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As we discussed already, the working principle of the basic digital voltmeter(DVM), now we will discuss one of its types Ramp type digital voltmeter.Digital voltmeter is an electrical measuring instrument used to display the potential difference between two points in the form of digits.
Ramp-type Digital Voltmeter. (also called single slope). V in. Ramp signal. Start measurement. Coincindence. Time. ?t. Gating time interval. Clock pulses to counter. Voltage-to-time conversion using gated clock pulses. Operation principle: The measurement of the time it takes for a linear ramp voltage to rise from O V to the
Types of digital voltmeters : The increasing popularity of DVMs has brought forth a wide number of types employing different circuits. The various types of DVMs in general use are : (i)Ramp type digital voltmeter. (ii) Integrating type digital voltmeter. (iii) Potentiometric type digital voltmeter. (iv) Successive approximation type
2 Jan 2017 RAMP Type Digital Voltmeter: • The operating principle of a ramp type digital voltmeter is to measure the time that a linear ramp voltage takes to change from level of input voltage to zero voltage (or vice versa). • This time interval is measured with an electronic time interval counter and the count is displayed
Basically it consists of a linea ramp is ± 12 V while the base is shown in the fig 2.2. At the start of measurement, a input voltage. When these two a gate i.e. the input compara finally reaches to 0 V or ground comparator. At exactly 0 V, number of clock pulses are m is opened, is proportional to t the gate remains open and the.
A basic block diagram of a Microprocessor Based Ramp Type DVM and its operating waveform is shown in Fig. The comparator has two inputs — input 1 accepts the output signal from the multiplexer, and input 2 accepts the ramp voltage from the ramp generator. When input 2 voltage
Ramp-type DVM. Its Operating principle is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage, or to decrease from the level of the input voltage to zero. This time interval is measured with an electronic time-interval counter, and the count is displayed as a
Description: The Ramp type DVM consists of a ranging & attenuator which is used to select the required range of measurement. A ramp generator is used to generate the ramp voltage. An input comparator continuously compares the dc input voltage with the ramp voltage. The ground comparator compares the ramp voltage
23 Dec 2012
The operating principle of the ramp-type DVM is based on the measurement of the time it takes for a linear ramp voltage to rise from 0 V to the level of the input voltage, or to decrease from the level of the input voltage to zero. This time interval is measured with an electronic time-interval counter, and the count is displayed as
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