A led spot of power 8w and efficacy 75lm/w, has utilization factor of 0.352, lumen received on the working plane will be: Select one: O211.2 lumens O 300 lumens O 192.8 lumens O 210.8 lumens
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- What is CEMF?Z01 @ C Asiacell l. positive clipper negative cli 03_diode_clipper_clamper_multiplie... pi 5/12 7. Questions: A. The positive peak voltage of a positive clipper is: 1- 0 V 2- 0.6 V 3- Equal to the input peak voltage 4. 1.2 V B. Why is the positive peak voltage in the negative clipper not cut? 1- The diode is forward biased 2- The diode is reversed biased C. In a positive polarized clipper we found the voltage source in series to the diode equal to be +5V. Which is the cut level of the positive voltage? 1- 0.6 2- Equal to the input peak voltage 3- 5 V 4- 5.6 V 6/12In the figure below, calculate the following (use the second diode approximation): NiNg D₁ 6:1 Si Vp 120 Vac 60 Hz (a) Vs (b) Vout(pk) (c) Vdc V₂ D₂ 十 Si R₁-500 out (d) IL (e) PIV for D₁ and D₂ (f) fout
- ide cal diode effechive value Frequency equal to 60 He. the voltage ripple at the terminals of R is equeal the source is sinu soidal, with equal to120V and a to 6.06 % of the arerage value of he voltage of R. at the terminals value of Hhe vollage the cueraye value of the volkage R is ĕ guual to: across O lo5 V l10 v (3 165 V 160 Vo': Assuming the ideal diode model (VoN=0 V), calculate VoUT for the cireuits in Figures (b) and (c) for the following input voltages (your answers should be in a table similar to that given below) VIO VIO VOUT,b VOUT,C v20- v20- (b) (c) VI V2 5 5 53.- Suppose that each diode in the circuit shown in figure N°2 has a turn-on voltage of Vy=0.7 volts. Determine the value of Vo and Vi +5v 9.5k D1 +2v 0.5k V1 D2 No 2 +4v 0.5k w Fig. D3 D4 1k O Vo 0
- For the clamper Circuit Solve for the Vo and Vc. Assume ideal diode condition. C1 C2 7 1µF V1 Y 02 1µF V3 D1 R1 Vo 10V 1kHz R2 10V 1kHz 8 1kQ 0° 1kQ V2 0° V4 2 4V 6. T 4V Circuit D Circuit E Ciuuit DWhat is wrong in this diode? Mullimeter XMMI 35.733 M2 1 dB XMM1 IDEAL DIODE Set O A. Short Circuit O B. None of them O C. Nothing is wrong O D. Not enough data to answer this question O E. Open CircuitExercises: Determine VO and Ifor each circuit in figures. Assume that each of the diode in these circuits has a forward voltage drop of 0.7 V. V₁. D 1.1.2 D V. $5.140 1.V₁=V₁=OV. 2.V₁ =V₁=SV, and 3.V=OV & V, -5V. (d) C C ΣΙΩ T-15V D₂ +201 20 V₂ 14.02 I-15V 1. No pulses at either A or B. 2.A 30 V positive pulse at A or B, and 3. Positive pulses (30 V) at both A and B. (e)
- Jump to i) If the input is 10V sine wave, plot the output voltage. The Zener voltage of D1, D2 and D3 are 3.2 V, 3V and 2.8V, respectively. ( R1 ww D1 D2 Vout D3 (ii)Find the output voltage waveform if Vin-150 V and N=3. Assume non ideal diode. D1 D4 D2 RL V out urns Ratio is N:1. lllDesign an Voltage amlifier to am plify 150 mV U P to 5 v. with the necesjary calcalations and drawing of the electrical circutin det ail. Solution:q5 A certain voltage doubler has 20 V rms on its input. What is the output voltage? Draw the circuit, indicating the output terminals and PIV rating for the diode.