Wie kann man Hochspannungen mit einem Oszilloskop messen?
Hierzu kann man eine 1000x Probe anschließen.
Doch wie teuer ist eine 1000x Probe und wo bekommt man diese her?
 
 
So: sieht eine 1000x Probe für das Oszilloskop aus
Man kann damit am Oszilloskop Spannungen bis 40kV messen, weil die Teilung auf dem Bildschirm 8x5kV ist

 
Bei ebay für 1000 Euro
TEKTRONIX P6015A 1000X High Voltage Probe DC-75MHz, 40KV Peak
TEKTRONIX-P6015A-1000X-High-Voltage-Probe-DC-75MHz-40KV-Peak
TEKTRONIX P6015A 1000X High Voltage Probe DC-75MHz
 
The Tektronix P6015A is a ground-referenced 100 MΩ, 3.0 pF high voltage probe with 1000X attenuation. It adds high-voltage measurement capability to oscilloscopes and other measurement devices having an input resistance of 1 MΩ and an input capacitance of 7 pF to 49 pF. For heavy-duty high-performance measurements of voltages over 2.5 kV, the P6015A is the industry standard. You can measure voltages up to 20 kVrms and pulses up to 40 kV (peak, 100 ms duration). The 75 MHz bandwidth enables you to capture fast, high-voltage signals. The P6015A uses an environmentally safe silicone compound for a dielectric and never needs refilling. Other features include: A 7-49 pF compensation range, small compensation box that fits on adjacent amplifier inputs, and a readout option for use with most Tektronix digital scopes. With the readout option, displayed voltage amplitude values will be the actual signal value rather than understated by a factor of 1,000.
The item is in excellent condition with case and accessories shown.
Shipping weight 4 lbs