Re: NPN as RF switch
From: J M Noeding (la8ak_at_online.no)
Date: 07/09/04
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Date: Fri, 09 Jul 2004 21:52:58 +0200
On 9 Jul 2004 12:08:26 -0700, jmeyer@nektonresearch.com (Jim Meyer)
wrote:
>pdrunen@aol.com (PDRUNEN) wrote in message news:<20040708225820.04762.00001115@mb-m10.aol.com>...
>> Hi Group,
>>
>> I have a small flea power colpitt transmitter operating at 433.92MHz and a
>> Micrel "receiver on a chip" also near the colpitt transmitter receiving at the
>> same frequency. The reciever has a wire antenna and the colpitt transmitter
>> has a PCB trace antenna.
>>
>> I don't want to damage the receiver chip while I am transmitting so I was
>> thinking of putting a NPN 2N2222 device..........
>
> You don't have to worry about damaging the receiver chip with a
>"flea power" transmitter. You will have many other problems trying to
>prevent this non-existant "problem" by adding parts. You don't need
>to add anything.
>
>Jim
in my personal opinion it was an advantage de damage the receiver (and
the transmitter)
--- J. M. Noeding, LA8AK, N-4623 Kristiansand http://home.online.no/~la8ak/c.htm
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