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.
In the part-schematic down below which I have found I have a split supply but also an op-amp to create this, can someone tell me why you use this op-amp at all?
If the plus current and the minus currents drawn from the supply are near equal (meaning little net ground current) than you can get by with just a voltage divider for the virtual common. If there is a significant difference, then you need the op amp to absorb the difference (the ground current).
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.
