I didn't know where to ask this since it would be in a few areas.
I'm looking for some decent reading suggestions for getting my head around some of the uses of various parts in amplifiers.
The recent one that I have not quite understood is buffers. What they are exactly and why they are used (what problems they solve).
I'm looking for a sorta primer to get me started so I can read and understand the more technical stuff as it comes up. Right now what I end up finding is either stuff that is way over my head, or far far too basic.
I'm hoping some people here who were in this position can recommend me that middle ground books/articles and or videos that helped some of these basic topics 'click' in their head.
I'm looking for some decent reading suggestions for getting my head around some of the uses of various parts in amplifiers.
The recent one that I have not quite understood is buffers. What they are exactly and why they are used (what problems they solve).
I'm looking for a sorta primer to get me started so I can read and understand the more technical stuff as it comes up. Right now what I end up finding is either stuff that is way over my head, or far far too basic.
I'm hoping some people here who were in this position can recommend me that middle ground books/articles and or videos that helped some of these basic topics 'click' in their head.
My definition of a buffer would be a circuit that has a high input impedance (so that it doesn't load or affect whatever it connects to) and then has a low output impedance.
Typically a buffer might be a single transistor stage (an emitter follower or as many call it, a common collector amplifier) or a single opamp connected as a 'unity gain follower'. Buffers (as I think of them) have a voltage gain of 1.
Emitter Follower
Unity Gain Buffer Amplifier
Typically a buffer might be a single transistor stage (an emitter follower or as many call it, a common collector amplifier) or a single opamp connected as a 'unity gain follower'. Buffers (as I think of them) have a voltage gain of 1.
Emitter Follower
Unity Gain Buffer Amplifier
Hi,
The output stage of most amplifiers is effectively
a buffer, no voltage gain, lots of current gain.
Buffers match high impedance to low, with a gain
of 1 or slightly less than 1. An op-amp with a gain
of 3 can also do this, but its not called a buffer.
Buffers basically don't change voltage, increase current.
rgds, sreten.
The output stage of most amplifiers is effectively
a buffer, no voltage gain, lots of current gain.
Buffers match high impedance to low, with a gain
of 1 or slightly less than 1. An op-amp with a gain
of 3 can also do this, but its not called a buffer.
Buffers basically don't change voltage, increase current.
rgds, sreten.
If you're not aware of this site, Elliott Sound Products - The Audio Pages (Main Index), check it out - in particular ESP Amplifier Basics - How Audio Amps Work might be helpful ...
I'd say a general definition would be a device that allows the connection of two circuit nodes with little or no resulting interaction.
Have you looked at Horowitz and Hill's "The Art Of Electronics"? I've heard that ebook copies aren't hard to find, if you don't stumble across a paper version at a local thrift store.
Yeah that's a good resource and I have been going through it.
Yes, I was waiting for the 3rd edition before making the dive. $100 is a little steep - though not terrible for a textbook (I prefer physical books , I stare at a screen for 8 hours+ already)
Thank you all for the recommendations. The buffer thing, was only an example of the type of things I'm trying to get a better grasp of how ever the explanations by people were indeed helpful and informative.
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