Voltñraft VC840, Voltñraft VC820 is a digital multimeter of the German company Voltñraft, specializing in measuring devices. The device is made on a specialized microcontroller FS9721LP3, with a high degree of integration. Voltñraft VC840 has the technology to determine the real effective value of alternating current, regardless of the shape of its curve - True RMS. The digital indicator allows you to display 4000 signal levels. The choice of the measurement limit is automatic.
Faults Voltñraft VC840, Voltñraft VC820.
80 percent - microcontroller failure.
20 percent is the failure of the input voltage divider resistors.
Photos of input circuits Voltñraft VC840, Voltñraft VC820.