Data Communications, Mobile, HandHeld and Wifi Chips for Internet Web Phones.
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
USB, CAN and Ethernet
- USB and GLCD Expansion Board.
- IP & Ethernet Interfaces.
- FTDI Wireless Networking Modules.
- Control of Stepping Motors.
- CAN Remote Automation-Control with AVR.
- Digital Circuit Simulation on the Web.
- CAN in Automation
T&M Instruments
- Parallel Port Scope from picotech.
- Bitscope using USB or Ethernet, Mixed Signal Oscilloscopes
- The Fabulous Logic Analyzer.
- Palm Logic Analyzer.
- MiniLA – logic analyzer SW & HW.
- Parallax – Design Contest – Logic Analyzer.
- Printer port – programmable frequency generator.
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 amp Current Shunt Amplifier Resistance Current Source Analog Buffer and Inverter Analog Dial AVO Amps-Volts-Ohms meter This was designed, keeping in mind, that sometimes we have few components available and we could be flat broke. Even that [Read More ....]
Jun 242008
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… Here is a Page from an Old Watlow Catalog i have. From Electronic Catalogs
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.
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 DC for Best Results. No moving parts hence no wear and tear. Dissipates Heat when in On Condition 5 Watts @ 3 Amps. Mount with adequate Air Ventilation for 3 Amps. Dissipation is 1.4 Watts per Amp thru Load. Input to Output is [Read More ....]
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 high input impedance) coupled with bipolar output stages integrated on a single monolithic chip. Low Power Consumption Low Input Bias and Offset Currents Low Noise High Input Impedance JFET Input Stage High Slew Rate – 13 V/µs Typ Common-Mode Input Voltage Range Includes VCC+
Wenzel Associates Technical Library Time and Frequency Circuits and Articles including frequency synthesis and conversion. Crystal Oscillator Tutorial Articles cover oscillator types, terminology, and selection. Spreadsheets/ Programs to calculate pll response, phase noise under vibration, and others. Techlib.com Hobby circuits and other information. World’s Smallest Geiger Counter Karen’s Electrometer Selected Reprints (courtesy of RF Design magazine.)
This is an Application note i used to give with my ssr – app011.pdf – Ananth SSR or Solid State Relay or Electronic Relay This is a Thyristor Based Normally Open 230V Switch that can be turned on / off at a fast rate. This switches at Zero Crossover .Built In Snubber reduces EMI and protects the SSR. USE SAME PHASE FOR I/P & O/P. No moving parts hence no wear and tear. Dissipates Heat when in On Condition. Use adequate Heat Sink or SSR will fail. ( 10g / Amp) Dissipation is 1.5 Watts per Amp thru Load. Input [Read More ....]
