EDN

PWM Controller for Creating LED Rainbow

This LED rainbow project creates a RGB LED PWM controller with minimal amount of components including a PIC processor. This LED rainbow project creates a RGB LED PWM controller with minimal amount of ...
Machine Design

Which PWM motor-control IC is best for your application

Pulse width modulation is a form of signal communication that transposes a signal from analog to digital form. Analog signals with changing amplitude and frequency pass through a comparator and are ...
Embedded

Using a programmable system-on-chip for fan control

Withclosed loop speed control, the fan controller ensures that the fan isrunning at the desired speed by measuring the actual speed and adjustingthe duty cycle accordingly. Here the host specifies the ...
EDN

Higher switching frequencies demand better control of PWM duty cycles

The trend is clear: The Power Supply industry is starting to accept full-digital control of Switch Mode Power Supplies (SMPS) as a viable control technology. The advantages this trend brings are ...
Electronic Design

Voltage Regulators Rev Up PWM-Based Fan Control

The simplest of fan-control schemes — an on-off switch — is simple but inefficient, because it provides more cooling than necessary most of the time. When on, the fully powered switch-controlled fan ...