Current-to-Voltage Conversion


The output from many detectors is a current (some number of electrons / second). It is desirable to convert this current signal to a voltage to avoid capacitive charging effects. The simplest way to do so is to drop the current across a load resistor and measure the voltage.

Schematic of a I to V conversion using a resistor:

This simple current-to-voltage converter has some disadvantages that can be avoided by using an op-amp.

Further Information

Science Hypermedia Home Page

Copyright © 1996 by Brian M. Tissue

updated 2/22/96