC) or microchips. Inside an IC is a very small piece ofsilicon with circuits built in. Today, semiconductors are usually made of silicon which is cheaper and easier to manufacture than germanium . Researchers are constantly trying to reduce the size of transistors in order to reduce the size of devices.
(diodes , semiconductor , electrons , devices , germanium , transistors , integrated circuits , capacitors , silicon , integrated , resistor)
Electronic circuits are built from basic components. Semiconductorare the most important components. They can be used to amplify the strength of a signal by converting a weak signal into a stronger one or to switch other circuits on or off. Resistor reduce the flow of transistor through the circuit, adding resistance to that circuit. Diodes function as electronic valves allowing current to flow in only one direction. Capacitor store electricity in order to smooth the flow. They can be charged and discharged. The two most common capacitors are ceramic and electrolytic. Most electronic devices useintegrated circuits (IC) or microchips. Inside an IC is a very small piece ofsilicon with circuits built in. Today, semiconductors are usually made of silicon which is cheaper and easier to manufacture than germanium . Researchers are constantly trying to reduce the size of transistors in order to reduce the size of devices.
0 ความคิดเห็น:
แสดงความคิดเห็น