operator errors more likely, assuming that the chip is genuine.The op-amp simply isn't doing it's job...
operator errors more likely, assuming that the chip is genuine.The op-amp simply isn't doing it's job...
if it works for lm358, it should work with 324 as well.It works! I only had to substitute the shitty lm741 with a lm358
I don't understand why you need to amplify the LM35 output to feed the comparator. If it's just to include an op-amp into the project, that's a good enough reason. But you can make a very fine thermostat without the amplification step. Same comment about the window comparator - you don't need a window, you just need on/off with (a small, adjustable) hysteresis, right? Maybe I've misunderstood the goals. I try to simplify things in design but maybe you're trying to complicate them on purpose?It works! I only had to substitute the shitty lm741 with a lm358
Now I have an amplified voltage related to the gain equation. Great
Now I only need to build a comparator in such a way that when the voltage (that reflect the temperature) surpasses a certain value, I get a positive value and the relay activates.
You use the 741 incorrectly, your circuit doesn't work, and you fault the opamp??I only had to substitute the [snip] lm741 with a lm358
by Duane Benson
by Jake Hertz
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