Re: Electronic SPDT switches


"Mark Fergerson" <nunya@xxxxxxxx> wrote in message
news:Y%NBf.12778$jR.1214@xxxxxxxxxxxxx
> Abstract Dissonance wrote:
>
>> "Rich Grise" <richgrise@xxxxxxxxxxx> wrote in message
>> news:pan.2006.01.24.20.52.34.894684@xxxxxxxxxxxxxx
>>
>>>On Mon, 23 Jan 2006 18:30:10 -0600, Abstract Dissonance wrote:
>
>>>>I was thinking if it would be possible to create a completely
>>>>electronicly
>>>>controlled SPDT switch using the following method:
>>>>
>>>>create a conductor that looks like the following
>>>>
>>>> /-------
>>>> B /
>>>>A------<
>>>> B \
>>>> \-------
>>>>
>>>
>>>Check http://www.ee.washington.edu/stores/DataSheets/cd4000/cd4066.pdf
>
>> But these are based on semiconductor methods and not electron ballistics?
>> I'm specifically talking about using electronc ballistic methods.
>
> So what? Whether you focus on the contacts (electrodes) or the crossbar
> (vacuum/bulk), a switch is a switch.
>

not really. I'm not interested in switching but just the concept. A big
difference. I didn't ask how to switch anything but if it was possible to do
it the way I described.
>> say I have a gas chamber with two anodes and one cathode and an external
>> electric field... I Should be able to determine with anode I would like
>> the current to flow to by controlling that field. Replace the gas with a
>> conductor and it should probably work too(maybe not though).
>
> How about magnetic instead of electric field as in Hall effect?
>

I suppose that would work since a magnetic field would extert the same
force(but would just have to rotate it 90 degree's.

>> I'm not trying to come up with some new switch but just wondering if it
>> would work or not and if there was anything like it(not the switching
>> itself but the method)...
>
> Hall effect A/B switch? Probably insufficiently sharp switching action
> (too leaky) to be practical or somebody'd be selling them by now.
>
>

probably. I figured that since most electrons are going about the same
speed in a conductor that it wouldn't be to hard. I'm not saying its
practical or anything but was just wondering if it was possible to do... I
suppose I could build one or something but I got otherthings to do at the
moment.

> Mark L. Fergerson
>

AD


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