Voltage divider with ac bypasses capacitor, Electrical Engineering

Assignment Help:

Voltage divider with AC bypasses capacitor:

2419_Usage of voltage divider bias.png

Figure: Voltage divider with capacitor

The standard voltage divider circuit that is discussed above faces a drawback - AC feedback caused through resistor RE reduces the gain. This can be prevented by placing a capacitor (CE) in parallel with RE, as displayed in circuit diagram.

This capacitor is generally selected to have a low enough reactance at the signal frequencies of interest such that RE is necessarily shorted at AC, so grounding the emitter. Hence feedback is only present at DC to stabilize the operating point, in which case any AC benefits of feedback are lost.

Certainly, this idea can be employed to shunt only a portion of RE, hence retaining some AC feedback.


Related Discussions:- Voltage divider with ac bypasses capacitor

Rectifier, wave form of half wave rectifier with rl load

wave form of half wave rectifier with rl load

.energy, units of potential energy

units of potential energy

Explain about ''emitter follower'', Q. Explain about 'Emitter Follower'? ...

Q. Explain about 'Emitter Follower'? EMITTER FOLLOWER : An emitter follower circuit shown in the figure is widely used in AC amplification circuits. The input and output of the

Find voltage in circuit using the ideal op-amp technique, Q. Find v o in t...

Q. Find v o in the circuit shown in Figure by using the ideal op-amp technique.

Circuit, y more number of resistance and capacitor are used in a circuit w...

y more number of resistance and capacitor are used in a circuit what is the purpose to add ore than one..?

What do you mean by quartz crystals, Q. What do you mean by Quartz crystals...

Q. What do you mean by Quartz crystals? Synthetic quartz is composed of Silicon and Oxygen (Silicon Dioxide) and is cultured in autoclaves under high pressure and temperature.

Direct and indirect semiconductors, Direct and Indirect Semiconductors ...

Direct and Indirect Semiconductors 1) In a common quantitative calculation of band structures, the wave function of a single electron traveling by a perfectly periodic lattice

What is a microcomputer, What is a microcomputer? A computer that is de...

What is a microcomputer? A computer that is designed using a microprocessor as its CPU is known as microcomputer

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd