MCGO

기기명 (Instrument) :  Programmable Current Amplifier (전류 증폭기)

제작회사 (Manufacturer) :  KEITHLEY (키슬리)

형식 (Model) :  428

세부내용 (Description) : 

Product Overview

The Keithley 428-PROG Programmable Current Amplifier converts fast, small currents to a voltage, which can be easily digitized or displayed by an oscilloscope, waveform analyzer, or data acquisitionsystem. It uses a sophisticated "feedback current" circuit to achieve both fast rise times and sub-picoamp noise. The gain of the Keithley 428-PROG is adjustable in decade increments from 103V/A to 1011V/A, with selectable rise times from 2μs to 300ms.

Features and Specifications of the Keithley 428-PROG Programmable Current Amplifier include:

·         Applications in research and device labs due to its cost-effective ability to amplify fast, low currents, incude:

o    Biochemistry Measurements:  Ion channel currents through cell walls and membranes

o    Beam Position Monitoring:  Used on electron storage rings and synchrotrons

o    Surface Science Studies:

§  Scanning Tunneling Electron Microscope system amplifier

§  Observation of secondary electron emission, as in X-ray and beam line currents

o    Laser and Light Measurements: 

§  Fast, sensitive amplifier for use with PMTs and photodiodes

§  Analysis of fast photoconductive materials

§  IR detector amplifier

o    Transient Phenomena:

§  Current DLTS studies

§  Breakdown in devices and dielectric materials

·         Can be connected to an oscilloscope or waveform digitizer to display very low currents in real time

·         Offers fast response at low current levels

·         Nine current amplification ranges allow the greatest flexibility in making speed/noise tradeoffs

·         Can be used with any of Keithley’s data acquisition boards to implement a very cost-effective, low current measurement system with wide bandwidth and fast response

·         Incorporates a second order Bessel-function filter that minimizes noise without increasing rise time on high-gain ranges

·         Input and output connections are made with BNC connectors:

o    INPUT HI is connected to a programmable ±5V supply

o    Permits suitable bias voltages to be applied to devices-under-test or current collectors

o    This eliminates the need for a separate bias supply

·         Exterior design incorporates:

o    Front panel operation

o    Pushbutton controls have an LED to indicate if that function is activated

o    Display features three selectable intensities (bright, dim, and off) for use in light-sensitive environments

o    All setup values can be displayed from the front panel

·         2μs rise time

·         1.2fA rms noise

·         Up to 10^11 V/A gain

·         IEEE-488 interface

첨부 (Attach)

   파일내용 (The content of file) : 

     -. Data Sheet (데이터시트) :

     -. Technical Document (기술문서) :

     -. Quick Reference Guide (빠른 참조 가이드) :

     -. Intruction Manual (사용설명서) :

   사진 (Picture)  :