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

Advantages and disadvantages of rc coupled amplifier, Q. Advantages and Dis...

Q. Advantages and Disadvantages of rc coupled amplifier? Advantages 1. Aids excellent frequency response.The gain is constant over the audio frequency range 2. It has l

1-phase half bridge inverters, 1- Φ Half Bridge Inverters 1-Φ bridge  ...

1- Φ Half Bridge Inverters 1-Φ bridge  inverter may be  of two  type 1-? half  bridge  and 1-? full  bridge  inverter. 1-? half bridge  inverter with resistive load to explain

Emi, what is strain gage

what is strain gage

Explain the working of rectifier circuits, Q. Explain the working of Rectif...

Q. Explain the working of Rectifier Circuits? A simple half-wave rectifier using an ideal diode is shown in Figure(a). The sinusoidal source voltage v S is shown in Figure (b)

Circuit theory ., it''s 3 assignments and each assignment have 7 questions ...

it''s 3 assignments and each assignment have 7 questions so each assignment have 1 hour when I open it I have only 1 hour to finish it I can show him or her the practice question t

Explain working of electrically erasable programmable rom, Q. Working of El...

Q. Working of Electrically erasable programmable rom EEPROM is used for remote-area applications. The device is provided with special pins which, when activated electrically, a

Compute the terminal voltage and current of each generator, Q. Three dc gen...

Q. Three dc generators are operating in parallel with excitations such that their external characteristics are almost straight lines over the working range with the following pairs

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