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This is a very simple circuit of a bio-stimulator Muscular, which has indications for the treatment of cellulite. He sends little shocks through two electrodes, and should take great care when using the stimulator. The muscle stimulator circuit is based on a 555 timer IC. The transformer must be 220 volts to 12 100 to 150 mA and the circuit is connected in reverse. Muscular Bio-Stimulator for Treatment of Cellulite Circuit Diagram The IC 555 to generate pulses at 80 Hz and 150usec by the output voltage of the muscle stimulator device is about 60 volts to 150 volts, but the output current is very small and there is no danger of electric shock. The potentiometer P1 bio-stimulator sets the amplitude of the output pulses' and must be operated by the "patient", starting with the knob fully counterclockwise, then rotating it slowly clockwise until the LED begins to light up. The functional principles of the bio-stimulator is the same commercial bio-stimulator. Parts List: Linea...

Hi everyone, Here I give the PCB for my design: Top and bottom: Bottom Copper: Top Silk: The PCBs were then modified by a professional. I hope to upload those soon as well. These are the ones I designed myself. As I am not a professional at PCB designing, the boards became slightly large. Tahmid.

Simpleclock is an easy to assemble attractive 4-digit 7-segment LED display clock with temperature and alarm function. It is available in three display colors: Red, Blue and White. It comes as a kit of through-the-hole parts and can be soldered by any person with basic soldering experience. An attractive acrylic stand is included. [ ]

Normally cell batteries have a shelf life of 2 to 5 years under normal use . After that time we have to replace them . Nowadays there replacement batteries which are cheap, but these batteries last for much less cost only months. An easy solution is to use batteries in a circuit that requires less current , we can use them for lighting LEDs .  How to Reuse Old Cell Battery for LED lighting 

Radio Control for toy car Play toy cars controlled by radio signals is an interesting game. The much-loved toy cars children, plus a simple circuit would be ideal for toy cars. This series of families use traditional digital CMOS IC which requires a very small electric current, so it does not impose on the performance of the original toy cars. In this system, radio signals emitted not continuously but only generated when the controller sends a command left / right or forward / backward, and even then only a radio frequency of an intermittent, so it is sending pulses of radio wave frequency. Number of pulses sent represents a command is sent, the command GO is represented by 8 pulses, represented by 16 pulses LEFT, RIGHT DOWN 32 pulses and 64 pulses. Command sent to a combination of two orders once gus, which is a combination of command forward / backward and right / left, for example, could be sent forward command and left once gus, in this case the number of pulses sent is 24, which i...

Apple is allegedly sending out invites to the media for a special launch event next Wednesday, leading to the inevitable conclusion that it will be revealing the awaited iPad Mini. It has long been rumoured that the consumer electronics giant will be releasing a miniature version of itsnew iPadthis year, in response to a string of new and upcoming launches, including the Barnes and Noble tablet and Amazon Kindle Fire 2, which is expected to come equipped with a 8.9-inch screen, or the paradigm-changing Google / Asus Nexus 7. It was originally believed that Apple would launch the slate alongside its sixth-generation smartphone last month, but the device failed to make an appearance. Then again, it was also reported that the iPad Mini would launch some weeks after the iPhone 5, hence why the rumours have kicked off again. Tech site the Register reports a November 2 release date, although some critics remain sceptical as Apples late CEO Steve Jobs once famously dissed smaller tablets, cla...

This electronic circuit provides a delayed visual indication when a door bell switch is pressed. In addition, a DPDT switch can be moved from within the house which will light a lamp in the door bell switch. The lamp can illuminate the words "Please Wait" for anyone with walking difficulties. Simple Doorbell for the Deaf Circuit Diagram: Notes The circuit uses standard 2 wire doorbell cable or loudspeaker wire. In parallel with the doorbell switch, S1, is a 1N4001 diode and a 12 volt 60mA bulb. The bulb is optional, it may be useful for anyone who is slow to answer the door, all you need to do is flick a switch inside the house, and the bulb will illuminate a label saying Please Wait inside the doorbell switch or close to it. The double pole double throw switch sends the doorbell supply to the lamp, the 22 ohm resistor is there to reduce current flow, should the doorbell switch, S1 be pressed while the lamp is on. The resistor needs to be rated 10 watts, the 0.5 Amp fuse prot...

Taiwan Semi (TSM) May be Sole Manufacturer of Apple's (AAPL) A8 Chips for iPhone 6. Taiwan Semi (NYSE: TSM) is up in early trading Wednesday following reports that the company might have scored a big chip deal. Taiwam's Commercial Times reported that Taiwan Semi was tapped to supply the A8 chip in Apple's upcoming iPhone 6. The news is positive for Taiwan Semi and also hints that Apple is further distancing itself from rival Samsung. Production on the chips, which use a 20-nanometer process and have a 64-bit processor core, was said to begin in February. Taiwan Semi was also said to get most of the manufacturing orders for logic and power management integrated chips (ICs). Jefferies said earlier Wednesday that the iPhone 6 might debut in late summer and the Commercial Times is also looking for a Q314 launch. Finally, the Commercial Times thinks revenue for Q214 will rise 20 to 25 percent, better than previous market forecasts calling for a 15 to 20 percent gain. Taiwan Semi...

Finding the best amplifier for your auto sound system can be a lot easier if you take the time ahead of time to learn what you need and what will work best with the sound system you've selected for your car, truck, or SUV. It helps to understand what an amplifier does in order to purchase the one that will best suit your needs. An amplifier takes a small sound, adds a little boost of its own, and then turns it into a big sound. The more power your amplifier has, the better quality of sound it will provide. An underpowered amplifier will have a thin, tinny sound that is rather unattractive in an auto sound system, or any other sound system for that matter. You should also take care to remember that the power rating of an amplifier is the maximum power it is capable of expending not the amount that it will regularly use. The RMS rating of an amplifier is a good indication of its power output. One thing that is important to remember is that you should never buy an amplifier based on t...

Extension for LiPo Charger Project Image The ‘Simple LiPo Charger’ published in Elektor Electronics April 2005 is a small and handy circuit that allows you to quickly charge two or three LiPo cells. Especially in the model construction world are LiPo batteries used a lot these days, particularly model aeroplanes. It is usual to use a series connection of three cells with these models. Since working with these model aeroplanes usually happens in the field, it would be nice if the batteries could be charged from a car battery. We therefore designed a voltage converter for the LiPo charger concerned, which makes it possible to charge three cells in series. The voltage per cell increases while charging to a value of about 4.2 V, which gives a total voltage of 12.6 V. The converter, therefore, raises the 12-V voltage from the car battery to 16.5 V, from which the LiPo charger can be powered. Extension for LiPo Charger Circuit Diagram A step-up controller type MAX1771 in combination w...

Almost every robot needs to power a motor of some sort or another. Problem is that motors take quite a lot of power, compared to what most microcontrollers operate with. To solve this problem, robots use what is called a motor controller, which usually amounts to some form of electronic switch that can turn on a very high voltage, using a very low one. That’s what we’ll be making today! [ ]