Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

how to vary resistance by varying voltage

Status
Not open for further replies.

rameshdanas

Junior Member level 2
Junior Member level 2
Joined
Jun 4, 2007
Messages
20
Helped
16
Reputation
32
Reaction score
13
Trophy points
1,283
Activity points
1,391
How to vary resistance by varying voltage . Please share your views regarding this
ramesh
 

JFET can be used for this purpose...... JFET is operated in the linear region and its GATE voltage is varied suitably to vary its resistance because the curve depends on the Vgs and so the resistance depends on the Vg.........


to get the idea clearly check out.....
**broken link removed**
 
here is one paper about variable resistor using MOS!

may it will be helpful.
 
MOSFET can be used as a voltage--controlled,when it operate in linear area,you can get detail information from the Design of Analog CMOS Integrated Circuits by Behzad Razavi\][/i][/quote]
 
rameshdanas said:
How to vary resistance by varying voltage . Please share your views regarding this
ramesh

MOS RDS is the resistance varying with voltage
 
A transonductance Opamp (OTA) can be used as a voltage-controlled-resistor.
Take a look at pg. 11 of the National Semiconductor LM13700 data sheet.
 
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top