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After checking for professional ones i realized that i could make one from some spare parts from my lab.
High voltage probe circuit diagram. Diy high voltage probe for digital multimeters. A high voltage probe allows an ordinary voltmeter to measure voltages that would otherwise be too high to measure or even destructive. Fluke does have a high frequency hv probe the pm9100 which is a 200 mhz 4 kv probe. It has two high impedance inputs and a single ground referenced output.
You want to measure the voltage pulse or spike so you ll need a high voltage high frequency probe. Simple voltage probe circuit shown in the schematic diagram below very useful in testing testing or troubleshooting discrete or integrated circuits especially logic circuitry. It does this by reducing the input voltage to a safe measurable level with a precision voltage divider circuit within the probe body. Any common mode signal is rejected.
This voltage probe circuit gives two indication high or low. I was in a need for a high voltage probe for my multimeters to check various capacitor banks and high voltage dc charging circuits. Fortunately there is a safe way to measure high voltage circuits such as in this example. The output is proportional to the difference in voltage between the positive and negative inputs.
Many popular hv dc probes are not suitable such as the fluke 80k 40 probe.
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