transmit to receive‚ and vice-versa. Full- Duplex – Telegraph or other data channel able to operate in both directions simultaneously. Photodiode – A semiconductor diode in which the reverse current varies with illumination; examples include the alloy-junction photocell and the grown-junction photocell. Also known as photoconductor diode. Amplitude Modulation - The encoding of a carrier wave by variation of its amplitude in accordance with an input signal. A broadcast system that uses amplitude modulation
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Theory CONDUCTORS‚ INSULATORS AND CONDUCTIVITY Conduction of electricity in electric circuits takes place due to the presence of excess electrons in materials called conductors. Electrons move in the direction in which the potential has been applied. The ability of a conductor to conduct electricity is directly proportional to the material’s area of cross section and inversely proportional to its length. Where‚ G is conductance σ is conductivity A is area of cross section
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Unit 1 What is inside an atom? * A positively charged nucleus composed of protons and neutrons * Electrons that surround the nucleus What are isotopes? Isotopes are atoms with the same number of protons and different numbers of electrons How do we represent different atoms? What is specific charge? The specific charge of a particle is defined as its charge divided by its mass What keeps protons and neutrons in a nucleus together? A stable isotope has nuclei that do not disintegrate
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at synapse (or neuromuscular junction [NMJ]) • Impulse causes depolarisation at synaptic knobs • Release of neurotransmitter [NT] from vesicles into synaptic cleft (> 40 known NTs) • Diffusion of NT across synaptic cleft • NT acts on postsynaptic receptors (motor end plates [MEPs] at NMJ) – most NTs excitatory‚ some inhibitory) • Depolarisation of postsynaptic membrane • Conduction of impulse along the next neurone or activation of effector organ Fate of PNS neurotransmitters • Acetylcholine
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across two terminals by means of a small control current or voltage applied at a third terminal. amplification consists of magnifying a signal by transferring energy to it from an external source The Field Effect Transistor(FET) | The bipolar Junction Transistor (BJT) | is an active device(gate ‚ drain ‚ source)it is a voltage controlled valve.The gate voltage VGS controls the drain current (1D). | is an active deviceis a three-element (emitter‚ base‚ and collector )it is a current control
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_____________Download from www.JbigDeaL.com Powered By © JbigDeaL____________ Q. No. 1 – 25 Carry One Mark Each 1. Consider the following statements regarding the complex Poynting vector P for the power radiated by a point source in an infinite homogeneous and lossless medium. Re P denotes the real part of P . S denotes a spherical surface whose () ɵ centre is at the point source‚ and n denotes the unit surface normal on S. Which of the following statements is TRUE? () (B) Re (P ) increases with
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OHM’S LAW INTRODUCTION Ohm’s law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points‚ and inversely proportional to the resistance between them provided the temperature remains constant. The mathematical equation that describes this relationship is: where V is the potential difference measured across the resistance in units of volts; I is the current through the resistance in units of amperes and
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HBeonLabs Off. No. 46‚ 1st Floor‚ Kadamba Complex Gamma-I‚ Greater Noida (India) - 201308 Contact us: +91-120-4298000 +91-9212314779 info@hbeonlabs.com training@hbeonlabs.com www. hbeonlabs.com ELECTRONIC VOTING MACHINE INTRODUCTION This project is design for the student to make them understand the technology used in a now a day’s voting machine system‚ which is used in whole world. These voting machines are equipped with the CPU‚ which control the voting machine. The voting
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As the name implies‚ connective tissue serves a "connecting" function. It supports and binds other tissues in the body. Unlike epithelial which has cells that are closely packed together‚ connective tissue typically has cells scattered throughout an extracellular matrix of fibrous proteins and glycoproteins attached to a basement membrane. Loose Connective Tissue In vertebrates‚ the most common type of connective tissue is loose connective tissue. It holds organs in place and attaches epithelial
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then fed to a Bridge rectifier which converts AC into DC. Then DC output of Bridge rectifier is used to drive the audio-visual alarm circuit‚ connected in parallel. Audio alarm circuit uses a buzzer while visual alarm circuit uses a light emitting diode (LED) connected in series with current limiting resistance. Both‚ audio and visual alarm circuits provide a leakage current alarm (audio-visual) indication‚ which is proportional to the
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