Electronics &
Communication Technologies -Picoammeter
Introduction
A national research organisation is offering a technology
for picoammeter for measuring very low leakage current
of semiconductor devices, insulating materials and photo
detectors. It has four input ranges selectable through
front panel switch. The readings are obtained on 3 1/2
digit display.
First stage of the Picoammater is a current to voltage
converter. The signal is then passed through a low pass
filter and digitised to get better than 14 bits accuracy.
This consitutes the core of the Picoammeter and it is
implemented on one card alongwith 7 segment display
drive logic. GPIB interface is realised in a second
card. Dimensions of the cards are 5.9" x 6.5".
The circuit requires +5V and 15V power supplies which
are derived from 230V1 operated single power module
of size 170 mm x 85 mm x 58 mm.
Marketing of the manufactured
product: Marketing should be done by the licensee.
List of Machinery/ Equipment:
4 1/2 digit digital multimeter
Oscilloscope with 20 MHz BW
Electrical, Electronics :
Leakage current measurement of solid state devices
Photometer current
Electrical resistance of insulator
Very low current oxygen sensors
Electrical conductivity of air
pH meter
Ionisation gauges
Water contamination monitoring
Vacuum measurements
DC current measurement ranges from Picoampere to Amperes.
Bipolar current measurement referenced to system ground
Low warm up time
Portable
GPIB output port
3 1/2 digit display
Inputs Required: Raw
Materials: PCB and Chassis
Transfer Forms: Know-how;
Patent for sale; Technical assistance
Main Application: Electrical/Electronics/Telecommunications
For further
information please contact :
Technology Bureau for Small Enterprises
APCTT Building, Qutub Institutional Area
P.O. Box – 4575
New Delhi – 110016, India
