U4 is the output of the circuit configured as a comparator, so the output will be either high or low.Nope--this is for a real world application (reading temperature). R10 in this circuit is actually an RTD. This circuit was designed by someone that is no longer working at my company--certainly not how I would have done it, but I have to live with it for now. I'm also terrible at analog electronics!
Perhaps the low end or R4 should be at –5V and not 0V (or even +5V)I can make little sense of that circuit.
As configured, U6's (+) input is always higher than its (-) input for any finite value of R10 so the output will always be high.
I think there's an error in the schematic.
Do you have a schematic of the original circuit, not the LTspice copy?
I don't see a U22.Clarification for above post: U4 in Spice circuit, but U22 in schematic picture
Thread starter | Similar threads | Forum | Replies | Date |
---|---|---|---|---|
G | How to design a multistage discrete BJT amplifier | Homework Help | 105 | |
M | Multistage Amplifier Design Project | Homework Help | 24 | |
I | Multistage Amplifier Design | Homework Help | 13 | |
D | Troubleshooting Multistage Amplifier Design | Homework Help | 2 | |
M | Design of MultiStage Transistor Amplifier | Analog & Mixed-Signal Design | 9 |
by Aaron Carman
by Duane Benson
by Jake Hertz