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Off-Grid Kits For our customers wanting to install a solar power system in remote areas, we offer our specially designed solar off-grid kits. These off-grid systems are designed for an easy self-installation in rural areas. click on image to enlarge Solar Off-Grid Kits are pre-designed and packaged solar systems. These make the planning and installation of solar systems very easy - just choose the right Solar Off-Grid Kits for your specific energy needs and we provide you with all pre-assembled components for the actual installation and operation. Our Solar Off-Grid Kits are pre-engineered solutions for all standard needs. We can also offer tailored off-grid systems based on your special needs. Our strong partners from around the world enable us to offer you the best possible solar energy solutions . We design and install customized off-grid solar systems for a wide range of customer groups ranging from telecommunication companies, government projects, to hotels and resorts. Our standa...

               This project aims to design  a  Live  traffic  system. This  project  consists  of   GSM    module , LED   display ,   LPC   2138, and   ZIG-BEE module. This   system   is   mainly applicable   for   traffic   maintaining. A    speed   governor    will be   there   in vehicle   which   is   used   to reduce   the   speed of vehicle.   A speed   limit   board   will be   placed   on the   certain area   and this system consists of GSM module, LED display and microcontroller board. Traffic police could control the speed limit showing the LED display via internet. And this   speed range will be send to all vehicles through zigbee module. With   the   help   of motor   control   we   can reduce  ...

 "Simple 2.1 Surround Speaker System " . Here I have used  three TDA 2030 IC for making signal amplification . Here you need a sub filter extra ( Sub filter circuit diagram link showing below ) . This project  mostly used in computer  . Part list and applications are showing below. Part List Component No: Value Usage All C1 100MF  Grounding  All C2 100nF Grounding All C3 100nF Grounding All C4 100MF Grounding All C5 100MF Feedback All C6 100MF Audio Coupling  All C7 220nF Noise Grounding  All R1 1K All R2 10K ( Not 1K ) All R3 22K All R4 22K (Not 1K ) All RV1 100K Volume Controlling  All D1 To D2 IN4007 Potential Breaking U1 To U6 TDA2030 Amplification Applications * 2.1 Surround Amplifier * 2.1 Home Theater

Audio crossovers are a class of electronic filter used in audio applications. The circuit above is a schematic of 2-way Cross-over to your sound system, the crossover is a device used to filter and divide the audio frequency between the bass, midrange and treble. It helps in sound quality, eliminating the distortion that occurs when there is a passage of undue frequencies for a particular speaker. Filters 2-way Cross-over to your sound system Circuit Diagram  

ICs Used:  STK412-150C – IS81LV6416-10TLT[S-RAM] – TMP92CD28AFG[USB controller] – M30624MGP-B33FPU0(US) or M30624MGP-B34FPU0(Except US)[System control] – M61537FP-RF0G(Rec-Playback AMP) – BH2210FV-E2  Click on the pictures to zoom in AUDIO POWER SPECIFICATION (US model only) POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 6-ohm loads, both channels driven, from 120 Hz – 10 kHz; rates 160 watts per channel minimum RMS power, with no more than 10 % total harmonic distortion from 250 milliwatts to rated output. Amplifier section The following are measured at US model: AC 120 V, 60 Hz Other models: AC 120, 220, 240 V, 50/60 Hz Front/Surround speaker Power Output (rated): 160 W + 160 W (at 6 Ω, 1 kHz, 1% THD) RMS output power (reference): 250 W + 250 W (per channel at 6 Ω, 1 kHz, 10% THD) USB board schematic Transformer board schematic Main board schematic Power amplifier board schematic

This circuit optimises the operation of a solar hot water system. When the water in the solar collector is hotter than the storage tank, the pump runs. The circuit comprises two LM335Z temperature sensors, a comparator and Mosfet. Sensor 1 connects to the solar collector panel while Sensor 2 connects to the hot water panel. Each sensor includes a trimpot to allow adjustment of the output level. In practice, VR1 and VR2 are adjusted so that both Sensor 1 and Sensor 2 have the same output voltage when they are at the same temperature. The Sensor outputs are monitored using comparator IC1. When Sensor 1 produces a higher voltage than Sensor 2, which means that sensor 1 is at a higher temperature, pin 1 of IC1 goes high and drives the gate of Mosfet Q1. This in turn drives the pump motor. IC1 includes hysteresis so that the output does not oscillate when both sensors are producing a similar voltage. Hysteresis comprises the 1MO feedback resistor between output pin 1 and non-inverting input...

distributed database management system tutorial – Contain all the tutorial about the basic of computer to the advance level like Database Management System is a collection of facts and figures in which we inserts, delete and update data in the system.. Component of Distributed DBMS.Slides for Database Management Systems, Third Edition. Note These Chapter 22 Parallel Database Systems. Distributed Database Systems. Chapter 23  (pdf) (bibtex) Consistency Tradeoffs in Modern Distributed Database System Design CAP is Only Part of the Story (pdf) (bibtex) SW-Store A Vertically Partitioned DBMS for Semantic Web Data Management Tutorials and Panels. Column  distributed database management system tutorial. Therefore, the tutorial aims both at database management system and middleware dependable distributed systems to Masters and Doctoral Programmes.13 Nov 2011 – 42 min – Uploaded by vcilt14Many of the issues considered in other units of this module require a degree of furtherGuides Build Mong...

This burglar alarm system circuit is using a infrared proximity detector that triggers an alarm when the rays falling on its sensor are interrupted. It is different from others burglar alarm systems because is a very simple diy project and can offer you great satisfaction. The circuit of IR burglar alarm system comprises transmitter and receiver-cum-alarm sections. It works off 6V DC, 500mA uninterrupted supply and uses low-cost readily-available electronic components. LED2 is used for indicating power-on. Check out the infrared alarm circuit too. Burglar alarm circuit diagram The transmitted IR signal directly falls on IR sensor TSOP1738. Whenever the IR signal is interrupted, its output pin 3 goes low and IC2 is triggered at pin 5 through transistor T2. As a result, its output at pin 7 goes low (for a preset time) to forward bias siren-driver transistor T2. This condition is indicated by the glowing of LED1. The time-out period can be increased or decreased by changing the value of ...

Circuit Diagram Description The door latch alarm circuits are simple and effective and easy to construct. Normally the alarm is in de-activated mode by keeping the switch s1 in off state which can be done with a lock and key kind of switch. Number of doors can be guarded against the intrusion by keeping or connecting the reed switch in series fitted with the help of a magnet. The reed switch can be fitted in such an way that the magnet is fixed on the door, in normal conditions when the door is closed reed switch will be held close to the magnet and hence the reed switch is kept closed , when the door is opened the reed switch contact is opened , this triggers an SCR, the gate of an SCR is connected to its cathode through the reed switch as long as the switch is closed the SCR dose not fire but when the door is opened the SCR is fired supplying an voltage to the alarm circuit. Source -http://www.electronguide.com/circuits_pages/DoorLatchAlertSystem.html

This reliable and easy-to-operate electronic security system can be used in banks, factories, commercial establishments, houses, etc. The system comprises a monitoring system and several sensing zones. Each sensing zone is provided with a closed-loop switch known as sense switch. Sense switches are fixed onthedoors of premises under security and connected to the monitoring system. As long as the doors are closed, sense switches are also closed. The monitoring system can be installed at a convenient central place for easy operation. Fig. 1 shows the monitoring circuit only for zone 1 along with the common alarm circuit. For other zones, the monitoring circuit is identical, with only the prefixes of components changing as per zone number. Encircled points A, B, and C of each zone monitoring circuit need to be joined to the corresponding points of the alarm circuit (upper half of Fig. 1). Circuit diagram : Fig. 1: Monitoring circuit along with the alarm circuit When zone 1 sensing swi...

        Aerodynamic parameter estimation is an integral part of the Aerosystem design. This project develops an Aerodynamic Monitor for estimating Aerodynamic parameters like speed,location,altitude,Temperature,Pressure,Light etc. The system mainly  uses a GPS(Global Positioning System) that provides reliable location,altitude  and time information in all weather conditions. The main part of the system is LPC 2138 ARM-7 Microcontroller to which the  GPS is interfaced. The system uses Zigbee for wireless communication which is also interfaced to the Microcontroller. The GPS values are transmitted through the  Zigbee and exact position  can be viewed in the Google map. The temperature,Pressure and light parameters can also be determined by the sensors interfaced to the Microcontroller. The air parameters transmitted through Zigbee can be monitored in the user's PC.

Consider a situation where a burglar has entered your house and snapped the telephone wires, leaving you with no means of communication with the outside world. In such an emergency, you will find this intruder alarm to be very handy. It transmits a prerecorded emergency message repeatedly for reception by an FM receiver. The message containing address, geographical location, name, etc is recorded onto a chip. The prerecorded message can then be transmitted repeatedly with the help of an FM transmitter, in the hope that some noble soul will hear it and inform the police about the incident.   Fig. 1: Block diagram of the intruder radio alert system The circuit comprises a sound recording-and-playback chip (UM5506BH). This chip consists of a 96kbit SRAM and can record up to six seconds of audio. (For details, refer ‘Mini Voice Processor’ circuit published in April 2000 issue of EFY.) After the required message has been recorded, it is passed to a low-power, VHF FM transmitter wired ar...

In the close fluid container where the fluid is injected into the container by means of a force pump, the pressure in the container could reach an unsafe level. The pressure operated control system is designed to limit the pressure in the container up to a safe level. Once the pressure exceeds the safe level the force pump should stop injecting the fluid in the container. One means of the force pump pressure up to the safe level is by means of pressure switch PS installed in the container. see figure (A). (A) Close container using the POCS. An example is used in a jetmatic pump. For an open fluid container, a level pressure switch LPS shown in figure (B) is installed at the lower part of the open fluid container. The LPS with associated control circuit will limit the height of the fluid being pump into the open container at a pre-determine level. (B) An open container using the POCS. Other application of POCS using the pressure switches PS and LPS are found in air compressor and high p...

      The project aims to develop a FingerPrint based ATM  Accessing System in which user can make their transactions by fingerprints.  Fingerprint recognition or fingerprint authentication refers to the automated method of verifying a match between two human fingerprints. Fingerprints are one of many forms of biometrics used to identify individuals and verify their identity. A fingerprint sensor is an DSP based electronic device used to capture a digital image of the fingerprint pattern. The captured image is digitally processed to create a biometric template (a collection of extracted features) which is stored and used for matching.       We can use PIC16F877A CMOS FLASH-based 8-bit microcontroller for this project. The microcontroller provides necessary commands for fingerprint searching in the sensor module. In this project, it uses two verification techniques(for more security), the user needs to enter their user name and password, ...

 Honda Gold wing Gl1100 Wiring Diagram Electrical System Harness . This is a new  Honda Gold wing Gl1100 Wiring Diagram Electrical System Harness . Here Is The Wiring Diagram For The Trailer Lights. Polaris Trail Boss 330 Magneto Wiring Harness Circuit Schematic Volkswagen Cabriolet Cruise Control Wiring Schematic. Honda Prelude Wiring Harness Routing And Ground Location 88. Fog Light Wiring Harness Vw Bora Relais.   Anti Theft System And Alarm Circuit Wiring Diagram Circuit Schematic. Help With Fog Light Wiring Problem   Ford Mustang Forums.   Honda Goldwing Gl1100 Wiring Diagram And Electrical System Harness. Wiring Diagram   Sourced By : Circuitsstream

This circuit provides an uninterrupted  power supply (UPS) to operate 12V, 9V and 5V DC-powered instruments at up to 1A current. The backup battery takes up the load without spikes or delay when the mains power gets interrupted. It can also be used as a workbench power supply that provides 12V, 9V and 5V operating voltages. The circuit immediately disconnects the load when the battery voltage reduces to 10.5V to  prevent deep discharge of the battery.  LED1  indication  is  provided  to  show  the full charge voltage level of the battery. miniature white LEDs (LED2 and  LED3) are used as emergency lamps during power failure at night. Circuit diagram : Mini Ups System Circuit Diagram A standard step-down transformer provides 12V of AC, which is rectified by diodes D1 and D2. Capacitor C1 provides ripple-free DC to  charge the battery and to the remaining circuit. When the mains power is  on, diode D3 gets forward biased to charge the battery. Resistor R1 limits the charging current...

Chris from PyroElectro.com has a great article about a do-it-yourself radar system build with PIC18F452. It’s a great hobby project although the schematic is very complicated. This project uses three main devices to create the personal radar system. The IR Range sensor gives output, the pic microcontroller processes it and then displays the output on the led array.   Infrared Radar Circuit Schematic  The goal of this project is to create a working ir radar system. The system will only be required to measure close proximity at an angle of 90 degrees as seen in the example above. The range of system is roughly 4-30cm, 20-150cm & 1m-5.5m depending upon which sensor you choose to use. [ ]

This is a simple PIC Security System Dials Your Cell Phone Circuit Diagram . Do-it-yourself phone dialer security system calls your cell phone, office etc. whenever a door or window is opened, or panic button is pressed. Great Home Alarm. PIC Security System Dials Your Cell Phone Circuit Diagram The circuit consists of a small PIC microcontroller, assembly program, and a few other parts to detect a switch closure from an open door, window, or manual push button and then dial the cell phone number, and transmit a steady tone to indicate the source of the call. The circuit uses the pulse dialing system to interrupt the line connection a number of times to indicate each digit. Pulse dialing (the oldest form of dialing) works by actually disconnecting or "hanging up" the phone line a number of times to indicate each digit. For example, the digit "5" would be dialed by disconnecting and reconnecting the line 5 times in short intervals of about 100mS. There is about a 1 s...