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Overview
The differential amplification principle of a high-voltage differential probe refers to a pair of signals being input into an amplification circuit simultaneously and then subtracted to obtain the original signal.
A differential amplifier is an amplifier composed of two transistors with identical parameter characteristics and directly coupled.
If signals of equal amplitude and the same phase are input to both input terminals, the output is zero, thereby overcoming zero drift.
Typical applications of high-voltage differential probes:
Dynamic parameter measurement of SiC and GaN semiconductors
Evaluation of power supply system switching parameters
Floating ground voltage measurement of high-voltage inverters
Electric & hybrid vehicle electric drive systems
High-energy physics research
——— Related Applications ———
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IWATSU multi-channel high-voltage high-frequency optically isolated measurement probe Isolation SE-6000 remote UHV safety test system
CIC high-voltage differential probe DP20-20K-LVC high-precision 0.1% high-frequency isolated high CMRR 20 kV
Specifications
SI-9071 Specifications
| Parameter | Specification |
|---|---|
| Bandwidth | DC to 70MHz (-3dB) |
| Attenuation Ratio | 1:10 / 100 |
| Accuracy | ±1% |
| Rise Time | 5ns |
| Input Impedance | 4MΩ // 5.5pF each side to ground |
| Input Voltage | |
| - Category | CAT III |
| - Differential Range | ±70V (DC+AC Peak) and 70Vrms @1/10±700V (DC+AC Peak) and 700Vrms @1/100 |
| - Common Mode Range | ±700V (DC+AC Peak) and 700Vrms @1/10 & 1/100 |
| - Absolute Max. Voltage (Differential or Common Mode) | ±1400V (DC+AC Peak) and 1000Vrms @1/10 & 1/100 |
| Output Voltage | |
| - Swing | ±7V (into ≥50kΩ load) |
| - Offset (typical) | |
| - Noise (typical) | 2mVrms |
| - Source Impedance (typical) | 50Ω (for using 1MΩ input system oscilloscope) |
| CMRR (typical) | -80dB @ 50Hz, -60dB @ 20kHz-46dB @ 1MHz, -40dB @ 10MHz |
| Ambient Operating Temperature | -10 to 40℃ |
| Ambient Storage Temperature | -30 to 70℃ |
| Ambient Operating Humidity | Up to 85% RH |
| Ambient Storage Humidity | Up to 85% RH |
| Power Requirements* | |
| - Standard | 4xAA cells |
| - Options | Power leads, Mains adaptor* (6VDC/500mA or regulated 9VDC/300mA), USB power cord |
| Length of BNC Cable | 95cm |
| Length of Input Leads | 45cm |
| Weight | 400gms (probe and PVC jacket) |
| Dimensions (L×W×H) | 170mm × 63mm × 21mm |
Notes:
a. The supplied voltage must be less than 10V and greater than 4.5V, otherwise the probe could be damaged or can’t be operated properly.
b. Polarity is “+” inside and “-” outside. For wrong polarity, built-in circuit protects the probe, no danger or damage will occur.
c. When the voltage of the cells become too low, the power indicator on the panel will flicker.
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* Specifications are subject to change without notice.