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Open Circuits – Open Source Electronics

 Circuits, Projects  No Responses »
Mar 012011
 

Open Circuits is a wiki for sharing open source electronics knowledge, schematics, board layouts, ports and parts libraries. This include open hardware Music Players, atomic microscopes, PC, PDA and mobile phones, and batteries. Please help us to build this resource by submitting your component descriptions, projects, techniques, and PCB footprints.

Open Circuits – Open Source Electronics

Some Projects that look Interesting are

  • Multi-purpose Embedded System
  • dsPIC33 Development Board
  • ADuC832 Development Board
  • N8VEM Home Brew Computing Project

The Open Source Movement, typically covers Open Hardware, Open Firmware, and Open Software. The Open Firmware movement provides firmware which you may also know as soft-IP or FPGA coding see Open Cores for more details.

Excellent examples of Open Hardware projects range from projects at OpenCircuits to Tiny Embedded Ethernet Devices and Advanced & Intelligent Camera Designs which provide solid-state camera and FPGA assisted hardware designs. A solid overview of projects can also be found at Open Innovation Projects.

 Posted by delabs at 4:04 pm

Sci.Electronics.Repair FAQ

 Circuits  No Responses »
Feb 092011
 

Sci.Electronics.Repair Frequently Asked Question(s) (or S.E.R FAQ for short) Home Page. This site features Samuel M. Goldwasser’s latest and greatest “Notes on the Troubleshooting and Repair of…” series of comprehensive repair guides for consumer electronics equipment and other household devices.

Sci.Electronics.Repair FAQ

There is also a great deal of other information of interest to the electronics hobbyist, experimenter, technician, engineer, and possibly even the dentist and poet. Included are the now quite comprehensive and massive “Sam’s Laser FAQ”.

Sam’s Laser FAQ has a great deal of information on a variety of laser and optics related topics including a comprehensive treatment of diode, helium-neon, argon/krypton ion, and CO2 lasers as well as amateur laser construction including numerous examples of truly home-built lasers. Much of this is not available anywhere else either on-line or in print!


 Posted by delabs at 7:34 am

Interface ICL7135 Voltmeter to Atmel 89C52 or PC

 Circuits, Embedded  No Responses »
Aug 022009
 

This circuit is an interface between 89C52 of Atmel with 7135 of Intersil. With This circuit you can read analog data of both polarities you can change the range scale with extra circuits, you can store data on a EEPROM or send them to PC thru RS232 or Comm port. ICL7135 to Printer port Interface The four Digit Drive outputs and four BCD outputs of the Multiplexed Display Driver of 7135, along with A-D status output which is also four, are routed to four input pins on printer port via three 74HCT373 Digital Switches. This is because we have less [Read More ....]

 Posted by delabs at 8:01 pm

TechLib – Electronic Experimenter Records

 Circuits  No Responses »
Jun 242009
 

TechLib – Electronic Experimenter Records A technical library for the hobbyist and experimenter. – Charles Wenzel World’s Smallest Geiger Counter Karen’s Mic. Input Telemetry Device Temperature Controlled Ovens Two-Transistor Atomic Frequency Standard Super-Sensitive Ionization Chamber Cockcroft-Walton Diode Voltage Multipliers

 Posted by delabs at 6:40 pm

delabs Schematics on WordPress and Laughing Squid

 Circuits  Comments Off
Mar 312009
 
delabs Schematics on Wordpress and Laughing Squid

delabs Schematics now on a WordPress, you can comment on the circuits if you need more details. I will try to clarify your doubt or suggest extra reading. Electronics Circuits is now Hosted on Laughing Squid. It is a Copper Squid, That makes it more Electrifying !

 Posted by delabs at 5:55 pm

SWTPC Computer Documentation Repository

 Basic Electronics, Circuits  No Responses »
Oct 212008
 
SWTPC Computer Documentation Repository

SWTPC Computer Documentation Repository This site’s purpose is to address the lack of technical information for some of the rarer vintage computers and related peripherals, with a strong focus on SWTPC. More than 600 pages of assembly instructions, schematics, program listings, catalogs, photos and much, much more! Bill’s Knowledge Base Michael Holley’s massive SWTPC doc collection. Popular Electronics Radio-Electronics Hands-on Electronics

 Posted by delabs at 8:50 am

Circuits using only discrete devices

 Circuits, Discrete Passive  No Responses »
Oct 182008
 

Here are circuits made of Resistors, Capacitors and Inductors which are passive components. Crystals, Thermistors, Varistors, Variable Passive RLC are also Passive Parts. Zeners, Diodes, NPN-PNP Transistors, FET, MOSFET, SCR, Triacs are all discrete active devices. Circuits using only discrete devices Isolated dual power supply from 5V Telephone LED status indicator Music Sound to light converter Simple Water operated relay LED Voltage Level Indicator Basic Relay or Solenoid Driver Mains Voltage Current LED Indicators Triac based Lamp Dimmer power control More discrete devices circuits below Neon Flasher circuit Voltage Doubler to boost 3V FET Current Source Constant Current Source LED [Read More ....]

 Posted by delabs at 9:05 am

Power Electronics and Mains Power

 Circuits, Electrical, Power Electronics  No Responses »
Oct 182008
 

I have updated some pages, and integrated new pages with some explanations. These are related to mains power and power electronics. – ananth Tables related to Power Electronics High Resistance Insulation Materials Mains Voltage Power Transformers Ohms Law – Amps Volts Watts Relation Mains Voltage and Power Circuits Stabilizer Step up 230V AC 500VA Solid-State Stabilizer Step up 110V AC Mains Voltage Current LED Indicators Simple Mains Voltage monitor LM324 Mains Voltage monitor using LM3914 Triac based Lamp Dimmer power control Discrete devices – circuits Isolated dual power supply from 5V Basic Relay or Solenoid Driver

 Posted by delabs at 7:06 am

Measureall Workbench Test Instrument

 Circuits, Instrumentation, Projects  No Responses »
Sep 282008
 
Measureall Workbench Test Instrument

This was a Student Project of mine, it is a very basic instruments that could do most of the tasks on a test bench. The cabinet used, was available as a part of a Hi-Fi DIY System, The Range and Mode switches were Modular Stackable Interlocked MultiPole Switches. The rest of the Interface were wirewound pots, jacks, sockets and plugs. The front panel was Engraved Acrylic, the panel was the toughest issue we tackled. I wanted it to look well engineered, at least on the outside. It was a total analog instrument except for the digital indication of ICL7107. Thanks [Read More ....]

 Posted by delabs at 9:04 am  Tagged with:
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