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pbs681
Joined: 19 Aug 2004
Posts: 156
Helped: 11
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 19 Aug 2004 16:15 Pinch off current path |
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| Wondering what is the path of the current flow during pinch off(MOS)
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flyankh
Joined: 16 Feb 2004
Posts: 94
Helped: 2
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| 20 Aug 2004 3:31 Pinch off current path |
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Hi pbs681
As I know,when a MOS in pinch off,in ideal case,there will have a voltage in stead of current between source&drain:)
flyankh
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micel99
Joined: 01 Apr 2004
Posts: 34
Helped: 1
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| 20 Aug 2004 3:39 Pinch off current path |
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| When pinch off, Q drops to zero between drain and source.
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pbs681
Joined: 19 Aug 2004
Posts: 156
Helped: 11
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| 20 Aug 2004 9:08 Re: Pinch off current path |
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Hi Micel99 and flyankh,
This pinch off will happen when device at the saturation region and before the charge in the chanell can support inversion region. That's mean there is still current flow. Correct me if I wrong. I just think that the current flow maybe flow through the substrate( not the chanell) into external connection. It is like drift current for BJT. Am i right? pls comment.
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yjkwon57
Joined: 31 Jul 2004
Posts: 221
Helped: 21
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| 20 Aug 2004 11:42 Re: Pinch off current path |
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| The current flows just through the depletion region. The carriers are affected by the electric field formed by some part of Vds.
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