Other Parts Discussed in Thread: LMC6001, UCC21521,
For a defense project, we need to measure a 2500 Amps pulse current with a rise time of 2-3 micro secs.
This pulse is produced by discharging a 0.3 uF capacitor charged to 5000Volts- the load being a small impedance of >2 ohms.
The switch to do this discharge is an Infineon IGBT -FZ750R65KE3. The pulse frequency is low - every 10 secs or so.
The event sequence is- Arm the HT( a voltage doubler ) feed to 5600V, Charge the Capacitor to 5000V ( sensing by measuring current through a 1 Gohm Resistor and V drop
across a 100K resistor). An Electrometer grade LMC6001, op amp gives a low imp. signal for display and control.
Then one can chose to FIRE or ABORT the run. High Voltage Reed switches are used with appropriate resistors for CHARGE and ABORT functions.
For FIRE , a 18V -100 microsec - pulse from an IGBT driver chip ( UCC21521) is used.
Inspired by your TIDA-01063 and related efforts using Rogowski Coil, We have designed and made a few pieces of this Coil.
For signal amplification, we are using AD8421- Ins. Amp at a Gain of 100.
Beyond this we, need a little hand holding for Calibration etc.
Your expert comments will be of great help.
Fateh Singh +919988111195- ( email@example.com)
MONTECH INSTRUMENTS, 181/31, Ind. Area CHANDIGARH-160002. INDIA.