6-2-15

A practice problem. Calculating the equation for HdB. The numerator recognizes the zeroes and any offset. The denominator is the poles. remember that 

This is an example for bode plots. Looking at the relationship between Decibels and power ratios. 

5-26-15

This is a practice example problem. This is the predicted outcome of the circuit. Graphing current though time and the voltage through time. Then after creating the equation and implementing the measured values.

This is the circuit that the previous example is using the see if you can predict the voltage and current.

This is finding the power through a load. and then alternating the resistance outside of the load to see how the effects on the power. This is calculating the apparent power, the average power and the power factor.

This is the picture of the circuit being tested. Everything is in series. This is an extremely simple circuit. 

This is the circuit using a large resistor. As the drop across the large resistor is greater the power through the load is less. This is essentially, also what happens throughout the rest of the lab. The final two pictures depict the expect change in voltage through the load.

The resistor is really only measured to calculate the current. 

The energy is the highest in this graph. 

5-14-15

This is the voltage through an AC current at 1kHz.

Same circuit  5kHz.

Same circuit 500Hz.

This is the circuit that everything is being measured and the power source is being applied to. This is meant to be able to measure the impedance of the circuit so that a potentiometer can be used to apply a similar amount of impedance and the power can be maximized through the pot.

This chart shows the phase shifts between the voltage and the current. 

In this circuit the potentiometer is parallel in order to maximize the power across the potentiometer. 

This is the output of the circuit. Measuring the voltage as it fluctuates through the pot.

5-12-15

This is measurements of voltage through an AC circuit. You can see that the voltage measurements are out of phase. The red line is the mathematical interpretation of the current through a resistor. The voltage is running through an inductor. So the voltage is leading the current.

This example uses nodal analysis to calculate the voltage in the circuit. The voltage is being supplied as a cosine wave. As the voltage travels through the inductors and the capacitor, it becomes out of phase with the current. 

This example uses mesh analysis to calculate the phase shift between the voltage and the current. It is important to recognize that instead of measuring resistance, the impedance is always what is measured.

In the lab exercise, different components were attached to an AC power supply. This way the shift in the phase between the current and the voltage could be seen and its relationship to the circuit element could be established.

This is the theoretical calculations, and what is expected to happen through the circuit.

This is the experimental voltage and current graph, through the oscilloscope.