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A vibrant scientific diagram illustrating a teraohmmeter circuit with glowing blue and green energy waves, voltage readings, and 'Ohm's Law' on a microchip.

1. Das zugrundeliegende MessprinzipEin Teraohmmeter arbeitet nach dem Strom-Spannungs-Messverfahren (U-I-Messmethode). Da der zu messende Widerstand (\(R_{x}\)) extrem groß ist, würde bei normaler Niederspannung kaum ein messbarer Strom fließen. Das Gerät nutzt daher folgendes Prinzip:Prüfspannung anlegen: Das Gerät speist eine präzise, sehr hohe Gleichspannung (\(U_{M}\)) ein (typischerweise zwischen 100 V und 500 V).Strom messen: Aufgrund des gigantischen Widerstands fließt ein winziger Strom (\(I_{M}\)) im Picoampere-Bereich (1 pA = 10⁻¹² A).Berechnung: Ein hochohmiger Messverstärker (Elektrometer-Verstärker) erfasst diesen Strom. Der interne Mikroprozessor berechnet daraus mittels des Ohmschen Gesetzes den Widerstandswert. erstelle mir ein bild davon Mehr sehen

#physics #electronics #diagram

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