I need help with analyzing this circuit using PSPICE. This is for a homework project. The specifications for this are as follows: I am to use a single ua741 opamp to design an amplifier with a gain of 20 volts, from a single negative power supply. It is to deliver 2 volts peak to a 1K load at 1 KHz. Input resistance must be greater than 100K and the frequency response needs to be from 50 Hz to 2 KHz +0/-3 dB (the low and high frequency cutoffs).
It looks like the circuit I have here does indeed have a gain of 20, but I need to figure out a few basic things, as I barely know how this amplifier works. I'm assuming that R5, within the high-pass filter at the output, is the 1K load here. I need to figure out how to measure for the appropriate frequency response.
This is the circuit in PSPICE:
This is the graph of voltage versus frequency, showing a gain of at least 20 V between 56.971 Hz and 213.952 Hz.
Now, when the specifications say 2 volts peak across a 1K load at 1 KHz, am I supposed to make the graph above reflect that (it's currently 12.210 V at 1 KHz), or am I thinking of something else? How can I tell if this design meets the frequency response requirements?
Thanks in advance for any help!
It looks like the circuit I have here does indeed have a gain of 20, but I need to figure out a few basic things, as I barely know how this amplifier works. I'm assuming that R5, within the high-pass filter at the output, is the 1K load here. I need to figure out how to measure for the appropriate frequency response.
This is the circuit in PSPICE:
This is the graph of voltage versus frequency, showing a gain of at least 20 V between 56.971 Hz and 213.952 Hz.
Now, when the specifications say 2 volts peak across a 1K load at 1 KHz, am I supposed to make the graph above reflect that (it's currently 12.210 V at 1 KHz), or am I thinking of something else? How can I tell if this design meets the frequency response requirements?
Thanks in advance for any help!