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Q. Explain the working principle of an opto coupler?
When it is necessary to block the voltage between one electronic circuit and another, and transfer the signal at the same time, an amplifier coupling capacitor is often used as shown in figure given below. Although this method of coupling does block dc between the circuits, voltage isolation is not complete.
A newer method, making use of optoelectronic devices to achieve electrical isolation, is the optical coupler, shown in figure given below. The coupler is composed of an LED and a photodiode contained in a light-conducting medium. As the polarity signs in figure show, the LED is forward biased, while the photodiode is reverse biased. When the input signal causes current through the LED to increase, the light produce by the LED increases. This increased light intensity causes current flow through the photodiode to increase. In this way, changes in input current produce proportional changes in the output, even though the two circuits are electrically isolated.
Balanced Wye-Connected Load Let us consider a three-phase, four-wire 208-V supply system connected to a balanced wye connected load with an impedance of 10 20° , as shown in F
if a resistor present in the middle of two branches in such a way that their polarities coincide then how do we choose the polarity of that resistor
The subsequent voltage-source multiplying DAC is to be utilized to convert the digital data stream "11" and "01" to an analog signal. It has 2-bit inputs and hence is capable of c
Figure shows the block diagram of an aircraft pitch stabilization system which uses position, velocity and acceleration feedback. i) Show that for a unit step input the steady s
Q. How to convert Binary to Decimal number system? It is extremely easy to convert from a binary number to a decimal number. As like the decimal system, we multiply each digit
A microstrip antenna system operating at 915MHz must be designed using Rogers RO3010 substrate with the thickness of 0.635mm.
A three-phase, 5-hp, 220-V, six-pole, 60-Hz in- duction motor runs at a slip of 0.025 at full load. Rotational and stray-load losses at full load are 5% of the output power. Calcul
Flex Routing : You can see that your labour will have been in vain unless you take steps to ensure that flexes are routed safely and well clear of possible sources of danger.
#The requirement is as follows- There is a signal which is in the range of 0 to 5Hz. This signal frequency composition is to determined. The resolution of the determination is 1Hz.
A universal shift register can shift in both the left-to-right and right-to-left directions, and it has parallel-load capability. Draw a circuit for such a shift register.
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