--- In LTspice@..., "mase723777" <mimmo_renato@...> wrote:
Dear all,
I am new to LTspice and electricity(my dad is my teacher), I was looking on google how to add a photo transistor. The only useful thing I found was to add a Photo coupler. I tried this in a circuit with a n-Channel mosfet and it was successful. But when I want to change the parameters of the Photo coupler it gives me a notification it is not possible. How can I override this?
Many thx. for your feedback,
Kr,
Renato
Hello Renato,
Nearly all symbols in the LTspice library are intentionally
made as specific symbols. This prevents that users corrupt
their database.
One can modify this symbol to allow to change the parameter
Igain for example.
I have made a new symbol PC817.asy for you. Please try my example.
Files > Temp > PhotoTransWithMOSFET.zip
Its best practice to copy this symbol into every folder where
you have a schematic using this new symbol.
Best regards,
Helmut
