bAVT5378 A

DIFFERENTIAL MEASURING PROBE WITH GALVANIC INSULATION - PRINTED PLATE

Producer: AVT

By using a differential measuring probe, only the signal controlling the gates of the MOSFET transistors is fed to the oscilloscope input. At the same time, you can observe waveforms on different potentials (low-side and high-side), and thanks to galvanic isolation you do not need to use a transformer on the power supply.

Recommendations: a practical, inexpensive solution for the measuring probe, which will be useful for all designers dealing with devices for power electronics.

Basic information:

• input voltage: -20V ... + 20V
• input impedance: 1 MV / ~ 10 pF
• measuring band: DC ... 134 kHz (drop 0.5 dB) ... 633 kHz (drop 3dB)
• delay of the rising / falling edge: about 500 ns / ok. 500 ns
• processing factor: approx. 200: 1 (10V -> 50mV)
• maximum input voltage:? 100 V
• power supply: 4 R6 (AA) batteries
• power consumption: 19mA (input circuit), 200mA (output circuit)
• a printed circuit board and documentation in the set

A detailed description in EP1 / 13 or