Table of Contents

- 1 What is the effect of frequency on a half wave rectifier?
- 2 How does the frequency of a wave changes when the wave has been half rectified?
- 3 Does frequency change in full-wave rectifier?
- 4 What happens when the input frequency changes?
- 5 What is the value of output frequency if input frequency of signal supply of full-wave rectifier is 50 Hz?
- 6 At what frequencies will the output waveform be half wave rectified a full wave rectified?
- 7 What is the working of half wave rectifier?
- 8 What is the output DC voltage produced by a negative rectifier?

## What is the effect of frequency on a half wave rectifier?

Changing the input frequency will result into corresponding number of ripples at the output of the rectifier circuit.. The higher the frequency, will result into more ripples which will also result into a higher effective output current..

**What is the effect in output for changing input signal frequency for both the circuits?**

The output signal completes a period twice as fast as the input frequency, as you can see in the diagram. So ,frequency ,f=2f .

### How does the frequency of a wave changes when the wave has been half rectified?

2. How does the frequency of the wave changes when the wave has been half-rectified? Explanation: After the wave has been half-rectified, the frequency of the wave remains same. When the wave has been fully rectified, then the frequency doubles.

**How does one change the direction of output waveform of a half wave rectifier?**

Such waveform is called a half-wave signal. If the diode is reversed, it will become forward biased when the input voltage is negative. As a result, the output pulses will be negative. This half-wave voltage produces a load current that flows in only one direction making the circuit unidirectional.

## Does frequency change in full-wave rectifier?

If you have a half wave rectifier then the output waveform has the same frequency as the mains (line) frequency. If you have a full wave or a bridge rectifier then the frequency of the output waveform is twice the mains (line) frequency.

**What is the frequency of output signal of full-wave rectifier if the frequency of input signal is 50 Hz?**

100 Hz

So, if the input frequency is 50 Hz, output frequency will be 100 Hz.

### What happens when the input frequency changes?

If the input frequency is increased, this will droop less between half-cycles, and so increase output voltage slightly. The transformer may have a low primary inductance, and be loading the input supply. Raising the frequency will reduce this effect, and raise the output voltage slightly.

**What is the effect of frequency on diode?**

The effect of series resistance on the capacitance is found appreciable at higher frequencies when capacitance decreases rapidly with frequency. On the other hand, the conductance of the diode increases with frequency in the high frequency limit.

## What is the value of output frequency if input frequency of signal supply of full-wave rectifier is 50 Hz?

**At what frequencies will the output waveform be half wave rectified?**

The output frequency of a half wave rectifier is equal to the input frequency i.e 50 Hz.

### At what frequencies will the output waveform be half wave rectified a full wave rectified?

Therefore, the fundamental frequency of the ripple voltage is twice that of the AC supply frequency (100Hz) where for the half-wave rectifier it is exactly equal to the supply frequency (50Hz).

**What is the frequency of output signal of full-wave rectifier if the frequency of input signal is 50Hz?**

## What is the working of half wave rectifier?

The half wave rectifier conducts current only during the positive half cycles of the input supply voltage. The negative half cycles of the a.c. supply are suppressed. So no current is conducted and hence no voltage appears across the load. So current always flows in one direction (i.e. d.c. ) through the load.

**Which rectifier allows positive half cycles and blocks negative half cycles?**

Thus, the half wave rectifier allows positive half cycles and blocks negative half cycles. The half wave rectifier which allows positive half cycles and blocks negative half cycles is called a positive half wave rectifier.

### What is the output DC voltage produced by a negative rectifier?

The DC current or DC voltage produced by the negative half wave rectifier is measured across the load resistor RL. The output DC current or DC signal produced by a negative half wave rectifier is a series of negative half cycles or negative sinusoidal pulses.

**What is the output of a diode during a half cycle?**

Since the diode passes current only during one-half cycle of the input wave, we get an output as shown in the diagram. The output is positive and significant during the positive half cycles of the input wave. At the same time output is zero or insignificant during negative half cycles of the input wave.