Re: Will Radio Engineering be QM's worst nightmare?


"bz" <bz+sp@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:Xns9679C50C92EBFWQAHBGMXSZHVspammote@xxxxxxxxxxxxxxxxx
> curiousjohn4@xxxxxxxxx wrote in
> news:1119117816.261866.169700@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:
>
>> bz wrote:
>>> Do the math. See what kind of voltage gets produced by 150 watts
>>> applied to an infinite resistance.
>>
>> Yes, but you're thinking of something like a large inductor with
>> current going through it and then stopping the current.
>
> I am thinking of an amplifier that is turned on with no load. Not suddenly
> removing the load while it is running. In either case it can blow the
> output transistors.

I hear you on this matter.
If an RF source doesn't have a matched load the
power is reflected back to the source.
The source could be designed to withstand the
full power being reflected back but that is not
typically done in the case of power amplifiers.
It would be waste of resources to design
for that pathological case.

--
rb


.

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