51951. Refer to the given figure. If the load is short-circuited, what would be the maximum current through R1?
51952. In an improved shunt regulator, which of the following components sets the reference voltage?
51953. ________ regulation can be defined as the percentage change in the output voltage for a given change in load current.
51954. How many diodes conduct in the full-wave bridge rectifier while the capacitor is being charged?
51955. Refer to the given figure. If a solder splash shorted the ends of R1 to each other,
51956. Calculate the ripple of a capacitor filter for a peak rectified voltage of 40 V, a capacitor value C = 75 F, and a load current of 40 mA.
51957. How many terminals does a 7800 series IC regulator have?
51958. What are the typical values of Vref and Iadj for the LM317 adjustable voltage regulator?
51959. In this op-amp series regulator circuit, which of the following components is the comparator circuit?
51960. Which component(s) set(s) the voltage across the load in a basic transistor shunt regulator?
51961. Voltage regulation requires
51962. Across which of the following components of a power supply does the average (dc) voltage exist?
51963. Switching regulators are more efficient than linear regulators and are particularly useful in ________-voltage, ________-current applications.
51964. For what range of load current can voltage regulators be selected for operation?
51965. The 7905 regulator IC provides ________.
51966. What type of regulator offers inherent short-circuit protection?
51967. Refer to the given figure. The inductor and capacitor are used for
51968. Refer to the given figure. If the BE junction of Q1 opens, the output voltage VOUT will
51969. This circuit is an example of the ac equivalent of an RC filter.
51970. Refer to the given figure. If the output voltage tends to decrease due to an increase in load current, the transistor will conduct for ________ time each cycle.
51971. The larger the value of the capacitor, the smaller the peak current drawn through the rectifying diodes.
51972. In a shunt linear regulator, the control element is a(n) ________ in parallel with the load.
51973. For what range of fixed regulated voltages do the series 78xx regulators provide regulation?
51974. In a series linear regulator, the control element is a(n) ________ in series with the load.
51975. What regulated output voltage is provided for the following circuit elements: R1 = 15 k, R2 = 35 k, and VZ = 11.2 V?
51976. ________ regulation can be defined as the percentage change in the output voltage for a given change in the input voltage.
51977. A ________ -wave rectified signal has less ripple than a ________ -wave rectified signal and is thus better to apply to a filter.
51978. The ________ is (are) an adjustable voltage regulator.
51979. The ________ the ac variation with respect to the dc level, the ________ the filter circuit's operation.
51980. In a current-limiting circuit, ________ provide(s) the limiting of the maximum load current.
51981. IC units provide regulation of ________.
51982. The ________ values of capacitor filter provide ________ ripple and ________ average voltage.
51983. A complete power supply has a ________.
51984. If the value of the full-load voltage is the same as the no-load voltage, the voltage regulation calculated is ________.
51985. The ________ the voltage regulation, the ________ the operation of the voltage supply circuit.
51986. In a half-wave rectifier, the dc voltage level is ________ the ripple voltage level.
51987. The ________ the diode conduction time, the ________ the amount of the charging current through the capacitor filter.
51988. In a foldback configuration, limiting the current reduces ________, protecting the load from overcurrent as well as protecting the regulator.
51989. The ripple voltage Vr is a result of the ________.
51990. Regulator IC units contain the circuitry for the ________.
51991. A full-wave rectified signal has ________ dc component and ________ ripple than (as) the half-wave rectified voltage.
51992. The series 7900 ICs are ________.
51993. The charging and discharging of the capacitor filter take ________ of the period of the input voltage.
51994. The frequency of the output voltage of a full-wave rectifier is ________ the frequency of its input voltage.
51995. A type of regulator circuit that is quite popular for its efficient transfer of power to the load is the ________.
51996. The output resulting from a rectifier is a(n) ________.
51997. In a full-wave rectifier, the dc voltage level is ________ the ripple voltage level.
51998. In a full-wave rectifier, if no load were connected across the capacitor, the output voltage would ideally be a(n) ________.
51999. The output of a loaded power supply is ________ that of the unloaded.
52000. The filter output voltage of a power supply ________ when load current is drawn from the supply.