A VTVM is an extremely important electronic equipment and is widely used for making different measurements in electronic circuits.
Merits:
* A VTVM draws extremely small current from the measuring circuit. therefore it gives accurate readings.
* VTVM uses triodes, the voltage to be measured is amplified. This permits the use of less sensitive meter.
*There is little effect of temperature variations
*It has wide frequency response
Demerits:
*Accurate readings can be obtained only for sine waves.
*It cannot make current measurements directly.
Merits:
* A VTVM draws extremely small current from the measuring circuit. therefore it gives accurate readings.
* VTVM uses triodes, the voltage to be measured is amplified. This permits the use of less sensitive meter.
*There is little effect of temperature variations
*It has wide frequency response
Demerits:
*Accurate readings can be obtained only for sine waves.
*It cannot make current measurements directly.
