Can you tell me how you calculate this values.Audioguru said:It would have a gain of 11 up to about 18kHz.
The graph shows a gain of about 11 at 90kHz. But I think that is the cutoff frequency where the gain is actually 3dB less. Then the negative feedback reduces the gain more. So the response is flat to only about 18kHz.jony130 said:Can you tell me how you calculate this values.Audioguru said:It would have a gain of 11 up to about 18kHz.
You might be correct. Nobody knows becuse the lousy old 741 opamp is spec'd only for a 30V supply, not 12V. Many other opamps are spec'd at 30V and at 5V. The lousy old 741 opamp won't work properly with a supply of only 5V. Some of them might not work properly with a supply of only 12V.Slew rate limiting for Ucc=12V (Vcc=±6V) gives Uomax=8Vpp (4Vp) so max output swing F=SR/2*pi*U=19KHz (I hope that this calculation a correct)
Yes, of course you're right. So it seems that I need to use some younger opamp.Audioguru said:The graph shows a gain of about 11 at 90kHz. But I think that is the cutoff frequency where the gain is actually 3dB less. Then the negative feedback reduces the gain more. So the response is flat to only about 18kHz.
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