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.
I have a project that incorporates the measurement of very low currrent in the range of nano-amps. Could any one please assist with a suitable circuit diagram that will be capable of measuring such a quantity with precision? I mean a circuit diagram, not a device
I have a project that incorporates the measurement of very low currrent in the range of nano-amps. Could any one please assist with a suitable circuit diagram that will be capable of measuring such a quantity with precision? I mean a circuit diagram, not a device
You can use an opamp such as LMC662 and make an I to V converter with a 1G-OHM resistor.
See this: **broken link removed**
I'm not going to spend time drawing a diagram for you but they exist on the web and in the datasheet already. Use them.
Follow all the guidelines about guarding and air wiring if you want the most precision low current measurements. There will be resistor tolerances and offsets that will degrade your precision but those can be calibrated out.
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.
