Measuring the output impedance of a system

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mehboob_iiui

Joined: 20 May 2006
Posts: 147
Helped: 5
Location: Rawalpindi - Pakistan

11 Jul 2007 14:57 Measuring the output impedance of a system

I am trying to make an audio amplifier using the lm741 op amp, and I want to measure its output impedance , so that I can attach a speaker of matching impedance,

this way I think, I will be transferring more power,,

but how do I measure the output impedance of my circuit,

also are there any bandwidth considerations to keep in mind when using the lm741

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A.Anand Srinivasan

Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India

12 Jul 2007 2:52 Re: Measuring the output impedance of a system

i have tried making an audio amplifier using lm741 and strictly advice against it.... slew rate is a very big concern for audio amplifier and so my signal was very distorted....

for finding the output impedance just calculate the output voltage by current...