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

Security alarm system, In this Project you will simulate a Security Alarm s...

In this Project you will simulate a Security Alarm system using the Quick flash board. A switch is placed as shown in the figure below. The main goal of this project is: Task 1:

Show limitations of microprocessor-based control systems, Q. Show limitatio...

Q. Show limitations of microprocessor-based control systems? Practical limitations of microprocessor-based control systems stem from the following considerations: • Finite-w

Find an expression for the total flux, Q. A rectangular loop is placed in t...

Q. A rectangular loop is placed in the field of an infinitely long straight conductor carrying a current of I amperes, as shown in Figure. Find an expression for the total

Digital ecectronics, DISIGN A FENITE STATE MACHINE TO DETECT THE SEQUENCE 1...

DISIGN A FENITE STATE MACHINE TO DETECT THE SEQUENCE 10110

Show jkff connected as a t flip-flop, Q. For a JKFFwith JK = 11, the output...

Q. For a JKFFwith JK = 11, the output changes on every clock pulse. The change will be coincident with the clock pulse trailing edge and the flip-flop is said to toggle, when T = 1

Management of Initiatives and Focus - KPI, Management of Initiatives and Fo...

Management of Initiatives and Focus - KPI In this era of fierce competition and to have the competitive edge, it is significant to conserve the material and human resources th

Wcdma, what is that mean and explain

what is that mean and explain

Determine the number of poles of this ac motor, Q. A three-phase ac motor, ...

Q. A three-phase ac motor, used to drive a draft fan, is connected to a 60-Hz voltage supply. At noload, the speed is 1188 r/min; at full load, the speed drops to 1128 r/min. (a

Explain the term simplex transmission, Explain the term simplex transmissio...

Explain the term simplex transmission. Data in a simplex channel is always one method. Simplex channels are not frequently used because this is not possible to send back error

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