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Usb series player is an electronic device or electronic circuit that functions as an MP3 player that is stored on a storage device such as USB flash. In this usb circuit using an IC as a modifier of digital voice data into analog so that it can be applied to a headphone, or again through the power amlplifier strengthened so that it can be heard through the speakers. IC used in this circuit using IC PCM2902 as a modifier of a digital data into analog data storage. Below is a schematic diagram of a USB player. Schematic usb player

Priject of Receiver and Transmitte r Low Cost Data Circuit Diagram. Here are two simple circuits that can be used for transmission and reception of data via RF to UHF frequency (433MHZ). Two circuits are super simple, no special components and has a good performance, but short range. It is set to the frequency of 433MHZ, but nothing prevents that with some modifications it works on other frequencies.  Receiver and Transmitter Low Cost Data Circuit Diagram 1 The range is small, ideal for data transmissions within an environment like office, garage, laboratory, workshop or room. This system of data communications short-range 434MHz can be used in projects of alarms, electronic gates, trigger devices from a distance, Arduino, etc. .. X1 is working on a crystal harmonic (433.92Mhz) and L1 receiver comprises 1.5 turns of wire must be tested diameter and thickness to reach the perfect reception of the transmitter.  Receiver and Transmitter Low Cost Data Circuit Diagram 2 You can mou...

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...

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...

  A "servo system" is a generic term used for an automatic control system. In other words a mechanism which adjusts itself during continued operation through feedback.   Servo control is a closed loop control system for electric motors. The servo system uses a sensor to sense motor position/speed. Servo control has a feedback circuit which changes the drive power going to motor according the control input signals and the feedback signals from sensors Three basic types of servo motors are used in modern servo systems: ac servo motors, based on induction motor designs; dc servo motors, based on dc motor designs; and ac brush less servo motors, based on synchronous motor designs. AC servomotors are typically permanent magnet synchronous motors that often have low torque-to-inertia ratios for high acceleration ratings. AC servomotors use integral encoders, integral resolvers, and integral tachometers for feedback signals.   Integral encoders contain attached encoders for angu...

Faithful amplification       The process of raising the strength of a weak signal without any change in its general shape is known as a faithful amplification the key factor for achieving the faithful amplification is that the base emitter junction of transistor remains forward biased and collector junction reverse biased. To ensure this, the following conditions must be specified. 1.        Proper Zero Signal Collector Current: The value of zero signal collector current should be at least equal to the maximum collector current due to signal alone. 2.        Proper Minimum Base-emitter Voltage: In order to achieve faithful amplification, the base emitter voltage V BE should be fall below 0.5 V for germanium transistor and 0.7 V for silicon transisto 3.        Proper Minimum Collector Emitter Voltage: For faithful amplification, the collector emitter voltage V CE should not fall below 0.5 V f...

Implementation of Cust omised SCADA for Cartoner   Packaging machine for Cost Effective Solution Abstract –   In Factory Automation   engineers are looking for the use of Visual Basic for the implementation of SCADA applications for several reasons.    Most of the SCADA applications require a very less number of user input parameters and data logging, monitoring and trending functionalities to be visualised by the user.    In Industrial environment, there are times when traditional SCADA based solutions provide most of the functionality but at a much higher cost than budgets allow for small OEM customers. By utilizing Visual Basic's integrated event based user interface design and database connectivity    functionality like SQL and adding off-the-shelf plug-in’s like ActiveX controls or DLL    or MSCOMM components to produce frontend graphics, trending, communication, and alarming. Developers, OEMs, integrators, and users can create...