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Measurements of ampllifiers
Hi the
Can you guys help me to create a test bench setup in order to perform measurements for amplifier frequency response (-3dB bandwidth). In other words what test equipment do I need to test and generate a Amplitude vs. Frequency plot of a given amplifier. Yet it sounds expensive to me. Does one 'sweep' an amplifier from 20Hz to 20KHz to obtain an amplitude response curve with an Audio Sweep Generator? Or does one test the amplifier at selected frequencies and then generate a table of data points of Frequency vs. Amplitude? Maybe a PC solution exists for such an interface on the market today. I would like to plot the frequency response of my home-brew amps and also rebuilt classics. If it's a manual thing then some ideas on how to go about calibrating the input levels and measuring the gain and output levels would be helpful. My test gear at the moment is an EICO Audio Sine Wave Signal Generator, an 40 MHz Dual Trace Oscilloscope and also a Stabilock Model 4032 RF Communications Analyzer. Plus the usual Volt-Ohm meters, power test resistors and small coaxial BNC Cables, etc. Thanks, Rich Sherman |
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