pplus
Full Member level 4
That`s what I told him already in post#3.
Yes, of course. This is just another way of explanation.
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That`s what I told him already in post#3.
Why is the Op amps input pins in the microvolts? Its because why?
Its a formula, but i still don't get why its in microvolts. Are u saying that every input pin on an opamp will always be in microvolts or is it just for diffential opamps?
is the opamps input pin in microvolts because why?
Hallelujah!Yes i understand what an Opamp does as far as amplify a small voltage or waveform into a bigger one, and the feedback resistor adjusts how much gain its going to be
Oh My ***!What I don't understand is that, When I put my DVM probes on the input pins why is it zero volts or microvolts?
YES!Are you saying that when you guys use an DVM meter and put your probes on the inputs of any op amp circuit it won't read because the DVM meter can't read microvolts so it say zero volts?
This is normal if opamp is in linear mode.Is the inputs of any op amp circuit always like this? is this normal
If opamp is in linear mode. If the op amp is in not linear mode, it is such a comparator is not true.My DVM meter can't measure microvolts, it can measure millivolts but when I put the DVM meter to millivolts setting it still read zero volts
Example:
When troubleshooting multiple op-amp stages lets say,
1.) Would the input pins always measure zero volts , microvolts?
Based on the logic of the scheme. Linear / non-linear mode, open / closed feedback, positive / negative feedback.2.) How would a Troubleshooting Tech, Know if the inputs were working or not?
You can tell whether or not the circuit operates.3.) Because for me I can't tell if the inputs are normal/working because my DVM meter won't measure microvolts
Zero volts between the two inputs. However there is often an easily measured voltage between the inputs and ground.1.) Would the input pins always measure zero volts , microvolts?
You don't check if individual pins are working. You want to know if the opamp as a whole is working, so you apply a signal to the input of the circuit and check the output to make sure it's correct.2.) How would a Troubleshooting Tech, Know if the inputs were working or not?
So it doesn't matter is the Opamp is Linear / non-linear mode, open / closed feedback, positive / negative feedback
The input pins will be in the micro volts for DC and AC signals or just DC volts?
You always measure the V input and V output not on the Input pins right? either its DC or AC voltages