Consider the active load bipolar duff−amp stage in Figure 14.18. Assumethe circuit and transistor parameters are as given in Example 14.9. Using Equations (14.60(a)) and (14.60(b)), determine the offset voltage
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Microelectronics: Circuit Analysis and Design
- 6.8. In a single-phase mid-point converter, turns ratio from primary to each secondary is 1.25. The source voltage is 230 V, 50 Hz. For a resistive load of R = 2 2, determine (a) maximum value of average output voltage and load current and the corresponding firing and conduction angles, (b) maximum average and rms thyristor currents, (c) maximum possible values of positive and negative voltages across SCRs, (d) the value of a for load voltage of 100 V, (e) the value of voltage across SCR at the instant of commutation for a of part (d). Hint. (b) Maximum average thyristor current =; So 2n 0 [Ans. (a) 165.63 V, V. m R sin o d(at) etc. 82.82 A, a=0°, y= 180° (b) 41.41 A, 65.054 A (c) 520.4 V. 520.4 V (d) 52,862° (e) 414.82 V]arrow_forward{1OB/s 4.ll Asiacell Untitled docu... -> Q/ Derive mathematical expression to determine the stability factors of voltage-divider bias circuit?arrow_forwardQUESTION 1 Design a high efficiency 3.3 V, 5A d.c.to d.c. power converter from a 4 to 5.5 Vdc source. The maximum allowable inductor current ripple and output voltage ripple are 0.1A and 20 mV, respectively. Assume a switching frequency of 20 kHz. a) Design a suitable converter power circuit using a MOSFET switch, showing all calculation of inductor and capacitor values and drawing a circuit diagram of the final design including component values. Indicate the peak inverse voltage and forward current rating of any diode required, and the maximum drain- source voltage of the MOSFET. b) On the Schematic diagram, draw the path of the current flow during the ON time and the OFF time. c) Describe the effect of changing the values of the inductor and the capacitor in the circuit. d) What is the effect of switching frequency in the circuit? e) Draw the schematic diagram of a circuit with the output voltage higher than the input voltage.arrow_forward
- All field-effect transistors are unipolar rather than bipolar devices. That is, the main current through them is comprised either of through an N-type semiconductor * ..... .....arrow_forwardIn a full-bridge dc-dc converter using PWM bipolar voltage switching, analytically obtain the value of (V/V) which results in the maximum (peak-peak) ripple in the output current i,. Calculate this ripple in terms of Va, La, and farrow_forwardA signal generator having a source resistance of 50 2 is set to generate a 1 kHz sinewave. Open circuit terminal voltage is 10 V peak-to-peak. Connecting a capacitor. across the terminals reduces the voltage to 8 V peak-to-peak. The value of this capacitor is -HF. (Round off to 2 decimal places).arrow_forward
- 4.18 A chopper circuit is operating on TRC control mode at a frequency of 2 kHz of a 230 V dc supply. For output voltage of 170 V, the conduction and blocking periods of a thyristor in each cycle are respectively (a) 0.386 ms and 0.114 ms (b) 0.369 ms and 0.131 ms (c) 0.390 ms and 0.110 ms (d) 0.131 ms and 0.369 msarrow_forwardQuestion No. 2 a Inan experiment the voltage required for the device is 9V dc but unfortunately the transformer avai lable is of 220-6 V dc. Design a circuit which can power the device (use only methods that we have studied excluding Zener diode) b. Explain the behavior of the foll owing circuits if the input signal is triangular wave of peak voltage 5V and the biasing battery of 3V 4-arrow_forward8 e2 110 R3 R₂ R₁ Rf Rc=R3//R2//R1//Rf See Section 9.6 for offset balancing techniques Figure 4.6 Voltage summation + €2.03 eo=-Rf --[***] R₁ R2 R3 Optional for bias current compensation 4.1 In the circuit shown in Figure 4.6, input signals e₁, ₂ and e, are applied through input resistors 100 kn, 47 kn and 10 kn respectively. The feed- back resistor has a value 100 kn. If the operational amplifier is assumed ideal except for a finite open-loop gain of 80 dB what is the percentage error involved in the output sum?arrow_forward
- eliminate any redundant form...arrow_forwardA circuit responding to temperature is shown in figure 6. Assume the diode equation is given by Ia Ioe(qVa/kT). What is the DC operating point of the circuit at the temperature T. Also determine the small signal output swing Av, due to an incremental change in temperature AT. For this question assume Rį = 0. Heat T+AT V. DD D'B R₁ OV +AV Figure 6: Temperature sensorarrow_forwardSignal subject 2.arrow_forward
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