Constant voltage (CV) and current limit (CL) modes
Digital voltage and current meters
Output tracking
Keithley 487 Picoammeter/Voltage Source*
Designed to measure low current and high resistance
500V source
10 fA resolution
Keithley 485 PicoAmmeter*
4.5 digit resolution
100 fA sensitivity
Up to 2mA DC current
Partial support for the
equipment in this lab was provided by the National Science Foundation's Course,
Curriculum and Laboratory Improvement Program under grant DUE-0088489 (asterisk
denotes specific items).