And Now For Something Completely Different

R

Ron Hubbard

Jan 1, 1970
0
Does anybody know of a schematic for an amplitude modulated amplifier?
Yes, I do mean *amplifier.*


Ron
 
T

Tom2000

Jan 1, 1970
0
Does anybody know of a schematic for an amplitude modulated amplifier?
Yes, I do mean *amplifier.*


Ron

Way too unspecific. Microwatts or megawatts? Audio? RF? What's
your objective?

Find a copy of the Radio Amateur's Handbook. You should find a
plethora of schematics and general information on amplitude modulation
techniques.

Tom
 
P

Phil Allison

Jan 1, 1970
0
"Ron Hubbard"
Does anybody know of a schematic for an amplitude modulated amplifier?
Yes, I do mean *amplifier.*



** See any guitar amp schem that has a " vibrato " effect circuit included.

Fender, Music Man, Dynacord, Goldentone ......





........ Phil ;-0
 
R

Ron Hubbard

Jan 1, 1970
0
Way too unspecific. Microwatts or megawatts? Audio? RF? What's
your objective?


A while back I made a sonic screwdriver for my nephew who was, is, a
big Doctor Who fan. It used frequency modulated sound to turn screws.
But at 143 dB it was too loud and people complained when he played
with it. So I decided to redesign it, use amplitude modulated
ultrasound which is still loud, but so directional nobody can complain
about it. I figure it would be easier to amplitude modulate an [audio]
amplifier than an ultrasound oscillator.

Ron
 
Way too unspecific. Microwatts or megawatts? Audio? RF? What's
your objective?

A while back I made a sonic screwdriver for my nephew who was, is, a
big Doctor Who fan. It used frequency modulated sound to turn screws.
But at 143 dB it was too loud and people complained when he played
with it. So I decided to redesign it, use amplitude modulated
ultrasound which is still loud, but so directional nobody can complain
about it. I figure it would be easier to amplitude modulate an [audio]amplifierthan an ultrasound oscillator.

Ron


To turn screws? Really? How well did it work?
 
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