Which graphics Card to select?

[IPDO]

I need to know about current,
Increase in power will lead to increase in current and hence high current will pass through the computer components which may damage the computer.
Whats your opinion!!!

[Calum]

A higher wattage power supply doesn't draw that wattage all the time - just the wattage your PC needs.  So, if your PC currently draws, say, 150W, and you replaced your 200W PSU with a 1200W PSU, it would still only draw 150W (possibly slightly higher depending on efficiency).
I would get at least a quality 450W PSU.

As I already said, computer power supplies don't work like that.  Components only draw the power they need.

[IPDO]

thats the power, explain in terms of current?

[Calum]

Replace power with current if you like.  All components draw specified voltages from specific individual wires on the connectors - they draw 3.3V, 5V or 12V as needed.  If they need more power, they draw more amps (current).  Current is drawn rather than "pushed", so it doesn't matter how many amps the power supply can supply, the components will only draw what they require.

[IPDO]

If that is the case then why do we say that "The transistor or the Diode is damaged due to high current/voltage".

[Calum]

That would be due to something failing rather than the PSU being able to supply more current than the device can handle.

[IPDO]

Brother, Increase in current will led to shifting of Operating position of a device, say Transistor for CE configuration if Ic and Ib increases then Q point shifts and crosses the breakdown boundary and then the transistor will get damaged.

[Calum]

I understand.  But believe me, you can use a power supply rated as high as you want without any fear of damage.  If your PC draws 150W, you can use anything above that rating.  Otherwise, you'd have to buy an exact sized PSU for each individual system - if your system drew 153W under load, anything above that would damage it, surely...and when it was idle, drawing 50W, that exact same 153W PSU would damage it.

[IPDO]

How is that possible. Then, PSU has some features that is doing all these. Please explain the PSU features.

I want to know how PSU works?

Sorry for taking you to Electrical's but you need to prove it that you are correct!!!!!

[Calum]

Think about it.  Do you expect that your computer, as it stands, just draws 200W (the power supply's rating), whether it's sitting there doing nothing or under full load doing intensive computing?  It doesn't.  The power supply regulates its output, and supplies only what is needed.  This is pretty much a basic function of most power supplies, not just computer power supplies.
I'm not an electrical engineer myself so I can't fully explain how this is done, I couldn't tell you which components in a PC power supply do this or how they do it without literally just Google searching it.

[Computer_Commando]

Brother, Increase in current will led to shifting of Operating position of a device, say Transistor for CE configuration if Ic and Ib increases then Q point shifts and crosses the breakdown boundary and then the transistor will get damaged.

This is beginning to sound like homework, which we don't help with.

How is that possible. Then, PSU has some features that is doing all these. Please explain the PSU features.

I want to know how PSU works?

Sorry for taking you to Electrical's but you need to prove it that you are correct!!!!!

Sounds like more homework.  Proof?  How about 2 degrees in Electrical Engineering & too many years of experience, which I don't intend to detail here?

[IPDO]

hmmm. It seems Commando can tell something about PSU.

Anyhow, I think i need to agree with Calum for the logic he stated.
Need to Discuss with my Teachers.
I will come back and let you know.

[Computer_Commando]

hmmm. It seems Commando can tell something about PSU.

Anyhow, I think i need to agree with Calum for the logic he stated.
Need to Discuss with my Teachers.
I will come back and let you know.

Use Google...teach yourself...impress your  teachers.
CC

[patio]

I predict a 5 page thread...

[IPDO]

I cleared my Doubt and Calum was right.
I am correcting myself:

Brother, Increase in current will led to shifting of Operating position of a device, say Transistor for CE configuration if Ic and Ib increases then Q point shifts and crosses the breakdown boundary and then the transistor will get damaged.

Ic is dependent on Ib and Ib is dependent on [Vcc,Vbe,Rb,Hfe]; Here Vcc and Vbe are constant; Hfe depends on manufacturer and hence it is also a constant and let Rb is a fixed resistance. From all of this, all are constants and Hence no Change in Ic even increase in current.

If that is the case then why do we say that "The transistor or the Diode is damaged due to high current/voltage".

The Transistor or Diode is Said to be Damaged when Short Circuited and that WE DON'T DO THAT.

How is that possible. Then, PSU has some features that is doing all these. Please explain the PSU features.

I want to know how PSU works?

Sorry for taking you to Electrical's but you need to prove it that you are correct!!!!!

Its not any special component doing this, it is the basic Electrical's  See attachment.

And that helped us all and Sorry for any inconvenience caused.
Thanks.

[recovering disk space, attachment deleted by admin]