Is it possible to obtain an output voltage that is greater than the input voltage?

You can get a bigger output voltage than the input voltage by many means including the one you suggest but the output will be at a lower current than the input current and thus the output power will always be less than the input power – efficiency will always be less than 100\%.

How do you compare voltages?

Comparison to Standard Voltage One use of a comparator is to compare the input to a standard voltage and switch the output if the input is above that threshold. If goes more positive than the voltage set by the voltage divider for , then the output switches to . When drops below that value it switches back to .

How does a voltage comparator work?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side; VDD in the illustration) or a 0 (the voltage at the negative side) to indicate which is larger. The circuit amplifies the voltage difference between Vin and VREF, and outputs the result at Vout.

Why is output voltage higher than input voltage?

If the output voltage becomes higher than the input voltage, a large current may flow from the output to the input, which may damage the IC. This is caused by a parasitic diode in the internal MOSFET. The parasitic diode may turn on if the output voltage is higher than input voltage by its Vf.

Which among the following is used to increase phase angle between different voltages?

14. Which among the following is used to increase phase angle between different voltages? Explanation: Phase angle between different voltages can be measured using phase detector circuit.

How many reference voltages are present in a window comparator?

two reference voltages
Op-amp window comparators are a type of voltage comparator circuit which uses two op-amp comparators to produce a two-state output that indicates whether or not the input voltage is within a particular range or window of values by using two reference voltages.

How does a comparator compare to two voltages?

You can use a voltage comparator to compare the voltage from the photocell with a 0.5 V reference voltage to determine whether or not the sun is shining….In This Article.

Input Voltage	Output Voltage
Less than reference voltage	Negative
Equal to reference voltage	Zero
Greater than reference voltage	Positive

How do you keep the output voltage of the op-amp comparator within specific limits?

Explanation: To keep the output voltage swing within specific limit, op-amps are used with external wired components such as zeners or diodes. In the resulting circuit, the outputs are limited to predetermined values.

How will be the output voltage obtained for an ideal op-amp?

Explanation: The output voltage of an ideal op-amp is the product of gain and algebraic difference between the two input voltages. 7.

Why does the output voltage of a rectifier vary?

The bridge rectifier is not regulated, its output voltage can vary with different load impedance. Changing the load capacitance C affects the capacitor’s reactance Xc, which also affects load impedance . A lower load impedance, just like load resistance, will draw more current at a given voltage.

Why is it so hard to make a microcontroller compare two voltages?

What makes this challenging is the fact that the LOWER voltage needs to be output. I can easily make a microcontroller compare two voltages on the A/D pins and output the lower on the D/A pin, but i’m afraid 2mA of power will not be enough to run the microcontroller properly – plus i’m sure there must be a much easier way.

What is the acceptable voltage range for input signal voltages?

“Acceptable” input signal voltages range from 0 volts to 0.8 volts for a “low” logic state, and 2 volts to 5 volts for a “high” logic state.

What happens if a CMOS gate output voltage is more than 5?

When the CMOS gate in question is powered by a voltage source in excess of 5 volts (V cc), though, a problem will result. The “high” output state of the CMOS gate, being greater than 5 volts, will exceed the TTL gate’s acceptable input limits for a “high” signal.

What is the difference between input and output signal levels?

As you can see, the tolerable ranges for output signal levels are narrower than for input signal levels, to ensure that any TTL gate outputting a digital signal into the input of another TTL gate will transmit voltages acceptable to the receiving gate.