# Sinusoidal Voltage and frequency?

• iflabs
In summary, the conversation discusses the relationship between frequency, voltage, and power in sinusoidal systems. It is mentioned that filter circuits can be used to filter out certain frequencies and that tuned circuits can maximize power at a specific frequency. The use of filters is also discussed in terms of discriminating between signals. Additionally, it is noted that higher frequencies require more power to maintain the same voltage across a capacitor, as shown by the equation I = C dV/dt.
iflabs
Does the frequency of a sinusoidal voltage or current attribute anything? Maybe more power?

All I know so far is that you can filter certain frequencies out with filter circuits.

yes...when working with tuned circuits, your maximum power will be at the frequency of the tuned circuit.

nearly all systems have a frequency response and if you match your input signals to that of the system, then you will have the least resistance or should i say impedance and maximum power transfer.

Filters are used to discriminate between signals. some you want to get rid of and some you want to keep.

iflabs said:
Does the frequency of a sinusoidal voltage or current attribute anything? Maybe more power?

All I know so far is that you can filter certain frequencies out with filter circuits.

In addition to deakie's comments, if you are putting a sinusoidal voltage across a capacitance, then yes, the higher the frequency, the higher the power required to maintain the same peak-to-peak voltage.

Quiz Question for iflabs -- starting with the equation relating current and voltage in a capacitor ( I = C dV/dt ), show that my statement is true.

## 1. What is sinusoidal voltage?

Sinusoidal voltage is a type of alternating current (AC) electrical signal that follows a sine wave pattern. This means that the voltage level increases and decreases in a smooth, continuous manner. It is the most common and ideal form of AC voltage used in household and industrial circuits.

## 2. How is sinusoidal voltage generated?

Sinusoidal voltage is generated using an alternating current (AC) generator or a power supply that converts direct current (DC) into AC. The generator rotates a coil of wire within a magnetic field, creating a fluctuating magnetic field that induces an AC voltage in the wire.

## 3. What is the frequency of sinusoidal voltage?

The frequency of sinusoidal voltage is the number of complete cycles or oscillations per second. It is measured in Hertz (Hz) and is typically 60Hz in the United States and 50Hz in most other countries. The frequency of sinusoidal voltage is directly related to the rotational speed of the generator.

## 4. What is the relationship between voltage and frequency in a sinusoidal waveform?

In a sinusoidal waveform, the voltage and frequency are directly proportional. This means that as the frequency increases, the voltage also increases, and vice versa. This relationship is important in determining the behavior and characteristics of electrical circuits and devices.

## 5. How is sinusoidal voltage used in electronics?

Sinusoidal voltage is used in electronics for a variety of purposes, including powering devices, transmitting signals, and controlling the speed of motors. It is also used in AC circuits to transfer power efficiently over long distances and to convert AC voltage to DC voltage for use in electronic devices.

• Electrical Engineering
Replies
3
Views
1K
• Electrical Engineering
Replies
28
Views
3K
• Electrical Engineering
Replies
78
Views
3K
• Electrical Engineering
Replies
2
Views
1K
• Electrical Engineering
Replies
54
Views
5K
• Electrical Engineering
Replies
5
Views
1K
• Electrical Engineering
Replies
13
Views
2K
• Electrical Engineering
Replies
17
Views
1K
• Electrical Engineering
Replies
1
Views
785
• Electrical Engineering
Replies
3
Views
3K