Circuits components and safety functions

In summary, in a practical power circuit, there are typically five fundamental components or functions: diodes, capacitors, resistors, transistors, and a power supply. These components work together to convert electrical power from one type to another. In addition, there are safety functions such as a fuse and possibly a transformer or potentiometer. Other important components that may be present include switches, LEDs, and integrated circuits. It is important to note that the type of transistor used, whether NPN or PNP, can affect the circuit's function. Finally, FETs and MOSFETs may also be used in power circuits.
  • #1
amrisha16
8
0
5 fundamental circuit components or functions and what are some safety functions that are performed in most practical power circuits?

thanks:)
 
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  • #2
amp18.gif


Can you name ANY of the components in the above circuit diagram?
 
  • #3
diodes capacitor resistor ground transistor power supply
 
  • #4
Ground is a component? When did 'power supply' become a component? It is a collection of components usually used to convert one type of electrical power into another.
 
  • #5
well i know that.. i just decided to add that in...
 
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  • #6
Good.

Yes, all except the power supply are components.

The power supply is more like the function of the components in the lower circuit, just like the top circuit is an amplifier.

You could add switch, transformer, LED, potentiometer (also a trim pot which is often a screwdriver adjustment) , integrated circuit, electrolytic capacitor.

It would not be unusual to find a fuse in series with the power switch.

Note that some of the transistors are NPN while others are PNP. You can tell by which way the arrow is pointing on the emitter symbol. Q1 and Q4 are NPN and the others are PNP.

Not shown are FETs and MOSFETs which are also important.
 
  • #7
ok thanks for the help.. :) big time...
 
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1. What are the main components of a circuit?

The main components of a circuit are a power source, conductors, load, and switches. The power source supplies the energy needed to run the circuit, conductors carry the electric current, load is the device that uses the electric energy, and switches control the flow of current.

2. What is the purpose of a resistor in a circuit?

A resistor is used to limit the flow of current in a circuit. It is often used to control the amount of voltage that reaches a specific component or to prevent damage to the circuit.

3. How do capacitors help in circuit protection?

Capacitors store and release electric charge, which helps to stabilize voltage fluctuations in a circuit. They can also act as a temporary power source in case of a power outage or to keep a circuit running smoothly.

4. What is the role of a fuse in a circuit?

A fuse is a safety device that is designed to break the circuit and stop the flow of electricity if the current exceeds a certain level. This helps to prevent damage to the circuit and potential hazards such as fires.

5. How do ground fault circuit interrupters (GFCIs) work?

GFCIs are designed to protect against electric shocks by constantly monitoring the flow of current in a circuit. If there is an imbalance or a leakage of current, the GFCI will quickly shut off the power to prevent harm to the user.

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