Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
As you know, in this case, the gain, Gv = V(out)/V(in+), is:
Gv = 1 + R2/R1
where
R1 is the resistance between in- and ground
R2 is the resistance between in- and output
Another approach:
Due to the very high gain, Gopen = V(out) / [ V(in+) -V(in-) ], of an opamp, the difference voltage at its inputs, V(in+) - V(in-), is close to zero since V(out) is usually a few volts only.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
