App note: Implementing digital lock-in amplifiers using the dsPIC DSC

Here is an app note from Microchip describing how to use dsPIC digital signal processors to implement digital lock-in amplifiers. Lock-in amplifiers use phase-sensitive detection to measure the presence of small signals buried in large amounts of noise. By measuring the coherent system response from an incoming AC signal, the digital lock-in amplifier can detect […]

App note: 1000VA Digital pure sine UPS

Here’s a reference design from Microchip for a 1000VA pure sine uninterpretable uninterruptible power supply. UPS usually use 3 circuits to function. A charger for battery, a inverter to convert DC battery power to mains AC, and a controller that switches from mains to battery when the power is interrupted. This design utilizes a single […]

App note: Digital HID Ballast Reference Design

High intensity discharge ballasts, used in cars today, require a large set of analog controllers to ignite an HID bulb and reach steady-state operation. This reference design from Microchip describes how to make an HID ballast using a dsPIC and a few discrete components. The reference design uses 9-16VDC and outputs 35W of steady state […]

Microchip announces new 16-bit PIC® MCUs & dsPIC® DSCs

Microchip Technology Inc. today announced a new series of 16-bit PIC® microcontrollers (MCUs) and dsPIC® Digital Signal Controllers (DSCs) that bring advanced control to cost-sensitive general-purpose and motor-control designs. The general-purpose dsPIC33FJ16 “GP” devices include a Real-Time Clock/Calendar and up to 21 general-purpose output pins, making them ideal for driving intelligent sensors. The dsPIC33FJ16 and […]