For a electronic engineer designer performing simulation in their favorite EDA software (here TINA TI), there is one thing which is more annoying than solving compatibility problems arising during importing spice model written for other EDA: that thing is in fact redrawing properly the automatic symbol which is generated at the end of the importation. This project will provide a "plug and play" simulation in TINA of a voltage divider produced by a Vishay Platinum Thin Film RTD (resistance temperature detector), submitted to a voltage driven temperature change, tunable by the the user self. The simulation is provided with the appropriated imported macro, and a symbol proposal.
When the simulation (herejoined) is open, the following screen is appearing:
the RTD is a Vishay PTS1206 1Kohms with tolerance on R(0°C) (tol0) and on the slope (tolS). By default thse values are set to zero. The user can define tol0 to +/-0.3 or 0.6°C and tolS = 0.01 or 0.005 K/K
The thermal behaviour (response time to ambient change) is represented by an RC network totally tunable by the user (depending upon the ambient medium). The eventual self heating (too high current, in fact to be avoided) of the component is modeled inside the component model. The ambient temperature is modeled by the voltage source V2 here 85V thus 85°C.
The simulation is nitiaated for the component at 25°C (IC of capa C11:= -25V)
The macro describing the PTS behavior can be visualized in the netlist viewer of the device. A choice can be made there between several cases (1206/0805/0603 and different R(0°C) values)
We are going to perform a transient simulation of 30 s with activation of initial conditions
The result is as follows, for the voltage VM1 (around the PTS) and VM2 (temperature seen by the PTS)
In the future simulations, the voltage V2 can be any temperature profile generated by the user (external file or even produced by trhe circuit self).
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