High-voltage Probe
Home made and differential, too
Published in issue 405, September 2010
Measuring small differences between high voltages normally calls for special ‘differential’ test probes, which do not come cheap. But you won’t bust your budget on expensive components building the DIY solution described here and you’ll pick up plenty of practical know-how in the process.
Characteristics - Differential attenuation switchable in two stages (–20 dB/–40 dB)
- Bandwidth 1 MHz, switchable limit at 500 kHz
- Maximum input voltage ±1000 V (peak value)
- Maximum output voltage ±10 V (at min. terminating impedance 1 kOhm)
- Common-mode suppression 55 dB at 6 kHz, 35 dB at 600 kHz
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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