JFET VOLTMETER

This schematic illustrates a peak-reading diode voltmeter that utilizes two stages of amplification. A 100 µF capacitor is employed to provide a sufficiently large time constant, ensuring adequate meter damping. The limited differential output voltage, combined with an overdamped...

This document introduces an LED car voltmeter constructed using the op-amp LM312 and LED components. It is designed to display six voltage levels ranging from 10V to 15V, with each level representing a 1V increment. The working principle of...

In the voltage-to-time conversion section, the analog input voltage is directed to the attenuation circuit. The attenuated signal is compared with the ramp signal generated by the ramp generator, as indicated in the block diagram, through the input comparator...

The voltage that controls a V/F converter will be displayed when a frequency counter is used, which is directly proportional to the input voltage over a 1-second interval. A Voltage-to-Frequency (V/F) converter is a critical component in various electronic applications,...

A milliamp meter can function as a voltmeter by incorporating a series resistance. The required resistance is calculated by dividing the full-scale voltage reading by the full-scale current of the meter movement. For instance, using a 1 milliamp meter...

This digital voltmeter is ideal for measuring the output voltage of a DC power supply. It features a 3.5-digit LED display with a negative voltage indicator. The device measures DC voltages from 0 to 199.9V with a resolution of...