Need help On communication circuit.

[kongp]

hi,


I,m need some help about list of type of communication circuit,
I can't find complete list, from basic to advance technic. I used to
study the superegenerative circuit for long time, any can clear this
problem. Or any suggestion will welcome.


thanks you,
Phongphan Porana
phongphanp@yahoo.com

 

[Dan Bloomquist]

hi,


I,m need some help about list of type of communication circuit,
I can't find complete list, from basic to advance technic. I used to
study the superegenerative circuit for long time, any can clear this
problem. Or any suggestion will welcome.

The superregen is a solution for only one thing, cost. Without criteria
pertaining to your challenge, you will only be guided to that one depth
of knowledge, google....

 

[Michael Black]

The superregen is a solution for only one thing, cost. Without criteria
pertaining to your challenge, you will only be guided to that one depth
of knowledge, google....

No, the superregen is the solution for the faults of the regenerative
receiver. The regen was too finicky for a lot of use, going into oscillation
when it wasn't desired (because somebody moved their hand or the antenna
waved in the wind or a strong signal came on the frequency), a byproduct
of the most gain and selectivity being right on that cusp before oscillation.

So Armstrong went back to solve the problem, and came up with the
superregenerative receiver. It added other limitations, but it solved
the problem of that finicky point where the most gain occurred but which
easily slipped into oscillation. Thus the superregen worked for a lot
of applications where simplicity was desired but more "stable" operation
was needed, such as consumer equipment and equipment where no operator
was present.

Michael

 

[Dan Bloomquist]

No, the superregen is the solution for the faults of the regenerative
receiver.
???

The regen was too finicky for a lot of use, going into oscillation
when it wasn't desired (because somebody moved their hand or the antenna
waved in the wind or a strong signal came on the frequency), a byproduct
of the most gain and selectivity being right on that cusp before oscillation.

Gain yes, selectivity no.

So Armstrong went back to solve the problem, and came up with the
superregenerative receiver. It added other limitations, but it solved
the problem of that finicky point where the most gain occurred but which
easily slipped into oscillation. Thus the superregen worked for a lot
of applications where simplicity was desired but more "stable" operation
was needed, such as consumer equipment and equipment where no operator
was present.

I never said it wasn't useful. Garage door openers come to mind. Not
sure what your ramble leads to.......