The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
4 Channel Pulse Width Modulation Generator
2 with I C Interface Proposal Version 0.00
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
64% of the total text.
Page 1 of 6
Four Channel Pulse Width Modulation Generator with I2C Interface
4 Channel Pulse Width Modulation Generator 2with IC Interface Proposal Version 0.00
Page 2 of 6
This document describes an integrated circuit for generating multiple independent PWM waveforms for fan control circuits. A 2low pin count, and IC interface allows addition of this circuit to applications with minimal cost.
Date Revision Description 10/12/99 0.00 Proposal Initial proposal for Integrated circuit.
Page 3 of 6
This document present design guidelines for the implementation of a four-channel pulse width modulation circuit. Low pin count, allows simple placement into applications. Configuration is done via I2C access. This provides a simple interface to a microcontroller. Functionality is adequate for controlling fan speed circuits.
This document does not address electrical concerns.
3 Pin definitions
Low pin count design allows simple placement to applications. All logic for generating PWM waveforms is provided in this circuit.