Analog Devices Circuit Note CN-0038 Circuit Function and Benefits This circuit provides a programmable gain function using a multiplying DAC and an operational amplifier (op amp). The maximum gain value and the temperature coefficient are set by ...
Introduction Data loss is a concern in telecom, industrial and automotive applications where embedded systems depend on a consistent supply of power. Sudden power interruptions can corrupt data during read and write operations for hard drives and ...
A microcontroller requires dc operating power in the 2 to 5.5 V range, an amount that a battery or a secondary power source can easily supply. However, in certain situations, a microcontroller-based product must operate directly from a 120 or 220 ...
Francois AUGER Philippe Fretaud EDN Many previous Design Ideas [1, 2] have shown how to use the Charlieplexing technique [3] to drive as many LEDs as possible with a minimum number of I/O lines. This Design Idea shows how you can drive three LEDs ...
Andreas Freiherr VishayOpto Creating a “Magic” Cat Doorbell with the TSSP4P38 Proximity Sensor Leonie and her family live in a building with seven other families. Like many cats, Leonie loves to explore her surroundings, and after ...
Ricardo Jiménez and Juan C. Ángeles Electronic Design A basic microcontroller can be used to convert a sensor's analog output into a pulse train, thereby making the output compatible with standard digital I/O ports. When the need ...
An inexpensive way to implement high-resolution digital-to-analog conversion is to combine microcontroller-PWM (pulse-width-modulated) outputs with precision analog-voltage references, CMOS switches, and analog filtering ( Reference 1 ). However, ...
Part 1 Software The software for the datalogger is download section (PIC_DATALOG_V00d). I use Mikroc Pro PIC compiler from mikroElektronika , the libraries of this compiler are great! Especially the FAT32 library, it allows to manage the micro SD ...
Part 1 - Hardware: Schematic, PCB and case. Hi all! I’m continuing here with the last board I design and now I’m continuing testing. It’s a battery-powered small datalogger based on a PIC18F2620 microcontroller (Figure 1). The ...
Ioan Ciascai EDN Reading quadrature encoder signals at high speeds (e.g., 1 MHz, or, 1 m/s with a resolution of 1 um) often requires dedicated hardware. This Design Idea shows a simple scheme to accomplish this function using only an ATtiny2313A ...