Electrical & electronic principles ( lap report ) AC power - Assignment Example

Using the oscilloscope, the current and the voltage waveforms supplies were observed and determined alongside determining the lead or lag angle for the circuit. Various capacitor values were recorded with keen interest in observing their trend. The circuit was first connected with R1 s the coil resistance, with R2 as the low Ohm resistor already used. The component values were all recorded accordingly. Then using the oscilloscope, the current and the voltage supplies were observed, as well as used in determining the lag angle for the circuit.

Finally, the data for various capacitors were recorded. Whenever the capacitor is by-passed by an emitter, and capacitance of the coupled capacitor is large in regards to the AC frequency signal, the capacitors would be approximated as a circuit that is short (Alamo, Swirhum & Swanson, 2005). Whenever the input signal or voltage is increased the output voltage and the signal would be further vary around the dc bias point that has been established (Roulston, 2007). This effect would continue up to when the limiting condition of the voltage is reached.

For the current in the circuit, the limiting condition would be VCC/RC, at the end, considered to be high, and a zero at the end considered to be low of the swing. The voltage of the emitter collector and the supply limit reaches a limit when they have a zero and VCC. Additionally, the voltage output and the varying current around the point of bias give out ac power towards the load (Zeubman, 2008). The delivered ac power is made to go through the load referred to as RC. AC signal, on the other hand, makes the current in the base to be varied around the bias dc current and the current collector around its level of quiescent.

The input signal leads to ac signal voltage and the ac current. Increasing the input signal would increase the output swing until when the maximum