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The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8 load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown. The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater. Features • Up to 30 watts output power • AVO typically 90 dB • Low distortion: 0.015%, 1 kHz, 20 W • Wide power bandwidth: 70 kHz • Protection for A...

HOW TO INITIALIZE THE LCD TV The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized. To put the program back at the factory-default, initialize the LCD TV using the following procedure. 1. Turn the power on. 2. Enter the service mode. - To cancel the service mode, press [ power ] button on the remote control unit. 3. Press red button on the remote control unit to initialize the LCD television. 4. After confirming that “INITIALIZED FINISH” appears on the screen, unplug the AC Cord. How to set up the service mode Service mode: 1. Turn the power on. 2. Press [0], [6], [2], [5], [9], [6] and [INFO] buttons on the remote control unit in this order. The service mode screen appears. To cancel or to exit  press [PREV. CH] button. SMPS SCHEMATIC Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.  If Main Fuse (F1601) is ...

1600W per Channel - Staner uPA 8000 Hi-Power Amplifier - Circuit Diagram Circuit diagram

FlashProg is USB base flash memory programmer to work with 3.3V serial flash memory devices. This programmer is specifically design to read, program and configure 25x series, serial flash memory devices which are commonly used to store BIOS in PC mainboards. Originally we design this project to read and program BIOS of Foxconn G31MXP mainboard. Our version of G31MXP contains Macronix MX25L8005 8M-Bit serial flash memory and we use this programmer to load some of our custom BIOS to this serial memory. [ ]

                                    This is variable DC power supply circuit, or we can call it adjustable DC power supply which give us a 1.2V-25V output voltage. The power supply schematic above is taken from the datasheet of regulator LM338K manufactured National Semiconductor. The circuit uses IC LM338K as the voltage regulator, so we will get the stable and regulated output. The regulator IC LM338K provides 5A output current max, and the voltage from 1.2 to 32V, it also featured the integrated thermal and short-circuit protection. Maximum voltage at input and output of the regulator is 35V . The transformer current value depends your needs. For example, if you need 120W power output then you’ll need 5A transformer. 5A x 24V (full power) will give you 120W output power. Since this power supply circuit described to give us 1.2-25V DC output, then you must have transformer with 24V AC output. Fo...

Burning on the circuit board EWM1000   In case of burning on the main circuit board, check that the problem is not caused by another electrical component (short-circuits, poor insulation, water leakage).   Refer to the figures below in order to identify the component that might have caused the burning according to the position of the burned area.   The circuit board shown below is the version with the greatest number of components: other boards may not feature all these components (relay K4 and buzzer). 1 . NTC washing temperature sensor 2 . Drain pump 3 . Power supply 4 . Motor 5 . Heating element 6 . Door safety interlock 7 . Water fill solenoids 8 . Tachymetric generator (motor) 9 . Drum positioning system (top-loaders) Pushbutton – led side (horizontal buttons) & Pushbutton – led side (vertical buttons) Connectors on circuit board EWM1000 1 . --- 2 . Drain pump 3 . Power supply 4 . Motor 5 . Heating element 6 . Door safety interlock 7 . Water fill solenoids 8 . T...

Eridani is a LM3S3651 based general purpose development board with USB Host/Device/OTG. You can buy one here. This documentation should help you use it effectively. All of the details on how to setup toolchains for this board are filed under getting started. [ ]

Specifications Dimensions Inches . . . . . . . . . . . . . . . . 11½ x 11½ x 11½" Metric . . . . . . . . . . . . . . . . 29.2 x 29.2 x 29.2cm plus 1¼" (32mm) for feet. Driver . . . . . . . . . . . . . . . . 8" Woofer Nominal Impedance . . . . . . . . . . . . 4  Enclosure Design. . . . . . . . . . . . . Tuned Port Amplifier Power . . . . . . . . . . . . . 50 watts RMS Frequency Response . . . . . . . . . . . 45Hz - 150Hz (± 3dB) Crossover Frequency . . . . . . . . . . . 50 to 150 Hz Continuously Variable 1. Auto Power - This Auto On/Off switch controls whether the BU1’s Automatic turn-on circuit is active. When the switch is ON , the BU1 will turn itself on, indicated by a green LED, when it is plugged in and receiving a signal. When the BU1 has not received a signal for approximately ten minutes, the unit will revert to the STANDBY mode, indicated by a red LED. When this switch is OFF, the unit will revert to the STANDBY mode and will stay OFF, regardless of input signa...

Liquipel™ is a revolutionary process that applies a watersafe™ coating to your electronic devices to protect them in the event of accidental exposure to liquids. It is not visible to the human eye, virtually undetectable and Liquipel™ will not compromise the look, feel, and performance of your electronics. Liquipel™ is a Nano-Coating that is applied though a propriety process. This process starts by placing devices into the chamber of the Liquipel™ Machine. The Machine then removes all the air to create a vacuum, a special formula is then introduced as a vapor. The vapor then permeates the entire device inside and out, Liquipel™ then bonds to the device on a molecular level, leaving your device watersafe™ for years to come. Check out our GITEX 2012 Trade video coverage to see Liquipel in action.

That is how a lone mosquito irritates you in the middle of the night trying to convince you that his lullaby is helpful. Insignificant or not, But truly that is the underlying inspiration for this project. The Mosquito repellents have this obnoxious smell that I would not like to sleep in and these loner mosquitoes who just piss me off by buzzing in the ear, you have to choose a lesser evil. Obviously, I turned ON the repellent and in a while it goes off but the smell starts building up and I am too lazy to turn it back OFF, leaving the warmed blanket on a chilly Delhi December Night. The nocturnal dilemma . [ ]

  Do not touch the LIVE side GND or the LIVE side GND and the ISOLATED (NEUTRAL) side GND simultaneously. If the above caution is not respected, an electric shock may be caused. Therefore, make sure that the power cord is surely removed from the receptacle when, for example, the chassis is pulled out.   Do not short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or never measure with a measuring apparatus measure with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND and ISOLATED (NEUTRAL) side GND at the same time.  If the above precaution is not respected, a fuse or any parts will be broken. Click on the pictures to magnify PWB Voltage chart

The AVR Stick is a simple data logging device that instantiates itself as an HID keyboard and reports the voltages, along with a ‘timestamp,’ from two pins on an ATtiny85. The device uses open source firmware availabe from Objective Development (http://www.obdev.at/vusb/) called V-USB to implement the USB 1.1 standard. The code that runs the application was based on the EasyLogger example application from Objective development. [ ]