Knowledge in Ece notes
Feedback & Oscillator Circuits
An oscillator is an electronic device for generating AC signal voltage. Oscillators generate sinusoidal or non-sinusoidal waveforms from very low frequency to very high frequencies. In this course, you'll learn about Feedbacks in Opamps and oscillators. This is the course usually taught in Electronics and Communication engineering.
AAYUSH LAL ROY
Sequential Network
Sequential networks are the logic networks with memory. An example is a single input single output network that produces 1 iff three consecutive l’s appear in the inputs. Sequential networks are represented by state diagrams or state tables. Flip-flops are used for memory elements. Design of a sequential network is done as follows: First, minimize the number of states. Second, assign a binary code to each state. Third, allocate flip-flops. And, finally, realize the networks for flip-flops and outputs.
Resonance Circuits
Electrical resonance occurs in an electric circuit at a particular resonant frequency when the impedances or admittances of circuit elements cancel each other. In some circuits, this happens when the impedance between the input and output of the circuit is almost zero and the transfer function is close to one.[1] Resonant circuits exhibit ringing and can generate higher voltages and currents than are fed into them. They are widely used in wireless (radio) transmission for both transmission and reception.
Measuring Instruments and Bridges
A bridge circuit is a topology of electrical circuitry in which two circuit branches (usually in parallel with each other) are "bridged" by a third branch connected between the first two branches at some intermediate point along them. The bridge was originally developed for laboratory measurement purposes and one of the intermediate bridging points is often adjustable when so used. Bridge circuits now find many applications, both linear and non-linear, including in instrumentation, filtering and power conversion.
8086 bus configurations and timings
Intel 8086 is a 16-bit HMOS microprocessor. It is available in 40 pin DIP chip. It uses a 5V DC supply for its operation. The 8086 uses 20-line address bus. It has a 16-line data bus. The 20 lines of the address bus operate in multiplexed mode. The 16-low order address bus lines have been multiplexed with data and 4 high-order address bus lines have been multiplexed with status signals.
Time varying field and Maxwell Equation
Electrostatic fields are usually produced by static electric charges whereas magnetostatic fields are due to motion of electric charges with uniform velocity (direct current) or static magnetic charges (magnetic poles); time-varying fields or waves are usually due to accelerated charges or time-varying current. Stationary charges Electrostatic fields Steady current Magnetostatic fields Time-varying current Electromagnetic fields (or waves)
Golay Code
n mathematics and electronics engineering, a binary Golay code is a type of linear error-correcting code used in digital communications. The binary Golay code, along with the ternary Golay code, has a particularly deep and interesting connection to the theory of finite sporadic groups in mathematics.
FIR Filter
In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite duration, because it settles to zero in finite time.
Spread Spectrum Modulation
Frequency hopping is a basic modulation technique used in spread spectrum signal transmission. ... Spread spectrum generally makes use of a sequential noise-like signal structure to spread the normally narrowband information signal over a relatively wideband (radio) band of frequencies.
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