2-Mention some applications in which such regulators can be used?
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1- Can a simple variable resistor be used instead of the fan speed regulator? and why?
2-Mention some applications in which such regulators can be used?
3-Can these organizations use to regulate the speed of cooling engines or heating devices? And why?
4-Mention some malfunctions you have seen due to the fan speed regulator in your working life? Do you suggest a method to avoid or fix it?
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- AVcc RA=1kr NES5S Vout Oulput 3 9. .C2 -0.0luf figue 1. Refer to the ligure l: @ Calculate the loaing: O charge period @ discharge period Frequency of oscillation (Time Per Division= looms) the duty cycle ? ) In an astable multivibrator cirait, unhen we change the oscilloscope setting fram lo0 ms to 5ooms, what will happen for the waveform and cuhu2Prove that the fluctuation of voltage at the load end is largely a function of the reactive power, and the fluctuation system frequency is a function of the active power flowCharacteristic eqaution
- C. Explain the pinch-off voltage in a JFET.For the following circuit if the secondary voltage of the transformer is 20V rms, the output voltage and the PIV of the diodes are V. 2 Vm C3 D, D2 D3 A D4 C2 C4 + 2Vm 2Vm O 130.1 V, 55 V O 113.1 V, 56.56 V 123.2, 61.61 V 55.5 V, 33 VIn the given circuit, a step down transformer with an RMS voltage as 110V /11-0-11 V is used with RL = 1 KO. Assume diode as Germanium and the input frequency is F= 50HZ. D, CT Vin RL D2 1- Name the given circuit. 2- Find The PIV. 3- Find Current trough load resistance. 4- Draw the Input and Output wave forms. all
- explained with more information Series capacitor bank compensation for power factor improvement* Super Position 12A 6V Si talke S.A Capacitor filter is used at the output across the load to minimize the ripple factor of the output voltage. If R = 20 02 and the single- phase bridge rectifier is supplied from a 120V - 60 Hz sinusoidal source. Find the capacitor value in millifarads that will maintain the amount of the output ripples to less than 5% 艹 Ce = m₂ 0 mF RL%
- Calibri (Body) -11 by AaBbCcDx AaBbCcD AaBbC AaBbCc AaB AaBbCc. mat Painter BIU 1Normal 1No Spaci. Heading 1 Heading 2 Title Subtitle Chang Styles d Font Paragraph Styles IMPEDANCE QUIZ # 2 1. What capacitance when connected in series with a 500Q resistor will limit the current drawn from a 48-mV 465-kHz source to 20µA? * a. 144pF b. 145pF c. 146pF d. 147pF MY ANSWER: c.146pF 2. What is the total impedance at 20kHz of a series circuit consisting of a 1.5mH inductance, a 100Q resistance, and a 0.08uF capacitance? * a. 1340 41.7 b. 1930 L-37.2" C. 920 290 d. 530 2-12.6°iv. Change in DC voltage if capacitor increased to 100 F Vinm220 v f= 50 Hz Ns Np=15 R=10KNFor the following circuit if the secondary voltage of the transformer is 20V rms, the PIV of the diodes are ZV +1H +1 C3 D₂ D₁ 000 000000000 + C₁ O 55 V O 61.61 V 33 V O56.56 V C₂ HE 2V + m D3 + Ca H 2V