Article View: sci.electronics
Article #14875Re: Tube primer?
From: Dave Turner
Date: Fri, 20 Nov 1992 01:03
Date: Fri, 20 Nov 1992 01:03
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In article <1992Nov19.212057.29180@mav.com> toddi@mav.com (Todd Inch) writes:
>>circuit also -- emitter is like cathode
>> base is like grid
>> collector is like plate.
>
>Except applying voltage to the grid decreases current flow from the cathode
>to plate while applying current to the base of a NPN (BJT) increases the
>collector-emitter current. So, a tube works more like an FET from a practical
>standpoint.
That should read: "applying *negative* voltage" to the grid decreases current
flow....
Applying positive voltage to the control grid will increase current flow.
--
Dave Turner (510) 823-2001 {att,bellcore,sun,ames,decwrl}!pacbell!dmturne
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<1992Nov20.010322.2585@ptsfa.PacBell.COM>Path:
arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnewsk!cbnewsj!att-out!pacbell.com!ptsfa!dmturneReferences:
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnewsk!cbnewsj!att-out!pacbell.com!ptsfa!dmturne From: dmturne@ptsfa.PacBell.COM (Dave Turner) Subject: Re: Tube primer? Reply-To: dmturne@PacBell.COM (Dave Turner) Organization: Pacific * Bell, San Ramon, CA Date: Fri, 20 Nov 1992 01:03:22 GMT Message-ID: <1992Nov20.010322.2585@ptsfa.PacBell.COM> References: <1992Nov06.234842.190001@zeus.calpoly.edu> <1992Nov14.073048.5200@weyrich.UUCP> <1992Nov19.212057.29180@mav.com> Lines: 20