linear amplifier

Thread Starter

ol'trusty

Joined Sep 9, 2009
48
Hi guys
I am interested in building an amplifier for sine wave input from a function generator . I would like the output to be 50v and that it would work at all frequencies.
Does anyone have a link or a schematic I could look into ? maybe the gain can be adjustable ?

Hope this is possible

Thanks in advance

Trusty
 

mik3

Joined Feb 4, 2008
4,843
An op amp followed by a transistor ans with the transistor included in the feedback loop pf the op amp is an easy approach. You can have gain between a range of frequencies but not at all the frequencies. What frequencies are you interested in?
 

Papabravo

Joined Feb 24, 2006
21,228
Hi guys
I am interested in building an amplifier for sine wave input from a function generator . I would like the output to be 50v and that it would work at all frequencies.
Does anyone have a link or a schematic I could look into ? maybe the gain can be adjustable ?

Hope this is possible

Thanks in advance

Trusty
Most linear amplifiers at RF frequencies operate over a narrow bandwidth with tuned circuits. Is that what you are after?
 

Thread Starter

ol'trusty

Joined Sep 9, 2009
48
Thanks for the replys , but my knowledge might not be sufficient to understand all of the parameters. Maybe I should start with something simple that will amplify the low frequencies . maybe 1 -100 hz.
 

Thread Starter

ol'trusty

Joined Sep 9, 2009
48
How about at least being to hear the frequencies with a speaker.. can someone guide me through it or post a schematic ?
Thanks
 

Wendy

Joined Mar 24, 2008
23,429
Speakers means either 8Ω or 4Ω (or something else altogether, as speakers come in many formats and specs). You want something in the 10Hz-20Khz range, since that is around the min/max for exceptional hearing. Basically an audio amplifier.
 
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