Archive for April 21, 2015

Phazzer The Best Air Taser For Self-Defense

April 21, 2015

Phazzer air stun guns are one of the most effective self defense weapons available within the US. Designed to rival the Taser electronic control device, they are capable of disabling an escaping perpetrator from a safe distance away.

The Phazzer is an electroshock weapon that uses electrical current delivered via darts which are shot through the air attached by wires. They are considered by many to be excellent non-lethal weapons for self defense and here’s why. Air stun guns will temporarily disable an attacker when high-energy, low amperage electricity from one of these devices passes through clothing and skin, and enters the body. Any effects caused are not permanent. Getting acquainted with and acquiring the proper self defense arsenal is the first step in demonstrating how much we value our own safety.

The air stun gun’s function is to stun the aggressor with electrical energy charges and the Phazzer falls under this category of arsenal. The devices emitters are fired from the mechanism like a conventional gun but are connected to wires that conduct electricity. An electrical current travels via two wires to the emitters which act like darts and attach themselves to the attackers skin or clothing. The air stun gun is makes ideal as an effective device for self protection because it has long range capability. The Phazzer allows you to be at a distance from the assailant and still work. You can disable an attacker from up to 25 feet away.

Phazzers are a popular choice for self defense since they cost a lot less than their closest competitor, the Taser electronic control device. In addition, no criminal background check is ever required to use the Phazzer, unlike the Taser which requires you to have a criminal background check and pay a fee for it.

Phazzer Electronics Inc. makes some exceptional air stun guns for self defense. Two worth noting are the Dragon and the Enforcer. Both the Phazzer Dragon and Phazzer Enforcer air stun gun are effective non-lethal weapons in protecting the users safety. They provide a safe alternative to the use of deadly force in the defense of personal safety instead of injuring the target. These air tasers have been tested for safety and will substantially reduce the likelihood of serious harm or death as compared to alternative methods of self defense. The Phazzer is one of the most effective alternatives to the use of more substantial force when it is unnecessary. Both devices have been field tested for accuracy and effectiveness, and have consistently subdued their target within 2 to 5 seconds upon contact. The Dragon can also be used as a traditional hand-held stun gun after the dart cartridge has been released from the device. In addition to the projectile electrodes which stun an attacker, the Enforcer offers pepper ball cartridges. The pepper ball cartridges shoot pepper balls which explode on the target and is the same as hitting them with pepper spray.

Phazzers are very effective less-than-lethal devices. Law enforcement, armed forces and individuals worldwide use stun devices for self protection. You will have to decide for yourself if a stun device is right for you. You may want to make that decision based on ease of use, what you know about the weapon and if you will be able to effectively use it to fend off an attack.

Military Electronics Distributor Hard to Find Electronic Components and Parts

April 18, 2015

Proactive Components, Inc. is a IS0 9001:2008 certified firm and leading electronic components distributor of military and commercial components that include IC’s, semiconductors, active and passive components, electromechanical parts, and hardware. We are committed to constant and continuous improvement of the quality processes in order to meet and exceed customer satisfaction. This is achieved with timely and accurate requirement responses, order accuracy, counterfeit awareness, on-time deliveries, and superior customer service.

IC’s: We are the leading distributor of ICs for military grade, space and medical ICs. Our experts are here to help you locate the Milspec or original ICs you are looking for. We are an experienced distributor of high-grade ICs.

Transistors: This is your place for aerospace transistors and aeroplane grade, military grade and medical quality transistors. ProActiveComponents supplies transistors to clients around the globe.

Diodes: ProActive is your source for leading semiconductors and diodes. Our team supplies military-grade and spacegrade diodes for aircraft, aerospace, military and commercial hardware.

Capacitors: Let us source your space and military quality capacitors. ProActive supplies capacitors from every manufacturer and can ship around the world. We specialize in passive electronics like capacitors.

Resistors: We specialize in aerospace resistors and aeroplane grade, military grade and medical quality resistors. ProActiveComponents supplies resistors to clients around the globe.

Mosfets: ProActive is the spot for hi-tech Mosfets and Mosfet components. Our team supplies military-grade and spacegrade Mosfets for aircraft, aerospace, military and commercial hardware.

SRAM: Do you need a specialized SRAM part distributor to find you the obsolete SRAM you’re looking for? ProActive is an ISO 9001:2008 certified distributor and we can find the obsolete SRAM you need.

DRAM: We source in military-grade DRAMs and aerospace / medical grade DRAM. We can find you the original or mil-spec DRAMs you are looking for – get a quote on your next DRAM purchase.

EPROM: ProActiveParts can find you the obsolete EPROM you’ve been looking for. We specialize in hard-to-find electronic components like EPROM and are ready to ship you the part(s) you need asap.

EEPROM: Do you need to find you the obsolete EEPROM? Look no further! Our team can get your obsolete electronics and parts like EEPROM and we are standing by.

Flash Memory: ProActiveParts.com is your place for aerospace Flash Memory and aeroplane grade, military grade and medical quality Flash memory.

Microcontrollers: When you need a professional to source your space-grade and military-spec Microcontrollers for both military, commercial and medical hardware and applications.

Microprocessors: We are a leading supplier / distributor of Microprocessors. We specialize in high-quality Microprocessors for all your needs, military, medical, commercial and more.

Relays: Do you need a specialized Relay part distributor to find you the obsolete relay you’re looking for? ProActive is an ISO 9001:2008 certified distributor and we can find the obsolete relay you need.

Switches: ProActiveParts.com is your place for aerospace switches and aeroplane grade, military grade and medical quality switches.

Connectors: We are the leading distributor of connectors for military grade, space and medical connectors. Our experts are available to help you locate the Mil-spec or original connector you are looking for.

Electronic Fans: Let us find you need that specialized computer or hardware fan you’re looking for – ProActive is an ISO 9001:2008 certified distributor of hi-tech electronic fans and we can find the hard-to-find fan you need.

Crystals and Oscillators: ProActiveParts.com is a leading supplier / distributor of Crystal Oscillators. We sell high-quality Crystal Oscillators for all your needs, military, medical, commercial and more.

Fuses: The team at ProActive are experts in locating hard to find or obsolete fuses. As an integral part of electronics across the world – fuses of all types are always in demand, especially obsolete ones.

CPUs: ProActive Components is your source for space-grade and military-spec CPUs for both military, commercial and medical applications / hardware.

The Useful Of The Electronics

April 17, 2015

Can People imagine that what our life would be like if the whole electronics are disabled? We cant hold outstanding efficiency without computers; plentiful computer-related technicians would say goodbye to their jobs. More depressingly, even at home, they would also have nothing to do: there is no television. a large number of people would lose the contact with others for they have been inured to using telephones. Cars and vessel would get lost, maybe forever, for GPS and navigation systems are disabled. The global economics would deteriorated for wholesale electronics is its necessary component. A world without electronics is unacceptable.

“Electronics” is one aggregative noun which contains many points. In my opinion, these things could be categorized into 2 facets. The 1st facet is the products that every person must have in the Information Age such as computer, television, phone, and calculator. In this age, computer is the linchpin of life and work as well as the assurance of efficiency. Television has deeply taken root into our life for a great many years and affected people from generation to generation. From telegraph to telephone, from telephone to cell phone, scientists keep committing themselves to improve communications tools, but electronic method is invariable forever. We cant live without calculator as well, unless you use abacus as well as Chinese. They have been one part of humans life, and made up of the significant elements.

The second aspect is the goods that improve the life standard such as entertainment products, health care electronics (for example: blood pressure detector, alcohol detector and etc.) and

Electronics Mini Final Year Projects

April 16, 2015

Pneumatic devices are awfully well known for their simplicity of operation, precision and efficiency. Hydraulic and other mechanical devices always lag behind the pneumatic devices when it comes to processes concerning lift mechanisms.

Pneumatic devices when joined with electronics can supply an array of new possibilities to explore. Easy and forceful electronics mini projects might be designed by working on a straightforward timed automation circuit like an astable multivibrator circuit to couple pneumatic device control and the overall feedback control. Such a project would give a broad view on how pneumatic jacks and lifts might be timed using electronics for better applications.

Electronics mini projects need not necessarily be orientated towards standard circuit building and problem-fixing. Electronics might be explored in a much diverse way these days. MATLAB is an effectual high level computing language that will help us in solving a number of complex issues. Many electronics mini projects on mobile networking could be done using simulations in MATLAB.

Create a sample network base and track the signals so that the shortest path might be turned up at using vector manipulations. This will give you a concept on what actually happens in a real time situation. Troubleshooting the simulations will help you in learning the way problems customarily pile up in mobile networking issues.

Bionics is an emergent field which is a combination of biology and electronics. Electronics is capable of representing many complex issues in simple techniques. The variety in the field of electronics makes it more perfect to perform a part in unison with biology. Biological systems basically function and stay level only through energy changes and energy transfers.

Many electronics mini projects may be designed based mostly on the factors that could relate biological energy stabilization, transfer and electronics, in a wider sense. For this task to be accomplished successfully, one should have a good understanding and knowledge on basic biology and the biochemical mechanisms underlying the phenomena.

Advances In Silicon Technology Enables Replacement Of Quartz-based Oscillators

April 10, 2015

Introduction

With a market size estimated at more than $650M and more than 1.4B crystal oscillators supplied annually, quartz crystal oscillators have long been the preferred choice for clock generation in consumer, computing, and communication applications. Quartz oscillators are available in a wide
range of frequencies, package sizes, and stabilities. In addition to providing excellent jitter performance, quartz oscillators are available from a broad range of suppliers.

Quartz Resonator Based Oscillators

Crystal oscillators require a unique quartz resonator for each frequency. The crystal oscillator assembly process requires the quartz to be cut, x-rayed, lapped, mounted, and sealed into the
final package . Fabrication of these resonators becomes increasingly difficult at frequencies over 100 MHz because the resonator must be manufactured to very tight tolerances. The complexity of the manufacturing process is subject to poor yield at multiple steps within the
process forcing material restarts and overall production delays.

In addition to lead times, reliability is a chief concern with quartz oscillators. Quartz oscillators are susceptible to contamination which can affect both the center frequency and the ability of the XO to start up reliably. If an oscillator fails in the end application, often the entire system fails because the oscillator provides critical timing for the electronics.

MEMS Resonator Based Oscillators

The industry has long been searching for a technology that enables the replacement of quartz oscillators with a solution that addresses lead time and reliability concerns while providing performance on par with quartz oscillators. Over the last several years, micro-electromechanical
system (MEMS)-based oscillators have emerged as a possible replacement technology for quartz oscillators. MEMS-based oscillators provide an alternative solution to quartz by replacing the
quartz oscillator with a CMOS-based mechanical resonator.

Si500 Silicon Oscillator

Silicon Labs Si500 silicon oscillator leverages a standard IC manufacturing flow. The silicon oscillator is fabricated using standard submicron CMOS technology and standard low-cost
plastic packaging that does not require a hermetic seal. The silicon oscillator is factoryprogrammed at test to a specific frequency, signal format, and supply voltage.

Si500 Technology Overview

The heart of the architecture is a low phase noise, frequency flexible LC oscillator. Using innovative mixed-signal analog circuitry, the oscillator is compensated for frequency variation due to operating temperature range, aging, initial frequency accuracy, supply voltage change, and output load
change. The silicon oscillator supports a wide frequency range, generating any output clock frequency from 0.9 to 200 MHz. Selection of the frequency, output type, supply voltage, and output enable (OE) is stored in non-volatile memory (NVM). At power-on, the Si500 performs a
self-calibration using these stored parameters and configures itself for operation.

Temperature Stability

Temperature stability refers to how much the oscillator frequency varies over the operating temperature range of the device. For the Si500 silicon oscillator, tight temperature stability is achieved through dynamic temperature compensation. The device has an on-board temperature
sensor that, upon detection of a temperature change, dynamically adjusts the frequency of oscillation of the LC oscillator to maintain a stable output frequency.

Aging

All oscillators experience drift in the frequency over long periods of time. The effect is called aging and is an important specification in the overall frequency stability budget. Aging behavior is dependent on several aging mechanisms including the design of the resonator, the assembly of the oscillator, the contamination level surrounding the resonator, the design of the electronics, and the operating temperature. To determine an upper bound on aging performance, it is
necessary to control as many of the mechanisms as possible and to verify conformance through extensive aging studies.

Reliability

Quartz oscillators require hermetic packaging for the crystal. Package leaks or internal contamination can lead to long term frequency aging, or if severe enough, can even prevent oscillation. Consequently, oscillator manufacturers minimize contamination by using costly, hermetically sealed ceramic or metal packaging and special processing. Done properly, reliable operation can be achieved, but package and assembly costs will be considerably higher than with non-quartz CMOS only devices. Being a mechanical device, MEMS resonators are susceptible to the same contamination issues and also require hermeticity.

Shock and Vibration

Shock and vibration can also limit the reliability of quartz-based oscillators. Quartz crystals are mounted above the oscillation electronics using epoxy or metal clips supported on one side only. Attaching the crystal on one side places the crystals center of gravity far away from
the support point allowing the crystal to swing like a diving board when exposed to vibration.

Jitter Performance

Period jitter is a key specification for oscillators since it impacts the setup/hold time, noise margin, or bit-error rate of systems that require alignment between clock and data. Period jitter describes how much any period may deviate from the ideal clock period and is used to determine the setup/hold time margin within a digital system. The amount of margin required depends greatly on the how many timing violations (i.e., bit-errors) a system can handle. In most designs, no timing
violations are allowed over the lifetime of the product, so the amount of margin is quite large. Period jitter is related to phase noise[2] and is often dominated by phase noise at far offset frequencies up to half of the clock frequency.

Programmable Output Buffer

Because the Si500 can generate frequencies across a large range (0.9 to 200 MHz), the output buffer design must provide easy connectivity for the many common receiver formats and voltages used in this range. The Si500 employs a programmable output buffer with support for both
differential and single-ended formats while easing the design effort by incorporating common external components.

Conclusion

With advances in mixed-signal CMOS technologies, silicon oscillators like the Si500 are now competitive with oscillators that use traditional quartz or MEMS resonators. By eliminating the need for these mechanical resonators, the Si500 offers significantly improved reliability when
shock, vibration, and oscillator start up are considered. In addition, the Si500s simplified manufacturing flow reduces cost and enables short predictable lead times when compared to traditional quartz based oscillators.