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Electrical Measurements
Electrical Measurements

... voltage would be 2A.) Most function generators are designed to have an internal resistance of 50 Ω and maximum voltage amplitude of around 10 V. Generally they have a power output of at most a few watts. Certainly the most common a.c. source is the wall receptacle: 120 V at a frequency of 60 Hz. Tra ...
Sink vs Source
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... Power Factor (PF): Power factor is the ratio of the Active Power to the Apparent Power factor. It is a number between 0 and 1 and is used to determine how efficient a power system is. It is determined by the type of loads connected to the power system. For a purely resistive load, the power factor w ...
flexible electrostatic kinetic energy harvester competitive
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No Slide Title

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... the voltage down along the way. That way the current in the line is low, so the power losses are low. • So the voltage is increased before the electricity leaves the power station and then decreased as needed. • This is accomplished with a device called a transformer ...
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Reverse Breakdown Voltage Studies

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MT3 Interfacing light-emitting diodes (LEDs) and push buttons to the
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... allows an electric current to pass only in one direction. This is known as the diode's forward direction. It blocks the current in the opposite direction of the diode. This is known as the reverse direction of the diode. When an LED is connected to a circuit its forward current should not exceed a m ...
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How to Create Square Waves in MATLAB
How to Create Square Waves in MATLAB

... duty cycle is increased to increase the speed of the motor and decreased to reduce the motor speed. This type of control is referred to as Pulse Width Modulation (PWM). Our DAQs don’t source enough current to drive a motor so we will use PWM to control the light level of a Light Emitting Diode (LED) ...
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Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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