I've seen a lot of different definitions of bootstrapping, so what does it actually mean? I've seen the term used to describe a component or device used to pull up the voltage on a node for startup purposes. I've also seen it used to describe the technique of pulling up the operating point of a MOSFET. I've ALSO seen it used to describe the technique of using positive feedback to increase the input resistance of the feedback amplifier. So which is it, all of them?
Also, if you have a negative feedback amplifier, the input resistance is boosted by Rin(1+bA). So how does positive feedback increase the input resistance?
Thanks in advance!
Also, if you have a negative feedback amplifier, the input resistance is boosted by Rin(1+bA). So how does positive feedback increase the input resistance?
Thanks in advance!