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
Holiday Movies to Geek Out About
EE Times wants to ensure domestic bliss with a handy...
eetimes.com
Road to Auto Market Paved With Fault-Tolerant SoCs
Data protection and redundancy features implemented across entire SoC designs...
eetimes.com
Boston-Area Engineers to Share Expertise at ESC Boston 2015
In an exciting new session format at ESC Boston 2015,...
eetimes.com
Memory Design Trends in 2014
Memory transitions, increased-density drive design trends: Customers are looking for...
eetimes.com
True 3-D Chips Harness Nanotubes
Stanford University has learned how to stack any number of...
eetimes.com
Top 15 Analog, MEMS & Sensors News From 2014
From faulty MEMS mics to NXP's labor disputes, here are...
eetimes.com
Space Weather Satellite Set for Launch
NOAA's Deep Space Climate Observatory will serve as an early...
eetimes.com
Hackers Go Off-Grid for Power
Hackathon produces designs that could be assembled by villagers with...
eetimes.com
Ten Hot & Cool NASA Innovations
Partnering with industry, NASA has developed new technologies that are...
eetimes.com
The Circle – The Future's Imperfect in the Present Tense
Dystopian novel satirizes mega-Google companies and the modern techie ethos....
eetimes.com
Friday Quiz: S-Parameters
S-Parameters are no longer just for microwave engineers. High-speed digital...
eetimes.com
EEVblog #694 – Mailbag
Mailbag that’s not on a Monday, because Dave has been...
eevblog.com
So Much To Do, So Little Time
2015 will likely be the year of widespread awareness and...
eetimes.com
What Does It Take to Truly Leapfrog With Technology?
In January 2015, Lindsay Craig will be teaching technology workshops...
eetimes.com
Recommended Reads From the Engineer's Bookshelf
Are you wondering what to buy your family and friends...
eetimes.com
Successful With Phones & Drones, Parrot Ponders Farming
Parrot is a 20-year-old startup that has the passion of...
eetimes.com
Power Week: Popular Gaming Consoles' Energy Use Compared
Just in time for the holidays, engineers at the Electric...
eetimes.com
Make This Engineering Museum a Reality
Help turn the first house to have a telephone into...
eetimes.com
Make This Engineering Museum a Reality
Help turn the first house to have a telephone into...
eetimes.com
Industrial IoT Framework Near
The Industrial Internet Consortium plans to finish a reference architecture...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

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

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