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What is the working principle of digital voltmeter?
# voltmeters usually employ an electronic circuit that acts as an http://www.answers.com/topic/integrator, # linearly ramping output voltage when input voltage is constant (this can be easily realized with an http://www.answers.com/topic/operational-amplifier). # The dual-slope integrator method applies a known reference voltage to the integrator for a fixed time to ramp the integrator's output voltage up, then the unknown voltage is applied to ramp it back down, and the time to ramp output voltage down to zero is recorded (realized in an http://www.answers.com/topic/analog-to-digital-converter implementation). # The unknown voltage being measured is the product of the voltage reference and the ramp-up time divided by the ramp-down time. # The voltage reference must remain constant during the ramp-up time, which may be difficult due to supply voltage and temperature variations. . Digital voltmeters necessarily have input amplifiers, and, like vacuum tube voltmeters, generally have a constant input resistance of 10 megohms regardless of set measurement range
If a ramp were coated with a smoother surface the ramp and efficiency would .?
The smoother the surface of a ramp, the greater is the danger of a vehicle slipping and losing traction.A wet, smooth ramp could cause a pedestrian to slip over and be hurt.
What is the mechanical advantage of a ramp What is the mechanical advantage of a ramp standing straight up?
The mechanical Advantage is FORCE TIMES DISTANCE
How do you increase the efficiency of pushing a concrete block up a wooden ramp?
Reduce the friction of it and the ramp, for example, mounting it on wheels.
How you can determine the characteristics of zener diode by oscilloscop?
A: If you have a ramp generator or make one LM555 then feed it to the zener don' t forget the limiting resistor with the scope across the zener the display will dhow its voltage and current characteristics. you can do the same for a diode even a transistor and more.
How does ramp generator work?
A ramp generator usually consists of a circuit that generates a linearly increasing voltage output over time. This voltage is typically used as a control signal in electronic devices for various purposes, such as controlling the sweep rate in oscilloscopes, generating PWM signals in motor control, or triggering events in timing circuits. The output voltage rises gradually until it reaches a peak value, at which point it may reset to its initial level to start a new ramp cycle.
What is the working principle of digital voltmeter?
# voltmeters usually employ an electronic circuit that acts as an http://www.answers.com/topic/integrator, # linearly ramping output voltage when input voltage is constant (this can be easily realized with an http://www.answers.com/topic/operational-amplifier). # The dual-slope integrator method applies a known reference voltage to the integrator for a fixed time to ramp the integrator's output voltage up, then the unknown voltage is applied to ramp it back down, and the time to ramp output voltage down to zero is recorded (realized in an http://www.answers.com/topic/analog-to-digital-converter implementation). # The unknown voltage being measured is the product of the voltage reference and the ramp-up time divided by the ramp-down time. # The voltage reference must remain constant during the ramp-up time, which may be difficult due to supply voltage and temperature variations. . Digital voltmeters necessarily have input amplifiers, and, like vacuum tube voltmeters, generally have a constant input resistance of 10 megohms regardless of set measurement range
What is the working principle of RAMP type digital voltmeter?
The working principle of ramp type digital voltmeter is that: It takes measurement of the time that is taken by instrument for its input voltage to change its state from input level to zero level and also the reverse is also true. An digital counter is employed in this system that measured time intervals and gives this output to the display unit that merely displays the output inform of digits with the help of indicating tubes thus making this section to work as output device. A voltage, referred as ramp voltage, is initiated at the beginning of measurements. Generally used ramp is negative going type but we also use one of positive going type. A continuous comparison is made between ramp voltage and that the voltage under measurement. As soon as, it is found that ramp voltage becomes equal to the input voltage a pulse in formed by coincidence generally called comparator circuit. At the same time value of ramp voltage is also made to fall down till the time when it reaches zero level. When value of ramp voltage has fallen to zero or ground another circuit called ground comparator comes into play and result in to close the gate. Some time is taken by the circuit between opening and closing of the gate can be given by T, now, clock pulse generator circuit generates some pulses during time T that are given to gate as a result of them counting an displaying can be performed. Thus, Input voltage that was initially fed to the instrument is read in digital form. It employs multi-vibrator circuits that are basically used to determine rate according to which cycles of measurement are started this multi-vibrator is called sample rate multi-vibrator. It is because the initial pulses that are responsible for activation or generation of next ramp voltages are generated by sample rate multi-vibrator as with as multi-vibrator also sends a pulse to counter circuit that makes it to come again to 0 states to clean up the digital display.
How a Analog to Digital convertor works?
This device will sample,(take a snapshot), of the analogue signal and convert the voltage to a string of digital binary bits. Internal circuit description The converter generates a linear voltage ramp derived from an internal voltage reference starting from zero volts. A binary digital counter is activated and incremented by an internal oscillator. When an analogue comparator senses that the internal ramp has reached the same value as the applied voltage the comparator flips and the counter is frozen. The counter value appears at the output as a digital number equivalent to the applied analogue voltage. This is called slope integration.
What is an Egyptian ramp?
An Egyptian ramp is a ramp with a platform in the middle to reduce the incline of the ramp and/or to change the direction of incline.
What is ramp up?
ramp-up-1
How do you work out the gradiant on a ramp?
Divide the height of the ramp by the length of the ramp (rise over run).
Is luan the best wood for a skateboard mini ramp?
It is alright for the surface of the ramp but not for the structure of the ramp.
What is a sentence with the word ''ramp''?
The entry is just up the ramp, sir. A drawbridge is not a ramp.
How high is the vert ramp?
witch vert ramp?
What radio net do you have to be on when operating on the ramp?
Ramp Net
How does the increasing the height of a ramp affect how far a ball rolls down ramp?
how does increasing the height of a ramp affect how far a ball rolls down the ramp
