vacuum tube voltmeter meaning in Hindi

Examples

1. URM-25x models also contain an internal VTVM ( vacuum tube voltmeter ) and crystal calibration.
2. Such amplified multimeters are called VTVMs ( vacuum tube voltmeters ), TVMs ( transistor volt meters ), FET-VOMs, and similar names.
3. The vacuum tube voltmeter ( VTVM ) uses the high input impedance of a valve to buffer the circuit being measured from the load of the ammeter.
4. In a potentiometer bridge circuit, this could be reduced to a fraction of a microampere . Vacuum tube voltmeters from the 1940's on had this high or higher input impedances.
5. "Vacuum Tube Voltmeters " or valve voltmeters ( VTVM, VVM ) were used for voltage measurements in electronic circuits where high cathode follower input circuit, and thus did not significantly load the circuit being tested.