Quantcast A Practical Half-Wave Rectifier

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
3-4 Figure 3-4.—Simple diode rectifier. During the negative alternation of plate voltage (dotted polarity signs), the plate is driven negative and the tube cannot conduct. When conditions prevent the tube from conducting, the tube is said to be in CUTOFF. This is indicated by the dotted waveform. The tube will be in cutoff and no current will flow for the entire negative alternation. For each 360-degree cycle of input voltage, the tube conducts for 180 degrees and is in cutoff for 180 degrees. The circuit current therefore has the appearance of a series of positive pulses, as shown by the shaded areas. Notice that although the current is in the form of pulses, the current always flows through the circuit in THE SAME DIRECTION. Current that flows in pulses in the same direction is called PULSATING DC. The diode has thus RECTIFIED the input voltage. Although the principle of rectification applies to all rectifier circuits, some rectifiers are more efficient than others. For this reason, we will explain the three rectifier circuits most commonly used in electronics today-the half-wave, full-wave, and bridge. A Practical Half-Wave Rectifier Figure 3-5 is a diagram of a complete half-wave rectifier circuit. For the diode to be used as a rectifier, it must be connected in series with a load device (RL for this circuit), through which the direct current flows. Because Navy electronic equipment requires various input voltages, it is necessary to have a rectified voltage that is greater (or smaller in some cases) than the source voltage. The rectifier plate circuit is supplied power from a step-up (or step-down) transformer. Notice that the transformer has the two secondary windings mentioned earlier. The lower winding supplies high voltage to the plate and cathode of the diode, and the upper winding supplies a low ac voltage to the filaments of the diode. Notice also that the cathode of the diode is connected to the secondary winding of the transformer through the load resistor (RL). Any current flowing through the tube also flows through the load resistor, causing a voltage to be developed across it. The magnitude of the voltage developed across the load resistor is directly proportional to the amount of current flowing through it (Ohm's law: E = IR).


Electrical News
Introducing FPGA-Based Acceleration for High-Frequency Trading
Handling market data is of highest merit and demands the...
eetimes.com
GM's Powermat Deal Falls Short
General Motors recently announced that it will include multimode wireless...
eetimes.com
Repurposing an FM Radio Chip for an RC Submarine Receiver Project
Adam is currently working on a 75MHz receiver for his...
eetimes.com
IoT Spec Taps Internet Protocol
The IPSO Alliance will release a reference architecture for an...
eetimes.com
Micron Makes Monolithic 8GB DDR3
Using a 25 nm manufacturing process, Micron has created a...
eetimes.com
Memory System Design Methods
Are you working with DDR4? Interested in NVDIMMs? Designing at...
eetimes.com
Makimoto's Wave Revisited for Multicore SoC Design
So predictable was the cycle of standardization and customization in...
eetimes.com
Mobile Benchmarks Need Work
The industry needs to put more effort into building better...
eetimes.com
EEVblog #645 – TRS-80 Model I Retro Computer Teardown
Dave looks inside the most popular microcomputer of the 1970′s,...
eevblog.com
Wearables Sing in Smart Clothes
The future of mainstream wearable technology may be driven by...
eetimes.com
ST Opens MEMS Microphone Test Laboratory
STMicroelectronics NV has set up an anechoic chamber in Taipei,...
eetimes.com
Power Tip 73: Synchronizing Makes for Well-Behaved Power Supplies
Synchronizing your power system offers a number of benefits, including...
eetimes.com
7 Insurance Issues With Your Self-Driving Car
People talk about the significant reduction in automotive insurance rates...
eetimes.com
Microsemi Bolsters FPGA Stance With Mingoa Acquisition
The Mingoa deal demonstrates Microsemi's push to gain market share...
eetimes.com
FAA Rules on Drones vs. Model Aircraft Contested
Proposed FAA dividing line between model aircraft and drones is...
eetimes.com
Think Different, Innovate by Reuse
It's time we slow down the fevered pace of new...
eetimes.com
Space Business Rising, Experts Say
The emerging commercial space sector is making progress but still...
eetimes.com
Connecting Islands of Industrial IoT
The Industrial Internet of Things often starts with a wealth...
eetimes.com
Graphene / Lithium Ion Capacitor Kickstarter BS
I’ve had a lot of people ask me to comment...
eevblog.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 +