Month: June, 2008

Data Communications and Wifi Chips

29 June, 2008 (16:23) | RF-Wireless | No comments

Data Communications, Mobile, HandHeld and Wifi Chips for Internet Web Phones.

ST - Wireless communication
Wireless Handsets Solutions - TI
National Semiconductor - Wireless Bluetooth PLL
Atmel - broadband digital communication
Communications and Networking - Maxim
Intersil - Data Communications
Wireless Solutions - AD

Computer to Device Data Interface

27 June, 2008 (20:10) | Data Interface | No comments

Parallel Printer Port

Parallel Port Relay Interface.
Printer Port at ePanorama.
Interfacing IBM-PC Parallel Printer Port.
Parallel Port Interfacing, Inpout32.dll.
Parallel Port Opto-isolator.
Parallel port to drive a LED -read a switch from tcl.
The PC’s Parallel Port.
Printer Port Page

Resources

Hardware Book
Jan Axelson’s Lakeview Research.
PC and Embedded Interfaces. .

USB, CAN and Ethernet

USB and GLCD Expansion Board.
IP & Ethernet Interfaces.
FTDI Wireless Networking Modules.
Control of [...]

Build your own Meters and Instruments

26 June, 2008 (17:04) | Instrumentation | No comments

These are basic measuring circuits you can build for your home lab.
I have documented a lab DMM i had built for my use many years ago. the circuits may have errors, build it only if you understand.

DMM or digital multi meter
LM3914 analog display
3-1/2 digital display
Power supply with battery
DMM range and AC-DC mode
AC conversion continuity
Voltage attenuator [...]

Watlow Reference

24 June, 2008 (11:10) | Process Control | No comments

Watlow - Reference Data Watlow reference data provides information for amperage conversions, thermocouple types, RTD tolerances and more.
Watlow Ltd- Reference - Guides and Tutorials
Watlow is the leader in engineering and manufacturing custom commercial electric heaters. … offer electric heating elements, industrial heaters…

Omega Technical Reference

24 June, 2008 (09:45) | Process Control | No comments

Omega Technical Reference
Omega’s Technical Reference Section. Find technical articles and reference material about our products and technologies.
Omega Engineering
Source for process measurement and control. Everything from thermocouples to chart recorders. Temperature, flow and level, data acquisition.

Connection Diagram of DC PCB SSR

24 June, 2008 (08:40) | Power Electronics | No comments

This is an Application note i used to give with my ssr - app012.pdf - Ananth
Diagram of SSR 5000 DC 3-30 Control / 230V AC N.O. @ 3A.
This is a Thyristor Based Normally Open 230V Switch that can be turned on / off at a fast rate. This switches at Zero Crossover . Use 5V [...]

Dual-Low-Noise-JFET-Opamp-TL072-TI

24 June, 2008 (05:50) | Integrated Circuits | No comments

Dual-Low-Noise-JFET-Opamp-TL072-TI The JFET-input operational amplifiers in the TL07x series are designed as low-noise versions of the TL08x series amplifiers with low input bias and offset currents and fast slew rate. The low harmonic distortion and low noise make the TL07x series ideally suited for high-fidelity and audio preamplifier applications. Each amplifier features JFET inputs (for [...]