Good Afternoon everyone,
I am trying to simulate a set of LED's with a total voltage drop of ~43V. I tried setting forward voltage to 43V in the modeling application for LED and it didnt work, the diode conducts 4.8V.
I then tried edditing VJ in the PSPICE model editor to 43, but now when I run bias point simulations for voltage I am getting this error "MODEL1201 is undefined" (model1201 being the diode)
any help on this? Im trying to simulate a constant current LED driver + LED pcb load. I tried simulating a constant wattage load (most useful for my application) but this seems to be impossible on my version of orcad PSPICE
any help is appreciated, thank you
https://ibb.co/B3KCZtZ
https://ibb.co/dBJ2m1y
https://ibb.co/7YHpffh
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43v forward drop is unusual value for a single diode- you may use other method to implement such voltage drop - may be a series voltage source or model an additional series impedance using behavioral devices. Or use 1020- diodes in series - each giving appox 4.2 - 2.1 voltage drop to get total 43 volts.