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Because of the above inherent drawbacks, fixed bias is seldom used in linear circuits (that is those circuits which use the transistor like a current source). Instead, it is frequently used in circuits where transistor is employed as a switch. Though, one application of fixed bias is to achieve crude automatic gain control in the transistor via feeding the base resistor from a DC (direct current) signal derived from the AC (alternating current) output of a later stage.
a) State the principle of working of transformer. b) A 230/110 V, single-phase transformer takes an input of 350 volt-amperes at no load while working at rated voltage. The core
Q. What are the features of clamping circuits? The clamping circuit does not change the peak to peak or r.m.s value of the waveform .Thus the input waveform and clamped output
Armature Reaction in DC Generator: Armature reaction is the effect of magnetic flux set up by armature current upon the distribution of flux under the main poles.
Find the core radius necessary for a single mode operation at 1320nm of a step index fibre with n 1 =1.48 and n 2 =1.478. What are the N.A and maximum acceptance angle for this fib
What do you understand by solid modeling and wireframe modeling in CAD systems? Explain and compare the both modellings. Describe the following 1. Boundary representation 2.
calculating different op amps
Composition of MOSFET In a test pattern the Photomicrograph of two metal-gate MOSFETs. Probe pads for two gates and three source or drain nodes are entitled.Generally the se
Explain the significance of V number. Ans: V number or V parameter or normalized cutoff frequency is one of the parameter which is used to calculate the maximum number o
1. A modi?ed NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; invert- ing bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make
Shunt clippers are preferred over series clipper??
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