I have one of these:
This toy looking USB Oscilloscope it is NON-relative with this topic.
Kiriakos, i have also it, and if it's a toy, it's a great toy.
It can easily trace Bode plot from DC to 50MHz, and so you it can help you much to make your diode capacity measurements.
And it's a very cost effective solution if you compare with high-end RLC meter, no ? 🙂
And also, this is something in digital format !
I think this is what Jackinnk was trying to say.
Regards.
Frex
It can easily trace Bode plot from DC to 50MHz, and so you it can help you much to make your diode capacity measurements.
And it's a very cost effective solution if you compare with high-end RLC meter, no ? 🙂
And also, this is something in digital format !
I think this is what Jackinnk was trying to say.
Regards.
Frex
Kiriakos, i have also it, and if it's a toy, it's a great toy.
It can easily trace Bode plot from DC to 50MHz, and so you it can help you much to make your diode capacity measurements.
And it's a very cost effective solution if you compare with high-end RLC meter, no ? 🙂
And also, this is something in digital format !
I think this is what Jackinnk was trying to say.
Regards.
Frex
People I do not need information's relative to hobby tools with imaginary capabilities.
For me ... about so .. calculations, them are pointless.
And if some one has awareness of how to perform a specific measurement by using a workaround or a combination of separate instruments, he better explain his story from alpha to omega or he should never bother so to reply.
I have invest in my life time about 60.000 euros in all sort of tools, its and every one, it does a job with precision even my rechargeable power drill.
Finally it seem that is a waste of time to trying make any response to you.
And your answer is once again inappropriate IMHO in a DIY forum.
So from now i would avoid you...
Frex
And your answer is once again inappropriate IMHO in a DIY forum.
So from now i would avoid you...
Frex
Kiriakos, i have also it, and if it's a toy, it's a great toy.
It is if it's not one that he's selling or who's sending him freebies. 😀
Seriously, there's things worth paying attention to and things worth ignoring. Jan Didden and I played with it as a network analyzer and it worked great. I'm planning on getting one for myself.
It is if it's not one that he's selling or who's sending him freebies. 😀
In you next life do not select the profession of a dentist, the chair for your customers it is an expensive gadget.
Neither become a carpenter, just for your workshop you will need 40.000 - 60.000 $ minimum as investment.
Seriously, it feels good in the soul of any true hardworking man, him to enjoy a bit of fame and recognition in his life, especially when this coming from true engineers all over the world which them also have name and surname. 😉
In you next life do not select the profession of a dentist,
Yeah SY, next time study harder and you can get into veterinary school!
There's no money in plastics anymore, Benjamin.
did you check the voltage was not changed for each of the test frequencies?
These numbers are nonsense easily obtained even with a GR impedance bridge unless you take care of bias and excitation level. ANY forward conduction becomes multiple nF or even uF of reading.
Yeah SY, next time study harder and you can get into veterinary school!
That stuff isn't cheap, either.
Ten times the price of a Hitachi wand.
This toy looking USB Oscilloscope it is NON-relative with this topic.
People I do not need information's relative to hobby tools with imaginary capabilities.
I know this will fall on deaf ears because you think too highly of your intelligence to ever think you are wrong. But quite clearly, you don't know what you are talking about. While it is true, the oscilloscope is not of the same quality as a benchtop device, that does not mean this device is a toy. It is a very capable multi-tool which when combined is WAY more powerful than the sum of its individual parts. Additionally, it is now manufactured by National Instruments, who are NOT in the market of making toys. As an aside, they just released an updated version (the +/- power supply is now variable and a bit higher power, plus possibly a bit lower cross-talk). This device has a well documented 30MHz oscilloscope (20Mhz is the -0dB point, 30Mhz is the -3dB point), a fully featured function generator, power supplies, etc. It allows you in software to create discrete instruments from these parts and it does a damn good job when used within its design specifications.
It is if it's not one that he's selling or who's sending him freebies. 😀
Seriously, there's things worth paying attention to and things worth ignoring. Jan Didden and I played with it as a network analyzer and it worked great. I'm planning on getting one for myself.
Someone over at EEVBlog is writing a basic audio analysis suite for this device. It isn't an amazing performer, but is a great starting point for most hobbyists. You can measure THD (to around 0.01%), Intermodulation distortion, etc.
It is if it's not one that he's selling or who's sending him freebies. 😀
Seriously, there's things worth paying attention to and things worth ignoring. Jan Didden and I played with it as a network analyzer and it worked great. I'm planning on getting one for myself.
Here are the threads I mentioned, I would edit but it is too late:
Analog Disovery as Audio Analyzer - Page 1

Here it is measauring THD versus power on an amp. You can see the other tabs for various other functions.
Also a related project from the same author, where he is making a sweeping impedance analyzer:
Impedance Analyzer Build and Experiments - Page 10
The latter is even more interesting for circuit nuts as it does full sweep analysis from 10Hz to 20MHz (not sure if more, just glossed over the thread before posting it).

it isn't perfect but it is VERY capable to perform these measurement overall, it uses an add-on board designed in the thread. It is not perfect, as the designer says but VERY capable it seems.
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PDG8 -- thanks for posting the link.
In making impedance measurements, it's important to be able to norm for the complex impedance of the cables and probes. You can do this with the Bode100 and the HP3577a.
For those writing code, Tom Kite (who passed away last year) wrote a macro for compensating the cable and probe Z -- it's on the audio precision website.
In making impedance measurements, it's important to be able to norm for the complex impedance of the cables and probes. You can do this with the Bode100 and the HP3577a.
For those writing code, Tom Kite (who passed away last year) wrote a macro for compensating the cable and probe Z -- it's on the audio precision website.
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