| 1) Brief History of Logitech RF Technology |
| The first generation of cordless mice, pioneered by Logitech in 1981, used infrared technology (IR) to communicate with receivers connected to PCs.
While an infrared mouse provided a relative measure of freedom, it required a direct line of sight to an IR receiver. It also failed to approach the transmission
rates of a corded mouse. Looking for ways to improve cordless performance, Logitech led the move from corded to cordless technology in 1984 with the
revolutionary Infrared cordless desktop. |
| Category: Electronics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 2) Switching Battery Charger with L296 - del20031 |
| L296 is a switch mode power controller here. In this NTE327 or 2N5038 is used to boost the current output. This transistor is both high current and fast switching. U1A, LM358 measures the load current by reading the voltage across shunt R6 and compared to a current limit setting at R14 using U1B to give a load current control. R7-R8 give a voltage feedback for voltage limit. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 3) LEDs for Beginners |
| This instructable shows how to wire up one or more LEDs in a in a basic and clear way. Never done any work before with LEDs and don't know how to use them? Its ok, neither have I.
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| Category: Semiconductors -> Applications |
| Posting Date: May 09, 2008 |
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| 4) Light Emitting Diodes (LEDs) |
| LEDs must be connected the correct way round, the diagram may be labelled a or + for anode and k or - for cathode (yes, it really is k, not c, for cathode!). The cathode is the short lead and there may be a slight flat on the body of round LEDs. If you can see inside the LED the cathode is the larger electrode (but this is not an official identification method).
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| Category: Semiconductors -> Applications |
| Posting Date: May 09, 2008 |
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| 5) ADVANCED ELECTRIC GENERATOR & CONTROL FOR HIGH SPEED MICRO/MINI TURBINE BASED POWER SYSTEMS |
| High-speed micro-turbines and mini-turbines play a significant role in the Distributed Power Systems that provide dependable electric power close to the user. Several high-speed turbo-generators manufactured by various corporations are now available in the 30 kW to 90 kW range. These systems operate at speeds from 50000 RPM to 120000 RPM. The generator is directly coupled to the turbine shaft. This obviates the need for a gearbox, helps reduce the size of the generator, and lowers the cost of the overall system. The output power is electronically processed and conditioned to provide constant voltage dc or multi-phase ac power at constant frequency.
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| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 6) Induction generator |
| An induction generator is a type of electrical generator that is mechanically and electrically similar to a polyphase induction motor. Induction generators produce electrical power when their shaft is rotated faster than the synchronous frequency of the equivalent induction motor. Induction generators are often used in wind turbines and some micro hydro installations due to their ability to produce useful power at varying rotor speeds. Induction generators are mechanically and electrically simpler than other generator types. They are also more rugged, requiring no brushes or commutators. |
| Category: Electronics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 7) Ultracapacitors |
| Like batteries, ultracapacitors are energy storage devices. They use electrolytes and configure various-sized cells into modules to meet the power, energy, and voltage requirements for a wide range of applications. But batteries store charges chemically, whereas ultracapacitors store them electrostatically. Currently, ultracapacitors are more expensive (per energy unit) than batteries. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 8) Supercapacitors |
| Supercapacitors, also known as ultracapacitors or electrochemical double layer capacitors (EDLC), are electrochemical capacitors that have an unusually high energy density when compared to common capacitors, typically on the order of thousands of times greater than a high-capacity electrolytic capacitor. For instance, a typical D-cell sized electrolytic capacitor will have a storage capacity measured in microfarads, while the same size supercapacitor would store several farads, an improvement of about 10,000 times. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 9) What are Laser Diodes? |
| Laser diodes continue to find new product applications as the lasing wavelength is pushed lower into the visible spectrum. The latest generation of Visible Laser Diodes (VLD's) operate at or near 635nm; this wavelength being equivalent to a helium neon gas laser, is highly visible to the human eye. VLD's in the range from 635nm to 685nm are replacing the traditional HeNe laser in many commercial products for good reasons: lower cost, compact size, and superior long-term reliability. Another intrinsic benefit, laser diodes are generally better suited for battery operated devices and other low voltage applications. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 10) Electronic Circuits |
| DiscoverCircuits.com, has 26,000+ electronic circuits or schematics carefully
cross-referenced into 500+ categories. As a vital resource for engineers,
hobbyists, inventors & consultants, the site's collection of information
will help you find quick solutions to electronic design problems. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 11) Learn more about the Oscillators |
| OSCILLATORS
LEARNING OBJECTIVES
Upon completion of this chapter you will be able to:
* List the two broad classifications of oscillators (wave generators).
* Identify the three frequency-determining devices for sine-wave oscillators.
* Describe the differences between series-fed and shunt-fed oscillators.
* Explain how the crystal is equivalent to the series and parallel LC circuit.
* Identify the Armstrong oscillator.
* Identify the Hartley oscillator.
* Identify the Colpitts oscillator. |
| Category: Electrionics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 12) Are you familier with the term electronic oscillator? |
| An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave. A low-frequency oscillator (LFO) is an electronic oscillator that generates an AC waveform between 0.1 Hz and 10 Hz. This term is typically used in the field of audio synthesizers, to distinguish it from an audio frequency oscillator. |
| Category: Electronics manufacturing -> Applications |
| Posting Date: May 09, 2008 |
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| 13) “How to Design RF Circuits” - OSCILLATORS |
| Oscillators can generally be categorised as either amplifiers with positive feedback satisfying the well-known Barkhausen Criteria (Ref. 1), or as negative resistance circuits (Ref. 2). Both concepts are illustrated in Figure 1. At RF and Microwave frequencies the negative resistance design technique is generally
favoured. |
| Category: Electronics projects -> Applications |
| Posting Date: May 09, 2008 |
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| 14) Advanced PIC Microcontroller Projects in C |
| Different types of microcontrollers projects can be easily seen here. |
| Category: microcontrollers -> electronic projects |
| Posting Date: May 09, 2008 |
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| 15) World of Microprocessors and Microcontrollers |
| Both i.e. the microprocessors as well as microcontrollers are considered as the matchless example of modern engineering. |
| Category: Electrionics manufacturing -> Application |
| Posting Date: May 09, 2008 |
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