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If so far you are still confused how the actual origin of the resonance between the capacitor and the inductor is in progress, then the simple circuit above will answer your confusion. By understanding a simple electrical circuit above hopefully we will be able to understand the working principle of a series of more complicated and complex that uses the relationship as a series inductor and capacitors transmitter and receiver. Note the picture above, when the switch SW1 is pressed and released back then obtained by the same signal as in the picture above signal. Initially when SW1 is connected to the voltage supply, the capacitor will make filling fast. Then when SW1 is released charge on the capacitor will be used by the inductor as the supply voltage. In accordance with the general nature of the inductor that the DC signal will be considered ordinary wire inductor such that current flowing quickly through the inductor and the charge on the capacitor decreases rapidly exhausted. Uniqu...

Basically the DAC circuit is made to meet the need for the level of influence in the development of digital electronic circuits electronics world. Since the discovery of Silicon and Germanium semiconductor material then quickly there was a revolution in terms of simplicity and accuracy of an electronic circuit. Besides, with the implementation of digital circuits will support at all in terms of data storage and mobility. Lots of data can now be operated with a computer is a data converted from analog signals. For example a voice signal or analog form of video can be played and stored using a computer after analog signals are converted into digital data. Advantages possessed by the digital data than analog signal is a certainty the nature of the data or logic. Digital data only can be divided into two kinds of logic high "1" and logic low "0". Logic 1 represents 5 volts and low logic voltage 0 volts represents. Examples of the advantages of digital signals over anal...

The planterbot is a plant monitoring robot. It uses capacitance for sensing moisture from the plant instead of using the usual soil probe, this means that wires don’t go into the plant. It also detects temperature and light using thermistors and Cds photocells and displays the temperature and light graphically on the front facing LCD. [ ]

The Chinese company Gionee, known mainly for its thinnest smartphone Elife S5.5 and Elife E5.1, is preparing another interesting device. The device, made in unusual for modern smartphones clamshell, was seen on the website of the Agency for certification of Chinese telecommunications equipment (TENAA). This model will be the world's first smartphone equipped with two screens with a resolution of 1080p. Diagonal inner and outer screens is 4 inches. Given the resolution of 1080 x 1920 pixels it gives quite a high density of 550 ppi. The device runs on Android 4.4 KitKat, built on a quad-core processor with a clock speed of 1.5 GHz, equipped with a 13-megapixel main and a 5-megapixel front-facing camera, 2 GB of RAM and 16 GB of internal memory and supports network LTE. The thickness of the model is 14.8 mm, and weight - 172 grams. While nothing is known about when to begin selling Gionee W900 . In any case, the smartphone will be released in China and it is difficult to say whether h...

This circuit shows how far integration can be taken: IC1, a Type HT82207 from Holtek does virtually everything. Only a (small) loudspeaker and the necessary selectors need to be added. The standard 18-pin Type HT82207 is an integrated sound generator, producing sounds typical of the Old West. The various sounds are selected by S1–S6 as listed below. In the quiescent state, the circuit draws a current not exceeding 1 µA. S1 – bugle S2 – neighing S3 – sound of hooves S4 – pistol shot S5 – crack of a rifle S6 – cannon fire

Victorinox has launched a memory stick design which is, says the company, the most secure of its kind available to the public. The Victorinox memory stick uses several layers of security including fingerprint identification and a thermal sensor. Any attempt to forcibly open it triggers a self-destruct mechanism that irrevocably  burns its CPU and memory chip. The data can only be accessed through recognition of your fingerprint or the password. In addition to these functions, the Victorinox Secure also has a bright LED light that will reliably show you the way in the dark. With this tool as well, it goes without saying that you will not have to do without the indispensable Swiss Army Knife functions, such as a blade, nail file with screwdriver end, scissors and key ring. A new version of the device, which will employ e-paper to give users a read-out of its contents, is already in the pipeline. Victorinox say they wanted to create not only a product for today’s modern lifestyle but ...

Errors and their Adjustments in 1Φ energy meter Energy meters should give correct readings over a period of several years under normal use conditions. Some of the common errors in energy meter and their remedial measures are discussed below. 1.        Phase Error: It is necessary that the energy meter should give correct reading on all power factors, which is only possible when the field setup by shunt magnet lags behind the applied voltage by 90 o . But the flux due to shunt magnet does not lag behind the applied voltage exactly by 90 o because of winding resistance and iron losses. Adjustment: The flux in the shunt magnet can be made to lag behind the supply voltage by exactly 90 o by adjusting the position of shading band (or shading ring or shading coil) placed round the lower part of the control limb of the shunt magnet. This adjustment is known as lag adjustment or power factor adjustment (or power factor compensator ). 2.     ...

Such is the popularity of DC-to-DC voltage converters (“switching regulators”)––due to their high efficiency across wide input- and output-voltage ranges––that chip makers have focused a lot of research dollars on squeezing the essential components of the devices into modules. These modules typically include pulse-width-modulation (PWM) controllers and switching elements in a single, compact package, easing the design work for the engineer. However, until recently, it has proven difficult to include the energy-storage device (the inductor) inside the package. This has dictated that the engineer must specify, source, and design-in the inductor as a peripheral component, adding complexity and consuming board space. Now, a new generation of high-frequency switching regulators has enabled the use of smaller inductors enabling the devices to be housed inside the component vendor’s package. [ ]

    The Nexus 6 would have a 5.9 inch screen with QHD resolution (2K), 13 megapixel camera with optical image stabilizer and a metal frame and the new version Android L. The Google phone, Nexus, will continue to grow after all Nexus 6 and come with a 5.9 inch screen, multiple rumors say. Although the photo is an image (render) created by Android Police, every detail which is present in this Nexus 6 has been based on rumors you've heard the blog and that have circulated on the Internet. According to AP, the official name of the new Google phone, manufactured by Motorola, Nexus 6 (Shamu) and would be called based on the new Moto X design, but in a larger size, black front speakers and a metal frame around cell. The back of the Nexus 6 include a 13 megapixel camera with optical image stabilization, dual flash, 3200mAh + battery, a front 2-megapixel camera and QHD (2K) screen. With these reports on the Nexus 6 hope this be a new cell showed both is size and its features and compon...

I decided to try some fancy stuff with the electrics. I’ve always enjoyed messing about with electronics, so was a lot more confident with this part than I had been with the woodworking. So here’s the rundown on a typical Strat: Three single-coil pickups One 5-position selector switch One volume control Two tone controls (note, these are not treble and bass, but rather a tone control for the neck/mid-position pickups and another for the bridge-position pickup). And here’s what I wanted to achieve with my Strat Two single coil pickups One humbucking pickup that would fit into the same space as a single-coil pickup Three toggle switches (one for each pickup, allowing for every possible combination of pickups [eight options instead of five]) One volume control One coil tap push-pull switch incorporated into volume control One tone control (for all pickups) One middle-pickup phase reversal push-pull switch incorporated into tone control One boost control One boost on/off push-pull switch i...

Multiple Pedals or Effects in the same box - switching.

If it is desire to automatically energized and de-energized an electrical equipment at specific time of day, Automatically Time Switch (ATS) is use. One particular example is the switching of the street lights “ON” and “OFF” at 6:30 A.M. Control Operation The ATS has a disk D (A clock) which rotates 1 revolution for every 24 hours. The rotor scaled 24 hours at the ream. See figure (A). Each hour has a slot every 15 minutes interval. To this slot a white pin W and orange pin 0 can be inserted and detached. Both the orange pin and the white pin can be inserted in the slot with an indication of certain time. The time in the slot where the orange pin is inserted is the time desire to energize a certain machine. The white pin is inserted in the slot with the tome desired to de energized the machine. For example, in figure (A), it is desire to energize the street lights at 6:00 PM. An orange pin 0 is inserted into the slot with 18:00, (military time) indication. If the street lights are to...

  Whereas it's traveled 11.6 billion miles to interstellar space, Voyager 1's software isn't as high-tech as you may believe. In detail, it has less than 40 KB of recollection. To put that in viewpoint, your 16 GB iPhone 5 has about 240,000 times the recollection of a Voyager spacecraft. NASA developed Voyager in the 1970s in a pre-computer era when scientists had to rely solely on pencil, paper, chalkboards and their own mathematical abilities. While that appears unimaginable in a time when we contain decades' worth of computational power in our pouches, Voyager 1 is one of NASA's most thriving missions, and project researcher Edward Stone states he wouldn't have changed a thing. "It's astonishing it's continued as long as it has," pebble notifies Mashable. "I don't know how we could have done things much better than they were finished. I mean things do wear out, and we've had to swap to some of our backup schemes, but luckily we ...

Introduction The LM3909 is an integrated circuit (IC) which will flash a light-emitting diode (LED). Using only two extra components and a battery, the circuit is cheap and has a very low current drain from a 1.5 V cell. The circuit can be used as a novelty flasher, an indicator for a dummy alarm bell box, or it could be attached to a torch so that it could be found easily in the dark! The simple circuit Led Flasher with the LM3909 IC Diagram Assembly The circuit can be built on a small piece of Veroboard (the piece shown in Figure 2 measures 15 holes by 10 strips). Using such a board, follow these instructions. 1. Depending on how far away you want the LED from the circuit board, solder a length of insulated wire to each lead of the LED. Use different colours of insulation – say, red and black, connecting the red lead to the anode (a) lead (the longer one) of the LED, and the black one to the cathode (k). Figure 2 shows these leads. 2. Cut the copper tracks as shown i...

Power amplifiers that we sometimes raises a raft of small drone as groundingless than perfect.The following are some ways to cope with the hum of the power amplifier:  1. Keep sensitive circuits of the transformer, casing dimensions are not too small.One blog even suggested to use two-bok, bok special one for the transformer. For the toroid transformer or amplifier with a large transformer, should only contain a series of power amps, with no tone control.  2. Change the position of the transformer, side by side into the lower side (the transformer is high) withfacing a series of sensitive posts  3. Use a spacer on each PCB board as high as half the height of the transformer, eg as high as 2.5 cm or more so that the PCB board parallel to the core / center of the transformer, here the effect of the weakest fields.  4. We recommend using a stereo module instead of two mono modulesThis avoids wiring errors. If forced to, try to sizecable between the right and left m...

This circuit is a cheap way is a simple DC voltage doubler, which requires a few components and will generate a voltage 10Vdc from a 5Vdc power supply that can be output from the PC USB. The oscillator should be constructed from a non-functional door IC 74HC132 then requires more than two components are R1 and C3. The most important parameters of the voltage doubler circuit are given in the table schema. Note   That due to the tolerances of the data IC may have a few differences. DC Voltage Doubler using the 74HC132 Circuit Diagram

This DC-to-AC inverter schematic produces an AC output at line frequency and voltage. The 555 is configured as a low-frequency oscillator, tunable over the frequency range of 50 to 60 Hz by Frequency potentiometer R4.  The 555 DC-to-AC Inverter Schematic The 555 feeds its output (amplified by Q1 and Q2) to the input of transformer T1, a reverse-connected filament transformer with the necessary step-up turns ratio. Capacitor C4 and coil L1 filter the input to T1, assuring that it is effectively a sine wave. Adjust the value of T1 to your voltage. Error fix: Pin 7 and 2 were reversed. Original pinout was correct. Parts List: R1 = 10K R2 = 100K R3 = 100 ohm R4 = 50K potmeter, Linear C1,C2 = 0.1uF  C3 = 0.01uF C4 = 2700uF Q1 = TIP41A, NPN, or equivalent transistor Q2 = TIP42A, PNP, or equivalent transistor  L1 = 1uH T1 = Filament transformer, your choice The output (in watts) is up to you by selecting different components. Input voltage is anywhere from +5V to +15Volt DC, ad...

The auto sound systems of today are much more involved and complicated than the simple car stereo and speakers of years long past. Today's sound systems have all kinds of bells and whistles that many us could have only imagined during our younger years. In fact, it is quite possible that many of us did imagine these and those imaginings are how they came to be. One thing you need to do before you even begin to put the auto sound system of your dreams together is learn what kinds of components exist, how they work together, and which ones you really think you need as part of your auto sound system and which components you honestly feel you can live without. Life is about compromise and most of us will readily admit that we are quite unlikely to ever use all the bells, whistles, and upgrades that are made available to us within our lifetimes. I don't know about you, but my cell phone has features I've never even gotten around to learning how to use. I know I can use them and...

RSLinx Tutorial | Configuring the Ethernet Driver The Ethernet driver is used to make a connection to Ethernet Devices, such as an Ethernet PLC-5, or a ControlLogix system .   The following steps will walk you through a sample configuration of the Ethernet driver in RSLinx .   1)      Open RSLinx communication server 2)      Click 'Communication' on the menu bar, and then choose 'Configure Drivers'. 3)        From the Available driver types pull down menu, choose 'Ethernet Drives', then press the 'Add New' button. 4)      For this example, the name can be left at default.   Press OK. 5)        Populate the list of hostnames.   If you do not have a way to resolve host names, you can enter the IP address of the devices you wish to connect to (as shown below in the example).   The IP address for each device can usually be obtained from the network ad...