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Re: Source Impedance [message #44365 is a reply to message #44364]

Sun, 11 April 2004 01:37

Wayne Parham
Messages: 18726
Registered: January 2001

Illuminati (33rd Degree)

I'd measure the amplifier voltage output with no load, and then connect a low value resistor across it to see how much that dropped the voltage. Monitor the voltage across the amplifier's output terminals.

You can either measure current directly or you can measure the voltage drop across the resistor and calculate current. Then, knowing how much reduction in voltage on the output will tell you what the output impedance is. Divide this amount of voltage drop by the current flowing to find output impedance.

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[Message index]

		Source Impedance By: Adrian Mack on Fri, 09 April 2004 23:57
		Re: Source Impedance By: Wayne Parham on Sat, 10 April 2004 01:19
		Re: Source Impedance By: Adrian Mack on Sat, 10 April 2004 21:42
		Re: Source Impedance By: Wayne Parham on Sat, 10 April 2004 22:45
		Re: Source Impedance By: Adrian Mack on Sat, 10 April 2004 22:51
		Re: Source Impedance By: Wayne Parham on Sun, 11 April 2004 01:37

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