15W Class C Audio Amplifier.

Audioguru again

Joined Oct 21, 2019
6,826
The output of a class-C audio amplifier produces only the rectified voltage of one polarity of the signal (with extremely high distortion), instead of the low distortion AC (both polarities) of the signal.

A class-C amplifier is usually used with radio frequencies.
 

BobTPH

Joined Jun 5, 2013
11,523
Like the bullhorns I mentioned. They made everyone sound like they were dying from throat cancer.

My suggestion (off the top of my head) will not produce anything like 15W. For that you would need a quite high powered input. I am guessing it would produce audible output though.
 

DickCappels

Joined Aug 21, 2008
10,661
As you can see, we are resisting helping you get a class C amplifier design because we are concerned that it would be a waste of our and your time. What sort of application do you have in mind for this amplifier?
 

MisterBill2

Joined Jan 23, 2018
27,555
TI still want to see the source of that statement about the amplifier. Something is totally wrong there. Like maybe a missing paragraph, or a stuck page.
A 15 watt class C amplifier would deliver a solid RF signal for local communications, and certainly it would be heard.
So I am not thinking that it was suggesting a class "C"AUDIO amp but rather an RF amp, for an FM signal. THAT would make sense.
 

AnalogKid

Joined Aug 1, 2013
12,142
I agree. Re-reading his posts, there is nothing explicit about this being a baseband audio amplifier.

Still no word on why he needs this.

Still no word on whether or not this is school work.

ak
 

BobTPH

Joined Jun 5, 2013
11,523
Approximately 15W single transistor audio amp. Note that the input is 11V at very low output impedance to get this.

1713636224934.png
 

nsaspook

Joined Aug 27, 2009
16,330
I agree. Re-reading his posts, there is nothing explicit about this being a baseband audio amplifier.

Still no word on why he needs this.

Still no word on whether or not this is school work.

ak
In the old RF tube era we had class C RF amplifiers for the RF carrier (the RF tuning/match network would give a nice clean sine wave output) and class B push-pull modulators for the audio.
1713638673192.png
 

MisterBill2

Joined Jan 23, 2018
27,555
In the old RF tube era we had class C RF amplifiers for the RF carrier (the RF tuning/match network would give a nice clean sine wave output) and class B push-pull modulators for the audio.
View attachment 320375
Post 3 states "a 15 watt amplifier must be connected to the radio to produce sound". That implies audio to me.
BUT it may be a translation error. It might be saying "Signal", which could also be RF. And the term "Radio" could mean Radio TRANSMITTER.
BUT given that the TS is not telling us the source of the statement, I am not willing to provide any more help.
 
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