Electronics Engineering

Zener diodes are mainly used as voltage sources.

Since they provide a reasonably constant voltage drop, even when current changes, they are useful in small power supplies as voltage regulators.

plastc

we have to increase the winidin count of Coils inside the Alternator and also the Carbon mesh brush is to be increased so that the higher electric output will be produced................

Apex- leaning in one direction or another

It may be an attempt to apply a "catch all" phrase as an answer, but a sawtooth generator is used to supply sweep. And sweep is used widely in electronics applications. One application might be in the search for signals in a given frequency band using a spectrum analyzer. That band, that group of frequencies, would have to be "swept" by the receiver. It would have to tune in the different frequencies in order and on a continuous basis. By applying a sawtooth wave to a voltage controlled oscillator (VCO) used as the local oscillator in a receiver, the frequency of the VCO could be swept up the spectrum from a starting point to an end point, and then it could be done all over again continuously. The correct sawtooth voltage to the VCO would enable the receiver to make pass after pass across the band under study, and the strength of a signal on a given frequency could be indexed and shown on a display.

as per ohm law current is directly proportional to the applied voltage and inversely proportional to the resistance now u can calculat according to the formula by by putting the considered value and then by changing the values according to the question u will get the result to Analise the difference.

A: As base current increases the collector current increases to a point where any more base current will not increases the collector current at hat point the transistor is saturated whereby current may flow in both direction and the two diodes will essentially be in a parallel mode and the voltage drop from emitter to collector will reflect the status as a low voltage drop.

smaw and tig(gtaw) are using CC source. because these both types using manual wire feeding. so welder can not able to maintain constant arc length. change in arc length will change voltage. so it needs power supply which should not affected by this arc length = voltage changes. that's why CC type is used for these process. in CC type source change in voltage will not change current much.

Used the transformer. SO will be change 40vdc.

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Humm (no pun intended) - a DC transformer, must be something new in the market. A variable potentiometer will allow you to reduce the voltage to the required voltage you need. It will have to be of a higher wattage variety to dissipate the heat that will be generated depending on the wattage of the load at 40 volts.

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s-sum and c'-carry

see for half adder s=a(xor)b and c'=ab

for full adder s=a(xor)b(xor)c and c=ab+bc+ac or ab+c(a(xor)b)

we can convert two half adder to full adder with help of and or gate. . . !

we got two half adder

* for first half adder input is a and b

therefore. . .s=a(xor)b and c'=ab

* for second half adder input is a(xor)b and c

therefore. . .s=a(xor)b(xor)c and c' is (a(xor)b)c

note: now connect the c' of first half adder and second half adder to 'or' gate resulting is

ab+c(a(xor)b)

ANY METER needs some kind of current flow to operate. Internal in the meter there are batteries that provide current that when passed trough a resistor will develop voltage as a function of the current. the meter will read this current and display the resistor size to cause this current to flow.

Ic 7805 we are mostly used for regulator & its minimum input voltage is 7.2 V.

Sandeep Chauhan

A charger designed for a 12 volt battery should not be used to charge an 8.4V battery. It is likely to damage the battery and in the worst case can cause a fire.

There are some chargers that can be used with a variety of battery voltages and chemistries but unless you are certain that the charger is safe and effective on a different battery voltage, assume that it cannot be used.

hard one, well it could be referring too Close Circuitwas established to meet the needs of the events industry, providing high-end, professional security services, or possibly a ring circuit as its a continues flow from the consumer unit too the sockets or lights then back to the consumer for termination!??

By providing proper cooling and providing a circuit that produces an automatic means of reducing the current flowing through the device if its temperature starts to rise.

1)Short circuit test is performed at rated current. As the rated current on high voltage side is much less than low voltage side, so the rated high voltage side current is easily achieved compared to low voltage side.

2)Also because we cannot short circuit high voltage side, as, if we short circuit high voltage side, voltage of high voltage side essentially falls to zero and since VI=constant, so the high voltage side current will be very high and will burn the winding.

"Biasing" applies to transistor amplifier circuits. Simple amplifier circuits can only amplify positive signals. Negative signals cause the amplifier to shut down. However, AC signals in general have both a positive and a negative part. To allow a transistor to amplify AC, we add a positive voltage to the AC signal. Then after it is amplified, we remove the positive voltage again.

The voltage, ac or dc on the base, compared to the emitter to cause operation of the transistor to conduct to the collector or to the emiiter in a NPN transistor.

It is 6 times 8 and the answer is in volts.

The type of cable that enables the longest transmission with the lowest loss is called Goubau line, or G-line, for short. This line has far less loss than either coaxial cable or parallel line (twinlead). By using conical shaped "launchers", G-line creates a type of waveguide.

The bandwidth of impulse signal is infinity.because upper frequency is infinity.

Primarily because digital systems are more accurate. Additionally, digital technology is replacing older systems with modern devices because digital devices are often much smaller, and require less maintenance.

Ohm's Law

Voltage = Current x Resistance

Power inverters work as an electrical converter which allows a direct current to change into alternating current. This is the commonly known as a DC-AC power conversion. In short, inverters work the opposite as rectifiers that converts AC or alternating current into DC or direct current.