Scheme-it

A complete 3kW, 48 V / 12 V buck-boost converter has been designed utilizing an insulated metal substrate (IMS) with a heatsink for the power stage, with a standard FR4 controller board mounted on top and features six modular power stages capable of 500 W each.

DC720A | High-Voltage Synchronous Current Mode Step-Down Controller

The latest development on robotics already go beyond of what we expected. However, this development comes with fear that someday it will be miscarried, then it will become revolutionary to human. This design features a simple robotic arm control that can be customized with respect to the materials you want to use specifically on the type of motor. It can drive a regular dc motor provided that it is able to run with an output current of 0.6 to 1.2A and output voltage clamp of +45V (low side) and -20V (high side) during inductive switching. It is fault protected that loss of ground will not damage an IC. It also features short-circuit detection and current limiting with automatic retry. The system itself has internal reverse battery protection on VPWR , which is good in power management.

The MMA955xL platform as a sensor hub is an intelligent sensing hub with built-in accelerometer, signal conditioning, and data conversion with 32-bit programmable microcontroller and temperature sensor. In addition, it has a second I2C bus and one external analog input, which can be monitored using the on-chip Analog-to-Digital (ADC). This unique blend transforms Freescale's MMA955xL into an intelligent, high precision, motion-sensing platform able to manage multiple sensor inputs.

The Freescale's MC33899VW programmable H-bridge power integrated circuit is designed to drive a DC motor in both forward and reverse rotation under pulse width modulation control. It has synchronous rectification control of the high side MOSFETs and has the ability to control both an SPI-selectable slew rate and current limit that is needed for performance and noise suppression.

An active lifestyle is important in which it prevents people from getting ill while they're maintaining a healthy body. According to some experts, a correct exercise should be scheduled properly with right duration or number of moves. This design circuit features a pedometer that is included in a sensing platform of a Freescale Integrated Circuit (IC). It is compact that minimal external components are required. The sensing platform itself has its own flash and random access memory that can be used to handle more functions. The temperature sensor is also embedded to the system that needs no additional external temperature sensor. It has a dedicated 32-bit programmable microcontroller with 16-KB flash memory and 2-KB random access memory that can be used for different purposes. Its system has ROM-based flash controller and slave-port, command-line interpreter that can also help to some embedded development projects.

This diagram is the H-bridge motor control with 556 dual timer. In this design, instead of using a microcontroller, it uses a 556 dual timer circuit for controlling the motor, which makes the circuit low cost. The design is only limited to controlling the direction of the motor, whether operate the motor in a forward or reverse direction. The H-bridge used in the circuit is the MC33186HVW2 from Freescale Semiconductor.

There are several types of Field Programmable Gate Array (FPGA), each varies according to the application requirements and functions. An FPGA is a logic device that contains programmable switches and a two-dimensional array of generic logic cells. A logic cell can be programmed to perform a simple function, and a programmable switch can be customized to provide interconnections among the logic cells. Specifying the function of each logic cell and selectively setting the connection of each programmable switch can implement a custom design. The Altera Stratix II GX FPGA features small form-factor pluggable-plus (SFP/SFP+) compact optical transceiver connectors, a high-density Altera Stratix II GX FPGA.

Nowadays, threats and crimes have risen in number. With the technology today, people can make use of security system designs to prevent such bad events. One security system design that is widely available in the market today is the video surveillance system over an IP network. With this digital video surveillance system, people can gain more advantages than using the traditional analog surveillance system. Some advantages would be superior image quality, future-proof integration, scalability, cost-effectiveness, easy installation and remote accessibility.

This project addressed the matter on how to interface an accelerometer sensor to a microcontroller. The accelerometer used is a FXLN8361QR1, a 3-axis, low-power, low-g, analog output accelerometers that consist of an acceleration sensor. The analog outputs for the X, Y, and Z axes are internally compensated for zero-g offset and sensitivity, and then buffered to the output pads. The outputs have a fixed zero-g offset of 0.75V, irrespective of the VDD supply voltage. The bandwidth of the output signal for each axis may be independently adjusted using external capacitors.