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.

thermocouple circuit needed

Status
Not open for further replies.

carrier

Full Member level 5
Joined
Apr 14, 2001
Messages
240
Helped
22
Reputation
40
Reaction score
12
Trophy points
1,298
Location
Iran
Activity points
1,688
thermocouple at nhsouth

hi
I want to design a circuit to read and amplify the K or J type thermocouple with simple opamp (not use special IC such as AD595 or etc.)
thanks
 

IanP

Advanced Member level 5
Joined
Oct 5, 2004
Messages
7,942
Helped
2,309
Reputation
4,620
Reaction score
531
Trophy points
1,393
Location
West Coast
Activity points
66,435
This is a minimal thermocouple schematic. An op amp amplifies the tiny voltage that is created when one of the two thermocouple wire junctions is hotter than the other.
As opamp you can use the very popular CA3130/CA3140 ..
Another example ( https://www.nhsouth.com/crafts/workbench/thermocpl.htm ) shows you practical application of thermocouple/opamp(s) based temperature control circuit ..

Regards,
IanP
 

carrier

Full Member level 5
Joined
Apr 14, 2001
Messages
240
Helped
22
Reputation
40
Reaction score
12
Trophy points
1,298
Location
Iran
Activity points
1,688
any one have a circuit for use thermocouple.
this circuit join with termistor.
thanks
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top