Magnitude of ac input. See attached file for full problem description.
FIGURE 4(a) shows the circuit of a resistive load fed from a rectifier, via a filter. The filter is designed to remove unwanted a.c. that might be present in the output of the rectifier.
To test the performance of the filter, a 50 Hz alternating supply was connected directly to its input, as shown in FIGURE 4(b). The resulting a.c. voltage appearing across the load was then measured.
(a) Sketch a phasor diagram for a circuit of FIGURE 4(b) (Hint: begin at the output and work back towards the input.)
(b) Estimate the magnitude of the a.c. input voltage required to give a voltage of 1 V across RL.
The solution estimates the ac input and the voltage and output.
Armstrong Oscillator and Feedback Mechanisms Resulting
TMA 3 question Help
Q5 (e) The given L1:L2 ratio is not necessarily the optimum value to give a good sinusoidal output. [A Fourier probe on the output will give a spectral response]. Try to devise an experiment to find the optimum ratio*. Express the ratio as a turns ratio.
The report should include copies of any graphical responses produced in the investigation.
*This can be done by performing an AC sweep on the inductance parameter L2. However a sweep cannot be performed without a voltage source in the circuit. For purposes of this analysis a small voltage source can be inserted into the feedback loop as shown in the second version of the circuit on Blackboard.
The simulation software used is SIMATRIX SPICE which can be downloaded for free From: https://www.simetrix.co.uk/downloads/. This is an urgent request SPICE files and question paper uploaded. Any help an advantage. No description or support material in distance learning course work. Question not detailed enough. No support yet from tutor. I think you some how find the turns ratio from the graphs produced in the SIMATRIX SPICE files rather than just use equations for transformers.View Full Posting Details