Re: Reactance measurment and current sources
- From: velans81@xxxxxxxxx
- Date: Sat, 22 Sep 2007 04:50:04 -0000
On Sep 22, 8:41 am, john <conphil...@xxxxxxxxxxx> wrote:
Hi,
I have build 32 constant current sources controlled by a DAC. Each
source can provide upto +/- 1mA peak to peak with +/- 15volts
compliance voltage. The sources had some DC current leakage problem
which I solved using 6H inductors at the output of each source. The
output becomes dependent on frequency and reactance. I could not go
back and try to null the offset voltage thats why I had to use
inductors. The load impedance is between 1 to 10kohm. I need to know
that how much AC current is flowing through the load and how much
current is flowing through the inductor practically at 10kHz. The
inductor impedance at 10kHz is 370 kohm. What method should I use to
measure the current? I looked into the oscilloscope current probes and
they do not do that low current mesurement. I used the multimeter but
it did not show me anything else except zero.. plus how can measure
the reactance of the inductor at 10KHz?
Please advice!
John
hai u use shunt in which line u want measure the current
across the shunt there will be voltage . the shunt rating example
10:1 in this 10A current flow 1 volt is across it . by htis method r
use
hall device
anand
.
- References:
- Reactance measurment and current sources
- From: john
- Reactance measurment and current sources
- Prev by Date: Re: nice DVM
- Next by Date: Re: Scripting languages (was: Ping John Larkin)
- Previous by thread: Reactance measurment and current sources
- Next by thread: Re: Reactance measurment and current sources
- Index(es):
Relevant Pages
|
