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-   -   testing a single ended or differential topology (http://www.diyaudio.com/forums/pass-labs/110756-testing-single-ended-differential-topology.html)

Stefanoo 26th October 2007 10:43 AM

testing a single ended or differential topology
 
This is probabily a doomed question but....

the majority of the signal generators out are single ended...which means that they only have one output.

speaking of balance circuitry......if you have a signal generator with the above characteristics......it is true that it's possible to shoten the in(-) and evaluate the topology just as a single ended one.....

But.... what if i would like to have an input differential signal test and test the entire topolgy?


Is it convenient to transform somehow the signal into a differential version?

How do you guys generally do to test , let's say, a differential preamplifier or power amp?

Thanks in advance for the attention.

EUVL 26th October 2007 11:03 AM

Simplest solution is to get yourself a DRV134 chip and 4 9V-batteries. Within half an hour of soldering, you have a balanced driver for single ended signals.

Not for listening music, but good enough for test signals.


Patrick

Stefanoo 26th October 2007 12:15 PM

Oh really?

Do you have, by chance a simple schematic ...an application... for such as part to make it run as a differential signal generator (sine, sqaure triangolar wave)?

I appreciate very much your suggestion.

EUVL 26th October 2007 12:43 PM

Just Google and download the datasheet. There is a standard circuit.

I presume you have a normal, ground referenced signal generator in the first place.

Patrick

Stefanoo 26th October 2007 02:02 PM

ah ok...now it's clear....

so normal single end signal generator and then using this component to have a differential output signal.

Thanks.... i'll download the datasheet.

Stefanoo 26th October 2007 02:06 PM

ahhh.......do you know where i can find this part????....

do you have, by chance....any suggestion?

jacco vermeulen 26th October 2007 02:20 PM

Schuro in Kassel(D) undoubtedly offers it, check their online pages.
or RS-Components Italy, for a few euros more.
(instead of the TI DRV134 you could look for AD SSM2142)

Stefanoo 26th October 2007 02:27 PM

it's all in germaaaannnn.......or at least it's me that i'm not able to find the english version.....i don't know......how can the rest of the people on the world or even in Europe read it?.....

gggrrr......

jacco vermeulen 26th October 2007 02:30 PM

They are taught to speak German in highschool ?

drv134

Stefanoo 26th October 2007 02:41 PM

thanks a lot....
do you think they accept an order for just one part?


anyways ..... thanks for the information.



...as a note....hihi....i was taught in high school...and even before....to speak Italian...... :cool:


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