Advanced Topology USB Battery Charger Optimizes Power Utilization for Faster Charging - Design Notes 336: The LTC4055 seamlessly manages power flow between an AC adapter, USB cable and Li-ion battery, all while maintaining USB power specification compliance. __ Linear Technology/Analog Devices AeroComm CL4490 Experiments - Wireless data networking experiments using AeroComm modules and data modems. __ Amateur Radio circuits from Green Bay Professional Packet Radio
AFSK 1200 Modem Based on PIC16c620 - Schematic Only__
AIU: Analog Interface Unit - if you need to add simple data acquisition capabilities to your PC, n look no furr than Analog interface Unit. The Analog interface Unit (AiU) is a simple circuit that connects to a PC parallel port, and allows you to sample and output 8-bit analog signals under software control __ Designed by David L. Jones
Aladin interface - Whoever thinks about reproducing an interface for the Aladin, should first of all be aware of the fact that there are two different versions of the interface. The first version, easier to assemble, enables the user to transfer dive data from the Aladin to the personal computer. The other version, a more complex construction than the first one, enables the user both to transfer data from the Aladin to the PC and to configure some Aladin features via the PC. __ Designed by Matthias
All-In-One USB Power Management IC Solution - DN1008 Design Notes__ Linear Technology/Analog Devices
AM Transmitter - The circuit is in two halfs, an audio amplifier and an RF oscillator. The oscillator is built around Q1 and associated components. The tank circuit L1 and VC1 is tunable from about 500kHz to 1600KHz. __ Designed by Andy Collison
Amplifier & Current Source Emulate Instrumentation Amplifier - 11/13/03 EDN Design Ideas: The classic three- or two-op-amp instrumentation-amplifier circuits are standard ways to amplify a small-amplitude differential signal contaminated with high common-mode noise. In some applications, the signal source is floating wi Design by Dobromir Dobrev, Jet Electronics, Sofia, Bulgaria
An 8-Channel PC Relay Board - Control devices via your PC parallel port with this eight-channel relay board.__ SiliconChip
An Experiment to Build a PCI Board - This is the simplest bus cycle. Target devices detect the start of the bus cycle by the FRAME# is asserted at the second clock. At a bus cycle is initiated, the bus comand the address is taken in to each target device attached to __ Designed by Radio LocMan
An Improved Infrared Receiver with status LED (Billy's Plug) - This is the latest version of the improved infrared Receiver with Status LED which can control any desktop PC with an ordinary remote control. The project comes along with a small PCB in order to save space. It connects to the serial port as stated in the schematic and uses the freeware Girder (www. girder. nl) software together __ Contact IQ Technologies
An OBDII Interface for a Laptop Computer - if you have a laptop PC you can build your own OBDiI interface so you can access all the information available to a dedicated hand-held scan tool but at a much lower cost. Not only can you access all the fault codes in your car's ECU but you can then store them in your laptop for future reference.__ SiliconChip
Analog multiplexer uses flying capacitors - 01/22/04 EDN Design Ideas: This design idea describes a way to increase the number of analog inputs to your microcontroller for cases in which adding an analog-multiplexer chip or upgrading to a microcontroller withinputs might be impractical. If the microcon Design by Dick Cappels, Mesa, AZ
Analog switch expands I2C interface - 11/22/01 EDN Design Ideas: Perhaps the most effective way to gain board space and increase component density is to minimize wiring on the board. A widely used architecture that allows such miniaturization is the i2C bus. Comprising only a bidirectional data line, SDA, and a clock line, SCL, this bus requires no chip selects or other additional connections Design by Luca Vassalli, Maxim Integrated Products, Sunnyvale, CA
Analog-to-Digital Conversion Notes - This chapter shows how to connect an analogue signal to a PIC .
An analogue signal is similar to a sine wave and is generally less than 5v (5, 000mV) in amplitude. Low-level signals are generally expressed in mV, to make them instantly recognisable and easy to talk about. __ Designed by Colin Mitchell
Analog-To-Digital Converter - Normally analogue-to-digital con-verter (ADC) needs interfacing through a microprocessor to convert analogue data into digital format. This requires hardware and necessary software, resulting in increased complexity and hence total cost. The circuit of A-to-D converter shown here is configured around ADC 0808, avoiding use of a microprocessor. __
Analogue to Digital Converter for PC Serial Port - This circuit is a simple adapter for PC parallel port to think that there is a printer connected to computer. This adapter is useful for testing printing speed with different software and as a part of your own designs.
You can use this circuit to connect your simple circuits to the parallel port __ Designed by Tomi Engdahl
Animated Weather LED Display - 21-Mar-14 -Design News: This project displays the weather in the form of an animation on an LED matrix (32x32 resolution or 1024 LEDs). The Raspberry PI is periodically pulling weather conditions from the internet and then sending a corresponding animated gif weather animation to the iOiO board and LED display. IOiO is an __ Gadget Freak-Case #252
Apple II/II+/IIe IDE Drive Interface - The following document describes the current status of an iDE Drive interface for the Apple ii/ii+/iie. The project is not complete. The interface shown here allows the iDE Drive registers to be accessed from the Apple ii. The outstanding item is the completion of the required EPROM so ProDOS recognizes the card as a block device. Work on this EPROM is currently in progress __ Designed by Andrew Quinn
Arduino WebRadio player - An inexpensive WebRadio station player that plays audio streams up-to 64-kbps. Few components (as always !) with great sound quality! __ Designed by © Vassilis Serasidis
Assembly Language Programming: the 8051 Microprocessor - Handout for my 3rd Year students. __ Designed by Wichit Sirichote
Assorted Computer Interfaces - several circuits here, spend some time and view each of them __ Designed by YO5OFH, Csaba Gajdos
AT Keyboard Interface V1.04 - Sometimes you only need a simple and cheap RS232 terminal to get sufficient control over a PC or a RS232 device. There is no need, no space or even no power to place a monitor, a computer case and a keyboard. Maybe there exists also __ Designed by Radio LocMan
AT PC Power Supply 1 - Schematic only, no text included__
AT PC Power Supply 2 - Schematic only, no text included__
AT PC Power Supply 3 - Schematic only, no text included__
AT PC Power Supply 4 - Schematic only, no text included__
AT PC Power Supply 5 - Schematic only, no text included __ Designed by Zsolt Sebestyen pro2sebiatinterware.hu |