Gary and Ed,
I'm definitely open to suggestions. Can you give provide some details
on
where to source these brass blocks? I am monitoring voltage drops at the
Board level to measure Inrush Currents, but I guess I didn't think there was a
means of doing this at the chassis level when drawing 50-100 amps. Can you or
anyone give me a line on some products to look at? I LOVE TEST JIGS!!!
Thx,
Joe
From: [email protected]
[mailto:[email protected]] On Behalf Of Gary McInturff
Sent: Tuesday, February 17, 2004 4:11 PM
To: 'Price, Ed'; 'EMC PSTC'
Subject: RE: DC Current Probes
I was wondering the same thing. You can get brass blocks that drop mV per lots
of amps linearly. They come in different sizes and offer almost no impedance
at DC or higher freq's. DVM's or O-scopes are hooked in parallel with the
blocks and the small voltage drop monitored. They handle lots of power and are
pretty cheap.
Am I missing something (again?)
Gary
From: Price, Ed [mailto:[email protected]]
Sent: Tuesday, February 17, 2004 7:52 AM
To: 'EMC PSTC'
Subject: RE: DC Current Probes
>-----Original Message-----
>From: Finlayson Joseph-G3162C [mailto:[email protected]]
>Sent: Tuesday, February 17, 2004 5:54 AM
>To: 'EMC PSTC'
>Subject: DC Current Probes
>
>
>
>Group,
>
> I am looking to source a DC current probe to measure steady state
>as well as inrush currents for a modular chassis up to 100 Amps DC.
Joe:
Do you REALLY need a current probe? Can't you do this with a resistive shunt
and an oscilloscope, using either differential inputs or simply floating the
scope?
That said, some of the widest bandwidth current probes (like 3 dB down at 5
Hz, very flat response, 1% accuracy) are available from Pearson Electronics:
http://www.pearsonelectronics.com/ . Unfortunately, I don't know of a 100
Amp DC current sensor; all the Tek or HP probes (Hall effect or
magnetoresistive) that I've seen are limited to about 6 Amps or so.
Ed
Ed Price
[email protected] WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA USA
858-505-2780 (Voice)
858-505-1583 (Fax)
Military & Avionics EMC Is Our Specialty
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ieee-pses.org/
To cancel your subscription, send mail to:
[email protected]
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Ron Pickard: [email protected]
Dave Heald: [email protected]
For policy questions, send mail to:
Richard Nute: [email protected]
Jim Bacher: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ieee-pses.org/
To cancel your subscription, send mail to:
[email protected]
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Ron Pickard: [email protected]
Dave Heald: [email protected]
For policy questions, send mail to:
Richard Nute: [email protected]
Jim Bacher: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ieee-pses.org/
To cancel your subscription, send mail to:
[email protected]
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Ron Pickard: [email protected]
Dave Heald: [email protected]
For policy questions, send mail to:
Richard Nute: [email protected]
Jim Bacher: [email protected]
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
