temperature

[lunax]

hi


I want analyze circuit RC for DIFFERENT different temperature, but in plots results nothing change. what is wrong

R2 N5 N4 0.0296
V_PULSE1I1042 N3 0 AC 0 PULSE ( 0 2.7 0 0.0001 0.0001 4 7 )
C2 N5 0 31.7
C1 0 N4 74.1781
R1 N4 N3 0.01473

**broken link removed**

thanks

 

[crutschow]

Do you have a temperature coefficient added to the R and C models?

 

[lunax]

where can I found the temperature coefficient for models RC?

 

[crutschow]

where can I found the temperature coefficient for models RC?

Depends upon the simulator you are using. It's typically part of the model definition for the R and C.

 

[MikeMl]

Duplicate Post, please remove.

 

[MikeMl]

Depends upon the simulator you are using. It's typically part of the model definition for the R and C.

From the LTSpice Help File:


R. Resistor
Symbol Names: RES, RES2

Syntax: Rxxx n1 n2 <value> [tc=tc1, tc2, ...] [temp=<value>]

The resistor supplies a simple linear resistance between nodes n1 and n2. A temperature dependence can be defined for each resistor instance with the parameter tc. The resistance, R, at will be

R = R0 * (1. + dt * tc1 + dt**2 * tc2 + dt**3 * tc3 + ...)

where R0 is the resistance at the nominal temperature and dt is the difference between the resistor's temperature and the nominal temperature.

That is why I like LTSpice. It doesn't get in the way of doing things like this by putting cutesy graphics in the user interface.