[SI-LIST] Re: High Speed Switch
- From: Ray Anderson <reanderson@xxxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 14 Sep 2004 17:30:50 -0700
liucathy wrote:
>Steve,
>
>I think What I need is a mechanical-like switch, which means when you
>push the button, the signal will redirect to the other path,
>functioning like the one to control bulbs. I don't know if the market
>has this kind of fast switches.
>
>Thank you
>Hao
>
>
You might want to check with the Agilent components people. About a year
ago the R&D lab people there were demonstrating some mechanical
(actually Hg) SPST switches that were impedance controlled and usable
up to about 10GHz. I don't know if they were ever productized or not.
You pulsed one input with about 18VDC for a millisecond and it switched
one way, pulsed the other input for a millisecond and it switched the
other way. No hold current required. I think it leveraged off of ink jet
technology. Instead of squirting drops of ink it squirted drops of
mercury inside the switch.
These may be overkill for your application, but I thought the technology
involed was kind of neat when it was described to me.
-Ray
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