Quantcast Figure 3-24.Half-wave rectifier capacitor filter (negative input cycle)

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
3-19 Figure 3-23.—Half-wave rectifier capacitor filter (positive input cycle). When the circuit is energized, the diode conducts on the positive half cycle and current flows through the circuit allowing C1 to charge. C1 will charge to approximately the peak value of the input voltage. The charge is less than the peak value because of the voltage drop across diode V1. The charge on C1 is indicated by the heavy, solid line on the waveform. As illustrated in figure 3-24, the diode (V1) cannot conduct on the negative half cycle because the plate of V1 is negative in respect to the cathode. During this interval, C1 discharges through load resistance RL. The discharge of C1 produces the downward slope indicated by the solid line on the waveform in the figure. Figure 3-24.—Half-wave rectifier capacitor filter (negative input cycle). During the discharge period, in contrast to the abrupt fall of the applied ac voltage from peak value to zero, the voltage across C1 (and thus across RL) gradually decreases until the time of the next half cycle of rectifier operation. Keep in mind that for good filtering, the filter capacitor should charge as fast as possible and discharge as little as possible. Since practical values of C1 and RL ensure a more or less gradual decrease of the discharge voltage, a substantial charge remains on the capacitor at the time of the next half cycle of operation. As a result, no current can flow through the diode until the rising ac input voltage at the plate of the diode exceeds the voltage of the charge remaining on C1. The charge on C1 is the cathode potential of the diode. When the potential on the plate exceeds the potential on the cathode (the charge on C1), the diode again conducts, and C1 commences to charge to approximately the peak value of the applied voltage. After the capacitor has charged to its peak value, it begins to discharge. Since the fall of the ac input voltage on the plate is considerably more rapid than the decrease on the capacitor voltage, the cathode quickly becomes more positive than the plate, and the diode ceases to conduct.


Electrical News
Silicon Valley's Longest-Serving CEO Beginning New Chapter
With the impending close of Microchip's $840 million acquisition of...
eetimes.com
EEVblog #774 – Low Battery Discharge Testing Part 1
Dave shows how to do discharge testing on AAA and...
eevblog.com
Perambulating & Texting -- Dazed & Confused
It seems that walking while texting is becoming endemic; so...
eetimes.com
IBM Takes A Second Turn at PCM Drift
Another approach taken by IBM and Macronix to address phase...
eetimes.com
The Next Big Thing Is The Continuum
What will come next for us? Internet of Everything, wearables,...
eetimes.com
Making EDA Exciting Again
There are still plenty of exciting challenges out there for...
eetimes.com
Turing Test -- Are You Talking to a Human or a Machine?
Imagine you are allowed to pose five questions to determine...
eetimes.com
MediaTek Cautions 'Weak Demand' for Handsets
MediaTek has pared its expectations for 2015 as a result...
eetimes.com
Patent Search Supports View 3D XPoint Based on Phase-Change
Is 3D XPoint non-volatile memory really just a version of...
eetimes.com
Industrial Automation Companies Combine
Japan's Omron is acquiring US-based Delta Tau Data Systems....
eetimes.com
Friday Quiz: Oscilloscopes
So, you use an oscilloscope every day? Well then, you...
eetimes.com
Hybrid Solar Cells Capture More
Solar cells today waste as much as 44 percent of...
eetimes.com
Google Street View Cars Test The Air
Environmental sensor firm Aclima has partnered with Google to test...
eetimes.com
Inventables X-Carve LIVE Build Part 3 + Batteriser Rant
Part 3 of Dave & David2 assembling the Inventables X-Carve...
eevblog.com
Inventables X-Carve Time Lapse Build
Time lapse footage of Dave & David 2 assembled the...
eevblog.com
Samsung's Slippage Stirs Smartphone Angst
Samsung's downbeat outlook is stirring up worries over the global...
eetimes.com
Imec, Panasonic Push Progress on ReRAM
The two companies jointly presented a paper at the recent...
eetimes.com
Patents: Exercises in Futility and Incomprehensibility?
Learning anything from patent documents has to be one of...
eetimes.com
The Best Way to Store Morse Code in C
In which we compare two approaches to store and manipulate...
eetimes.com
Test is not someone else's problem
You can reduce production time and cost if you create...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +