Electrical

Electrical Engineering, Control Panels and Alternative Energy.

Insulation Resistance Testing – AEMC

 Electrical, Instrumentation  No Responses »
May 172011
 
Insulation Resistance Testing - AEMC

This Insulation Testing Reference by AEMC Instruments is a Must Read for all Instrumentation and Electrical Professionals. Even Students and Enthusiasts who want to learn more about Insulation, can find this informative. The other reference articles also are of Learning Interest. Insulation Testing is a Part of Power, Energy, Green, Solar Systems as well. It is an Important part of Product Safety. Megohmmeters/Insulation – AMEC Read -Understanding Insulation Resistance Testing AEMC is an industry leader in current measurement probes, power quality analyzers, ground resistance testers and insulation resistance testers. It was Founded in 1893. AEMC Instruments – 200 Foxborough Blvd., [Read More ....]

 Posted by delabs at 4:07 pm  Tagged with:

Industrial Control Panels and Instruments

 Electrical, Process Control  No Responses »
May 262010
 

Temperature and Pressure Controllers form a large part of Process control Instrumentation. Then you have Flow, Humidity and many more custom parameters. All Real Life Physical Phenomena are reduced to Analog Numbers by Sensors and Transducers. This analog value is amplified and linearized and brought into standardized windows like 1-5 Volts or 4-20mA and more. These Analog Values go to Analog Closed Loop Controllers or Meters for Measurement and Control. In Embedded Controllers, the Analog is converted to Digital ( At least 12 bit, 8 bits are cheap not used for industrial automation, more than 16 bits is not required [Read More ....]

 Posted by delabs at 9:50 pm

Uninterrupted Power Distribution for Homes

 Electrical, Power Electronics  No Responses »
Jan 142010
 

The Enhancement of Mains power system for Homes and Small Business is critical. The population is more now and the use of electricity for more appliances becomes inevitable, this makes power shortages imminent. The power to Homes can be distributed by two types of phase lines (live), a common neutral and the usual earth. High Phase is for Heaters and Motors and some lighting too. This phase can be shut down on power failure, load management or over use. The other is the Green Energy line, a low current phase which never fails! It is used only for lighting and [Read More ....]

 Posted by delabs at 10:02 pm

Production Notes – Electrical – 02

 Electrical, Power Electronics  Comments Off
Jan 142009
 

All Electronic Products have interfaces to external electrical circuits. The power supply is also derived using converters or power supplies. Motors, Heaters and Transformers are examples of components in the electric power circuits. 12V lead acid batteries should be charged with a constant current CC and constant voltage charger the CV being 13.6V. Deep discharge and over charging will reduce the cycles. Lead acid batteries need a monthly distilled water update to ensure long life, sealed lead acid dont need attention. Keep lead acid batteries in well ventilated area due to acid fumes. Electric Shock can kill hence take great [Read More ....]

 Posted by delabs at 8:50 am

Production Notes – Electromechanical – 01

 Basic Electronics, Electrical  Comments Off
Jan 132009
 

Production, especially prototype testing and Pilot Production exposes lot of engineering and serviceability issues. When you mass produce, it is more streamlined, yet the scope for improvement never ends. The process should always be open to feedback and improvements. The tracks or components on a PCB should not be near the mounting holes, the tracks may form electrical connections with the cabinet earth if they touch the pillar, washer or nut-bolt. When you tighten the screws-nuts-bolt, limit torque by feeling or with torque limit screwdrivers, or thread will slip or PCB-Cabinet break, or CRT-Glass-Plastic will crack-shatter. After assembly and testing [Read More ....]

 Posted by delabs at 6:25 pm

Jonard Industries – Precision Hand Tools

 Basic Electronics, Electrical  Comments Off
Jan 062009
 
Jonard Industries - Precision Hand Tools

Here are two pages from an old OK Industries catalog, now part of Jonard Industries. They have wire wrapping systems, which help build test systems, custom solutions easily. They have many Tools which improve productivity for the Electronics Manufacturing Industries. “Jonard Industries Corp is a World Class Manufacturer of Precision Hand Tools for the Telecom, Computer, Military and Electronic Industries.” Test Instruments bench rack from OK Industries From Electronic Catalogs This is a Mini Electric Drill of OK Industries From Electronic Catalogs

 Posted by delabs at 5:45 pm

Kilowatt Classroom Electrical Training

 Electrical  Comments Off
Nov 022008
 

Kilowatt Classroom Electrical Training The Industrial Electricians Notebook Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations. If you like, you can download, print, and assemble your own electrical book. Electrical Books Free On-Line Electrical Books Industrial Electrical Systems Basic Industrial Electronics “After fifty years of electrical work I am retiring. The Kilowatt Classroom web site will continue and is being revised and expanded.” Elwood Gilliland

 Posted by delabs at 8:57 am

GE Industrial Systems – Design Resources

 Electrical, Process Control  Comments Off
Oct 312008
 

Design Resources Information for electrical engineers when designing or specifying GE equipment. Publication Library Technical documentation, time current curves, CSI Specifications. GE Industrial Systems Programs available that provide analytical tools, advanced power quality analysis, monitor energy consumption, and manage loads.

 Posted by delabs at 12:46 pm

Electromagnetic Relays and SSR

 Electrical, Power Electronics  Comments Off
Oct 282008
 
Electromagnetic Relays and SSR

Electromagnetic Relays – NO – Normally Open – when the relay is not energized or activated, this terminal is open-circuit. NC – Normally Closed – when the relay is not energized or activated, this terminal is closed circuit. COM – The Common Center Terminal in relays. This is the center terminal that closes circuit with NC-NO. The terminals are potential free and floating and are insulated from the control signals or coil windings by many kilo volts. Many provide visible isolation. These terms apply to SSR or Big Contacters too. Relays and Contactors Drive SCR thyristor 555 Relay Driver Solid [Read More ....]

 Posted by delabs at 5:59 pm
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