P13a The resistance of a Thermal resistor changed from 20 ohms to 22.5 ohms, when the temperature changed from 35°C to 42°C. Find the sensitivity of thermistor?
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- For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature setting of ___________ F (_____________ C). Some states have laws stating a maximum temperature setting of ____________ F (________________ C).Make the control circuit made up of a TRIAC and an optocoupler, for one: 2000W lamp, 120vac You must choose from the following elements: optocoupler: OPTO 1: MOC3021 OPTO 2: MOC3051 Transistor: TRIAC 1:Q20115L5 TRIAC2:Q2025R5Exe 1. A half-wave rectifier has a source of 120 V rms at 60 Hz and an R-L load with R=10 Ω and L= 10 mH.Determine, an expression for the load current, the average current, the power absorbed by the resistor, and the power factor. Hint: Beta=3.5 Rad
- 1. (a) Determine the minimum acceptable value of Rs for the zener voltage regulator circuit shown inFigure 1. The zener specifications are: Vz = (14) V; Iz = (7) mA; Iz(max) = 100 mA(b) Determine the maximum load current, and(c) Determine the maximum allowable value of Rs for the zener voltage regulator shown in Fiugre 1.Q. The IC used in OPAMP is LM 741. True FalseA group of UTAS-Nizwa students are working on a project entitled "Gas leak detector alarm" for their final year in Diploma level. The circuit works on DC voltage of 16 volts and DC current of 7 milliampere. Students need to design a power supply circuit for their project. Consider an RMS voltage input of 220 volt, 60 Hz. Using a Full Wave Bridge Rectifier with Transformer, Silicon diode and Capacitor Filter, Design the power supply. a. Compute for the load resistance, peak output voltage, input peak voltage to the diodes (secondary voltage), peak input voltage and the turns ratio of the transformer. 1. What is the value of the load resistance? b. Draw the Power Supply circuit (capacitor filter connected in parallel with the resistor) and write the computed values (No value for the capacitor).
- Answer in Sentence/Paragraph form. Maximum of 5 sentences each. Lesson: Electronics: FULL-WAVE Rectifier with and without Filter1. What is the necessity of the transformer in the recitifer circuit?2. What are the applications of the rectifier? 3. What is meant by ripple and define ripple factor. 4. Explain how capacitors helps to improve the ripple factor. 5. Can a rectifier made in India (V=230 V , f=50Hz) be used in USA (V=110V, f=60Hz)?Single phase half wave controlled rectifier supplied from 150 V if the load is 10 ohm if the delay angle a =30 Find : 1- maximum load current 2-average load voltage 3- average load current 4-RMS load current 5-power supply to the load 6-conduction angle 7-power factorThree-phase half wave rectifier supply resistive load with DC power of 4 kW; the ammeter connected with D1 indicates 8 A r.m.s current, and the source frequency is 50 Hz Due to system inductance the average voltage drops to 96.2% of idealized value ( when the inductance is neglected). How much will the average and r.m.s voltage s be? The r.m.s phase current and average load current Is=? & Idc=? The secondary r.m.s voltage and transformer capacity Vs & KVA? The inductances causes the voltage drop Lc=? The diode forward current and maximum inverse voltage? Now, if the phase B is failed ( disconnected), how much with new dc voltage be in %..Vdc=….% ??
- Design a DC power supply using FWR to perform the following requirements. Find V_dc, V_rms, V-ripple, PIV of the diode. draw the waveform of (V_in, V_out, L_in, I_load, V_diode and I_diode). Input voltage = 25 Transformer turn ratio 0.1 load resistance = 1k ohm Ripple factor = 0.025 Diode type =SiIn an AC to DC rectifier circuit, the output DC signal of the rectified wave was measured to beVDC= (6.8±0.5)V and its ripple voltage was measured to be Vripple=(0.05±0.02) mV. What is the uncertainty on the quality factor of the rectifier? (Report your final value to 2 sig figs)A 60-Hz full-wave rectifier is built with a transformer having an rms secondary voltage of 20 V and filter capacitance C =150,000 μF. What is the largest current that can be supplied by the rectifier circuit if the ripple must be less than 0.3 V?