The circuit was designed for the purpose of creating a voltmeter with high impedance that would measure Direct Current voltages across any types of circuits. CA3130 – a BiMOS operational amplifier ...
Normally, in a digital voltmeter, high input impedance of the preamplifier stage is protected against very high voltages by two diodes. One of them is connected to the positive terminal and the other ...
An ultra-high-impedance voltmeter performs contact measurements with virtually no charge transfer to or from the ESD-sensitive item. Electrostatic discharge (ESD) has the potential to destroy a device ...
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