Hello,
I have some basic questions about opamps.
Can I use them without feedback? If no, why?
Im trying the following experiment (simulating in pspice):
Im using a uA741 opamp. (datasheet)
In the V+ I put a 60.5uV amplitude signal. V- is connected do ground. There's no feedback configurtion and opamp powersupply is +-15V.
Taking in acount that Avd=200 V/mV=200 000 V/V with this configurantion shouldn't be a outpub signal with about 13V amplitude?
Vo/Vi=200 000; Vo=13V => Vi=60.5uV
I made the simulation in pspice but a DC component appear and the signal doesnt have the amplitude I espected (Vpk-pk=13-(-5.5)). I dont understand why it happens. I simply cannot/shouldn't use an ampop with feedback? Or theres something Im making wrong?
Thanks in advance!
I have some basic questions about opamps.
Can I use them without feedback? If no, why?
Im trying the following experiment (simulating in pspice):
Im using a uA741 opamp. (datasheet)
In the V+ I put a 60.5uV amplitude signal. V- is connected do ground. There's no feedback configurtion and opamp powersupply is +-15V.
Taking in acount that Avd=200 V/mV=200 000 V/V with this configurantion shouldn't be a outpub signal with about 13V amplitude?
Vo/Vi=200 000; Vo=13V => Vi=60.5uV
I made the simulation in pspice but a DC component appear and the signal doesnt have the amplitude I espected (Vpk-pk=13-(-5.5)). I dont understand why it happens. I simply cannot/shouldn't use an ampop with feedback? Or theres something Im making wrong?
Thanks in advance!
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