Constant Voltage Impedance Measurement

[Gcollier]

Does anyone have a good source of info on constant voltage impedance measurements. I've always used the constant current method, but would like to try constant voltage. Any links or schematics would be most helpful.

G.

 

[richie00boy]

If you are prepared to offer a bit of feedback, email me your email address and I will send you a document I have written.

 

[Davey]

Here's one that pops to mind:

http://www.t-linespeakers.org/tech/constant_V_measurer/index.html

Davey.

 

[Svante]

Why do you find that interesting?

IMO there is no difference between the two (if I understand what you mean correctly) possibly apart from noise sensitivity (which normally isn't an issue).

 

[Gcollier]

Why do you find that interesting?

IMO there is no difference between the two (if I understand what you mean correctly) possibly apart from noise sensitivity (which normally isn't an issue).

Well...I'm interested in adding some drivers to LEAP using their LTD model which requires that the drivers be measured with a constant voltage rather than constant current (you need a voltage curve and an impedance curve).

G.

 

[Svante]

Well...I'm interested in adding some drivers to LEAP using their LTD model which requires that the drivers be measured with a constant voltage rather than constant current (you need a voltage curve and an impedance curve).

G.

Ah, ok. Well Leap is as I understand it pretty advanced, so maybe they have good reasons for that.

 

[forr]

See d'Appolito's book. No real difference between constant current, constant voltage or constant resistance as long as the domain remains small signals.

 

[Svante]

See d'Appolito's book. No real difference between constant current, constant voltage or constant resistance as long as the domain remains small signals.

Yes, that is my thinking too, but here the software obviously required a specific format of input, so that would be a good reason to make the measurements as required.