بهرام الكترونيك

US-based Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionise ...

International Rectifier has introduced the PowIRaudio family of integrated power modules for high performance home theatre systems and car audio amplifiers. The new devices integrate a PWM controlle...

Researchers have unveiled a computer chip that paves the way to a new generation of microchips that use a fraction of the power of today's microprocessors. The so-called inexact chip improves power a...

Analog Devices has introduced a 4-channel high-speed A/D converter to its data converter product portfolio. The AD9653 A/D converter is designed for medical imaging and communications applications w...

Celcite Management Solutions is to open a new Global Delivery Centre near New Delhi, India. The move comes with the appointment of Jeevan Sandhu as the Managing Director. "As Celcite expands its glo...

Telecoms software provider, OpenCloud, is to partner with Africa-based software developer, Altech ISIS. Altech ISIS will provide local development knowledge and operational support during the deploym...

The band rejection filter circuit is not wide filter that can denial the frequency up to 60dB by we used the TL071 single chip op-amp it is very low distortion and work good at output to maximum to 100kHz or the range 1Hz to 20kHz In the circuit we defined three resistors R1,R2,R3 are like [...]

This circuit provides for right half wave rectification of the input signal. The op-amp IC no-NE5535 is Dual High Slew Rate Op-Amp, it is used for main of this circuit. The input signal have two-phase supply are Fist, positive signals is the gain is 0; And second, negative signals is the gain is – 1. [...]

When you are connected to buffer a tester to outside tool, we should have an booster with enough bandwidth and power disposition ability. This circuit is a very simple for unity gain buffer; it is only two pairs of emitter followers. The base emitter voltages of Q1 and Q2 cancel out, and so do those [...]

This circuit is suitable for an indicator to audio signal lower than 3Vp-p. In the circuit, we use a very small parts with only two of the LED display and built-up resistor for current depression. Light-emitting diodes(LED) connected with reverse polarity provide a visual indication of zero-beat frequency. Each Led is on for only half [...]

General Purpose Power Supply by L146 or IC 723 This power supply is designed for general purpose use. Advantages of the circuit are first the voltage can be adjusted from 0V to greater and second it does not require a double sided secondary winding transformer. For high voltage outputs you can use L146 or alternatively [...]

In the circuit shown, Twin-T network connections with LM102 in form of High Q notch filter. Usually, the junction of R3 and C3 to ground, is bootstrapped to the output of the follower. Because it has a very low impedance,neither the depth nor the frequency of the notch change. However, Q increases in proportion to [...]

Detect and shutdown reverse polarity or overvoltage before damage...

A counter’s self-presetting feedback loop hunts for the center...

Use a switch to selectively connect a terminal, personal computer, or any other originating...

Use a sampled-data technique to lower a monitor circuit’s average power...

Come Along for the Ride on the Ultimate Electronics Road Trip! Join the adventure as road warrior and editor of EE Times’ EE Life, Brian Fuller, tours the USA in the fire engine red Drive for Innovation Chevrolet Volt in search of engineering innovation. Follow content, access a drive tracker and an interactive map highlighting the tour as well as participate in games and weekly contests. Join the adventure!

Beyond battery chemistry and electricpropulsion and control, the ChevyVolt enhanced-range...

Detect and shutdown reverse polarity or overvoltage before damage...

Production of one company's new automatic-test systems screeched to a halt when a simple...

Silicon Designs' model 2266 high-precision accelerometer come with a simple four-wire snap-in...

Come Along for the Ride on the Ultimate Electronics Road Trip! Join the adventure as road warrior and editor of EE Times’ EE Life, Brian Fuller, tours the USA in the fire engine red Drive for Innovation Chevrolet Volt in search of engineering innovation. Follow content, access a drive tracker and an interactive map highlighting the tour as well as participate in games and weekly contests. Join the adventure!

The MLX92221 and MLX92241 Hall Effect sensors from Melexis are designed for stringent automotive...

Supply voltage: Between 11 and 15V (MAX) CC Adjustments PWM between 1% to 98% typical 5A output current (with cooling) Led Dimmer using TL081 - [Link]

Researchers at the University of Basel in Switzerland say they have developed a new approach to producing environmentally sustainable photovoltaic devices. The research team developed a new method for producing dye substances and attaching them to the surface of titanium dioxide nanoparticles. With this they demonstrated that simple dye compounds based on zinc, a readily available metal, can be used. Dye-sensitized solar cells (DSCs) consist of titanium dioxide, a semiconductor material coated with a colored dye. The dye absorbs sunlight and injects electrons into the titanium dioxide, which ultimately results in a photovoltaic current. Conventional DSCs use ruthenium dyes, but...

www.cnx-software.com writes: A cheap white brand Android 4.0 USB/HDMI Stick based on AllWinner A10 has started to show up in Chinese websites. Initially, I thought it was like a low cost version of FXI Tech Cotton Candy (which will start shipping this month), but as you can see in the image below, the HDMI port is female so you’d still need a HDMI cable. The hole next to the USB port should be for the power supply, so this device is apparently not powered via USB (TBC). 74 USD AllWinner A10 Android 4.0 Mini PC - [Link]

Marcus Roskosch writes about his Iphone – Ipad application. Elektor Electronic Toolbox combines electronic reference material with calculation and conversion tools in one handy app. Whether a professional or hobbyist, the app gives users a collection of the most important electrical information right at their fingertips such as: Type listings (with color coding) for Resistors and capacitors including SMT types Databases for Transistors, FETs, Triacs, Thyristors, Diodes, ICs, TTL, CMOS, Atmel and PIC controllers Calculating circuit values for Resistor, Capacitor, Inductor, NE555, Filter circuits and much more Unit conversion for numerous types of Measurements (pressure, energy, distance, speed, weight, etc.) A database for common electrical...

Wired.com shows us how teeny, tiny transistors are born in a near-total vacuum.  [via] Nanotransistors just got a lot more nano. A new chip construction process cooked up by Applied Materials in Santa Clara creates transistors so small they can be measured in smatterings of atoms. The company can now coax a few dozen of the little guys to assemble themselves into a base layer that helps control the flow of electricity on computer chips. The biggest development is the manufacturing process: Applied Materials devised a way to keep several interconnected manufacturing machines in a near-total vacuum—at...

www.adafruit.com writes: I was digging around trying to find some information on an obscure LCD module, and came across this interesting table (compiled partially in Russian) that correlates a lot of older mobile phones with their specific LCDs, LCD controllers, dimensions, serial bus, etc.  If you’re looking for cheap LCDs of a specific physical size or resolution, this might be a good starting point since there may still be spare parts floating around out there.  If nothing else, it’s just an interesting read looking at how much time and effort went into this thing (presumably a repair shop...