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.

Register Log in

problem in interfacing lm335 temprature sensor with lm741

Status
Not open for further replies.
A

a4speaker

Newbie level 5
Joined
May 12, 2008
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,341
lm335 schematic

hi
i'm stuck in quite a simple problem. what i have to do is just take output voltage from lm335 temperature sensor and subtract 3 volts from it using lm741 subtractor.
the problem is:
when i measure LM335 sensor output standalone(not connected to subtractor circuit) it works fine and shows voltage change with temperature. but when i connect its output with lm741 subtractor, its output remains constant with temperature.can anybody help me about whats wrong?
thanx in advance
 

lm335 temperature sensor

It sounds like your substractor circuit is not working correct. Did you consider LM741 common mode range? It isn't a rail-to-rail amplifier and needs a negative supply voltage.
 

lm335 temperature

ok i'm attaching the schematic
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top