Hi all, this is a follow up to this thread I posted on the Power Electronics Forum:
https://forum.allaboutcircuits.com/threads/power-good-and-source-disconnect-mosfet-question.167699/
The goal is to have a visual representation of the state of a circuit: tripped fuse or not tripped.
I took @AlbertHall's suggestions into account and simplified the design by referencing the non inverting input to ground and the inverting input to the voltage after the fuse. So that Vout is low in regular operation and higher when V2 and V1 are closer to each other to power the red LED on.
I've also put in an Op-Amp with V+ and V- terminals (LM741) to try and think about power supply (I've only used ideal OpAmps in my simulations so far).
In the environment I want to use this in, I have a readily available voltage source regulated at 26.5V. I'm trying to use that to provide a steady voltage to V+ through a resistive voltage divider. In the current simulation V+(fault) is over 10V and V+(good) is under the 22V which are the limit values of the LM741 per TI's spec sheet.
I've read on this forum and elsewhere that the LM741 is super obsolete and I was wondering if anyone had any recommendations for an OpAmp I could order or a kit/series that could play nice in this configuration so I order the right parts since I don't have any OpAmps in my kit yet (first time designing something with OpAmps here
Thanks for reading,
CD.
https://forum.allaboutcircuits.com/threads/power-good-and-source-disconnect-mosfet-question.167699/
The goal is to have a visual representation of the state of a circuit: tripped fuse or not tripped.
I took @AlbertHall's suggestions into account and simplified the design by referencing the non inverting input to ground and the inverting input to the voltage after the fuse. So that Vout is low in regular operation and higher when V2 and V1 are closer to each other to power the red LED on.
I've also put in an Op-Amp with V+ and V- terminals (LM741) to try and think about power supply (I've only used ideal OpAmps in my simulations so far).
In the environment I want to use this in, I have a readily available voltage source regulated at 26.5V. I'm trying to use that to provide a steady voltage to V+ through a resistive voltage divider. In the current simulation V+(fault) is over 10V and V+(good) is under the 22V which are the limit values of the LM741 per TI's spec sheet.
I've read on this forum and elsewhere that the LM741 is super obsolete and I was wondering if anyone had any recommendations for an OpAmp I could order or a kit/series that could play nice in this configuration so I order the right parts since I don't have any OpAmps in my kit yet (first time designing something with OpAmps here
Thanks for reading,
CD.
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