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Q. Schematic Diagram of LED based System ?
As shown in the two schematic diagrams above, the LEDs in a seven-segment display are not isolated from each other. Rather, either all of the cathodes, or all of the anodes, are connected together into a common lead, while the other end of each LED is individually available. This means fewer electrical connections to the package, and also allows us to easily enable or disable a particular digit by controlling the common lead. There is no advantage of the common-cathode seven-segment unit over the common-anode version, or vice-versa. Each type lends itself to certain applications, configurations, and logic families.
How is bias compensation in transistor is done using thermistors and sensistor
Q. Illustrate Transformer coupling? In this method the primary winding of the transformer acts as a collector load and the secondary winding transfers the a.c. output signal di
1. Calculate the combined resistance of three resistors connected in series with resistance of 20 ohm, 30 ohm and 40 ohm? (to achieve a pass grade, solve problems with resisto
Q. A BJT is biased by the method shown in Figure. If V BEQ = 0.7V, β = 100, V CEQ = 10 V, and I CQ = 5 mA, find I 1 , I 2 , and IEQ.
Q. Consider the op-amp circuit of Figure. Sketch the waveforms of v S and v o , if v S is a sinusoidal voltage source with a peak value of 2.
Energy band: the energy band picture for Ii an- type, and Iii ap - type semiconductor Indicate the position for, the donor and acceptor levels. Sol.(a)
Q. Obtain the truth table for the logic block shown in Figure
A 200-V dc shunt motor has a field resistance of 200 and an armature resistance of 0.5 . On no load, the machine operates with full field flux at a speed of 1000 r/min with an a
Q. If a single phase motor fails to run or start slow what action to be taken. Ans: If it is not starting check the supply and test the winding if it found normal check
advantages and disadvantages of thevenins theorem
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