Partnered Output Coils - Free Energy

[verpies]

...really good non contact DC/AC current probes plus amplifiers cost about $6000. for the set.

Which make and model did you have in mind?

[MarkE]

Which make and model did you have in mind?

Tektronix TCP300A amplifier and any of their TCPxxx probes.  Each are about $3K, some are more.  So one probe plus the amplifier is $6K or more.

[allcanadian]

@Mark E

Tektronix TCP300A amplifier and any of their TCPxxx probes.  Each are about $3K, some are more.  So one probe plus the amplifier is $6K or more.

I use the Allegro ACS series fully temperature compensated hall effect current sensors which I see are comparable in accuracy to your setup at +/- 1% ... I paid about $4 each for 50A/100A with free shipping. Awesome product with an isolation voltage over 4Kv and I bought eight of them at various ratings and have had no issues with them to date.


The technology has come a long way in the last ten years and I have also switched to mosfet based diode setups which basically have near zero voltage drop. As well as integrating smart micro-computers into common circuits and applications. It sure beats the hell out of some of the stuff we were doing 20 years ago and they were not the good old days in my opinion. It is so easy to do in an hour which used to take me days it just boggles the mind.


Do you remember the old 7400 series/wire wrap days?, it just gives me a headache thinking about it... Oh the humanity.


AC

[MarkE]

@Mark E

I use the Allegro ACS series fully temperature compensated hall effect current sensors which I see are comparable in accuracy to your setup at +/- 1% ... I paid about $4 each for 50A/100A with free shipping. Awesome product with an isolation voltage over 4Kv and I bought eight of them at various ratings and have had no issues with them to date.

I have used those parts.  The ACS7xx parts are nice but have a high noise floor and are limited to 80kHz bandwidth.  They are not suitable for looking at switching waveforms above about 5kHz.

The technology has come a long way in the last ten years and I have also switched to mosfet based diode setups which basically have near zero voltage drop. As well as integrating smart micro-computers into common circuits and applications. It sure beats the hell out of some of the stuff we were doing 20 years ago and they were not the good old days in my opinion. It is so easy to do in an hour which used to take me days it just boggles the mind.


Do you remember the old 7400 series/wire wrap days?, it just gives me a headache thinking about it... Oh the humanity.


AC

[Drak]

@Drak: There are "good enough" current probes, and there are cheap (under 300 dollars) current probes. Good luck finding both qualities in the same probe.

Well, the cheap ones will have to do, lol. Shouldn't it be at least better then a basic multimeter measuring current, at least I would be able to see the current at a specific time? I've never used one before, so I don't know.

Whatever you do get, you should do a comparison test, looking at the same current signal as measured by the probe, and simultaneously looking at the voltage drop across a good non-inductive current-viewing resistor. Has EMJunkie ever reported the results of such a calibration test for his inexpensive current probe?

I don't know, I don't want a probe for just this project, aren't even the cheap ones useful? I'll look around see what I can find, Thanks