VBB RB ww RC Q Vcc

Convert a dc voltage Q7)------ from one level and a certain polarity to a dc voltage of another level and in some applications to another polarity. Oa. DC-AC Converter Ob. AC-AC converter Oc. DC Chopper Od. AC-DC rectifier

Given: Np = 5 turns fin = 57 Hz Ns = 1 turn Vp = 138 Vac

To improve the energy efficiency of a synchronous rectifier, (a) A low voltage MOSFET with a very low rɔ5(m) and a high voltage BJT with a very low on-state voltage are used (b) A high voltage MOSFET with a very low rɔs(om) and a low voltage BJT with a very low on-state voltage are used (c) A low voltage MOSFET with a very low rɔs(cm) and a low voltage BJT with a very low on-state voltage are used (d) A high voltage MOSFET with a very low sm) and a high voltage BJT with a very low on-state voltage are used

In the QPSK modulator in the figure shown, the reference oscillator (as can be seen in the figure) is sinwct. Change the reference oscillator to coswct and plot the new constellation diagram

A full-wave rectifier produces a 32V peak rectified voltage from a 50Hz ac source. Determine the filter capacitor needed to provide a DC output voltage 24V across a 500 ohm load.

True or False answer all with brief explain

How would you add the thermal interfaces of a heatsink using the concept of thermal resistance? Specifically the thermal resistance between ambient temperature and the case of the IC and the case of the IC and the junction of the IC. 1. RCA in series with RJC    or     2.  RCA in parallel with RJC

LTE .!!: 0:00 docs.google.com a What will be the out put of the D'Arsonval meters, if an average responding a.c meter of half-wave rectifier read (2.36 v), and true form factor of input waveform is (1.414). 3 volt 1.5 volt 1 volt 2.36 volt If the value of waveform does not remain constant with time, the signal is referred to as direct (d.c) signal * True False •.. 6 +

What is CEMF?