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the power is turned off and the upper end of r1 is grounded in fig 3-23b now you use an ohmmeter to read the forward
1 a silicon diode has a forward current of 500 ma at 1 v use the third approximation to calculate its bulk resistance2
1 an unloaded zener regulator has a source voltage of 24 v a series resistance of 470 and a zener voltage of 15 v what
1 while troubleshooting a power supply you find a resistor burned black a measurement shows that the resistor is open
1 heres a pencil and paper tell me how a bridge rectifier with a capacitor-input filter works in your explanation i
1 excessive current or voltage can destroy the diodes in a power supply draw a bridge rectifier with a capacitor-input
1 i want you to tell me how a peak-to-peak detector works then i want you to tell me in what ways a voltage doubler is
1 in what power-supply application might i prefer to use an lc-type filter instead of the rc-type why2 what is the
1 a dc power supply is supposed to have an output of 5 v you measure exactly 5 v out of this supply using a dc
if the series resistor of prob 5-1 has a tolerance of plusmn5 percent what is the maximum zener currentprob 5-1an
1 draw the schematic diagram of a zener regulator with a supply voltage of 20 v a series resistance of 330 a zener
during the day the ac line voltage changes this causes the unregulated 24-v output of the power supply to vary from 215
figure 5-47 shows part of a bicycle lighting system the diodes are schottky diodes use the second approximation to
in fig 5-45 the led does not light which of the following are possible troublesa v130la2 is openb ground between two
1 if the lead temperature of a 1n4736a zener diode rises to 100degc what is the diodes new power rating2 in fig 5-44
1 a zener diode has a voltage of 10 v and a current of 20 ma what is the power dissipation2 a 1n5250b has 5 ma through
the unregulated voltage in fig 5-44 may vary from 18 to 25 v and the load current may vary from 1 to 25 ma will the
in fig 5-44 the unregulated voltage out of the power supply may vary from 20 to 26 v and the load resistance may vary
assume the supply voltage of fig 5-44 decreases from 24 to 0 v at some point along the way the zener diode will stop
for the boolean functiona obtain the truth table of fb draw the logic diagram using the original boolean expressionc
1 calculate the value of the gibbs function for saturated steam at 500degf as a saturated liquid saturated vapor and a
a liquid-vapor mixture of refrigerant-134a is at 280 kpa with a quality of 70 percent determine the value of the gibbs
1 using solubility data of a gas in a solid explain how you would determine the molar concentration of the gas in the
1 water is sprayed into air at 80degf and 143 psia and the falling water droplets are collected in a container on the
water vapor h2o is heated during a steady-flow process at 1 atm from 298 to 3000 k at a rate of 02 kgmin determine the