Electronics > Beginners
Can I use a Lab Bench PSU and a Function Generator at the same time?
xavier60:
The ground leads for the function generator and CRO must connect to the point that has the ground symbol in my diagram, no to the op-amp's inverting input.
Brumby:
This is a rough block diagram showing the basics of your supply and how it might typically be used for op-amp circuits.
Note:
* The earth terminal is not connected to any of the output terminals - unless you make that connection yourself.
* Each output should be set to the same voltage. If your supply has dual tracking capability (I haven't checked the manual), then you can set both at the same time.
* Many supplies also allow for both outputs to be paralleled internally for greater current output. Make SURE this is not engaged!!!
codingwithethanol:
--- Quote from: xavier60 on May 25, 2019, 06:40:35 am ---The ground leads for the function generator and CRO must connect to the point that has the ground symbol in my diagram, no to the op-amp's inverting input.
--- End quote ---
But its AC? I dont understand how that would work
xavier60:
--- Quote from: codingwithethanol on May 25, 2019, 07:42:24 am ---
--- Quote from: xavier60 on May 25, 2019, 06:40:35 am ---The ground leads for the function generator and CRO must connect to the point that has the ground symbol in my diagram, no to the op-amp's inverting input.
--- End quote ---
But its AC? I dont understand how that would work
--- End quote ---
Yes, the signal from the function generator is usually AC, not always. Is that what you mean?
Everything has to be wired exactly as shown in my diagram to work properly.
On second thoughts about adding the 1KΩ resistors. If you haven't done it yet, It's best to use both PSU channels as explained. It is the preferred way to implement dual rails.
codingwithethanol:
--- Quote from: Brumby on May 25, 2019, 07:14:06 am ---This is a rough block diagram showing the basics of your supply and how it might typically be used for op-amp circuits.
Note:
* The earth terminal is not connected to any of the output terminals - unless you make that connection yourself.
* Each output should be set to the same voltage. If your supply has dual tracking capability (I haven't checked the manual), then you can set both at the same time.
* Many supplies also allow for both outputs to be paralleled internally for greater current output. Make SURE this is not engaged!!!
--- End quote ---
I found this video of a guy testing a very similar supply with slightly different specs, it does have a tracking mode, and ill try this next
(Tomorrow, because its nearly 4am over here)
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