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
What Will Make Wearable Technology Take Off?
Wearable technology will take off when people can wear it,...
Expansion of Information Technology Agreement Big Deal for Semiconductor Industry
The recent ITA deal is a huge shot in the...
OmniVision Shareholders Approve Seagull Takeover
The shareholders of CMOS image sensor vendor OmniVision Technologies Inc....
Indian Fab Project Hires Former GloFo Exec
Indian foundry fab will be located near Indore in Madhya...
NASA Preps Venus ICs
NASA is sending a mission to Venus, where the surface...
Will The World Coalesce Around USB Type C?
USB Type C is still too new for any market...
Agile Design for Hardware, Part III
In the final installment of a three-part series, two Berkeley...
EMI Antennas Come in Many Shapes & Sizes
EMI antennas are needed for compliance and precompliance emissions and...
The ACM/IEEE International Conference on Information Processing in Sensor Networks...
Silicon Valley's Longest-Serving CEO Beginning New Chapter
With the impending close of Microchip's $840 million acquisition of...
EEVblog #774 – Low Battery Discharge Testing Part 1
Dave shows how to do discharge testing on AAA and...
Perambulating & Texting -- Dazed & Confused
It seems that walking while texting is becoming endemic; so...
IBM Takes A Second Turn at PCM Drift
Another approach taken by IBM and Macronix to address phase...
The Next Big Thing Is The Continuum
What will come next for us? Internet of Everything, wearables,...
Making EDA Exciting Again
There are still plenty of exciting challenges out there for...
Turing Test -- Are You Talking to a Human or a Machine?
Imagine you are allowed to pose five questions to determine...
MediaTek Cautions 'Weak Demand' for Handsets
MediaTek has pared its expectations for 2015 as a result...
Patent Search Supports View 3D XPoint Based on Phase-Change
Is 3D XPoint non-volatile memory really just a version of...
Industrial Automation Companies Combine
Japan's Omron is acquiring US-based Delta Tau Data Systems....
Friday Quiz: Oscilloscopes
So, you use an oscilloscope every day? Well then, you...

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 +