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
Electrical
Electrical Engineering, Control Panels and Alternative Energy.
Mains Power means the 230 V AC 50 Hz or 110 V AC 60 Hz in some countries, The lower power line like 5A is used for small lamps and fans. The higher power line 15A is used to drive the High Power Electrical Appliances like Heaters and Motors. This is a single phase supply. Single phase Supply in layman language means a Live, a Neutral and an optional earth. The earthing is a must in every building along with lightning protection. The Neutral is a close to earth potential, The live can give a shock to a man who [Read More ....]
A ThunderBolt Zap can damage electronic parts. The Earth Leakage Circuit Breaker ELCB or Overload Breaker may Trip. Mains Strip Board should have protection, The EMI RFI filter, Varistors can help. Earthing and Lightning Arrestors should be good in the building. Power strip – Wikipedia, the free encyclopedia Line-Filter Case Study: by Georgerian and Duffy Achieving EMC for Dc-Dc Convertors ElectronicsWeekly.com – Safety first SMPS switch mode power supply design, PSpice simulation
Just like rackmounts hold big instruments or computers, control panels small or big have to hold DIN Instruments, switches and annunciators to make it easy for the operator. The maintenance work also is simple from the backside. It can be kept near the machinery which it controls. Some Control panels go into Control Rooms at a distance away or at a greater height from the shop floor. This way they can monitor and give instructions while managing a larger process like processing of chemicals and at the same time safeguarding the instrumentation and computers with controlled environments. Some of the [Read More ....]
Oct 082008
Electrical Engineering encompasses Everything in Electronics. Communications, Computers etc. are further specializations of Electronics. So it is best to Identify Electrical Circuits with Electrical Designs which excludes Active Devices. It can include Electronic Products in the form of wireable modules. So House and Factory wiring, Appliances like Ovens, Toasters, Power Generation and management; all these are electrical. Motors, Generators, Connectors, Relays, Contacters and Circuit Breakers are Electrical Components. A Radio or Power Inverter is Electronic. When an Inverter or Electronic AC-DC Motor Drive is used in a Control panel or Power Supply system, that integration is shown as an Electrical [Read More ....]
Technology Resource – Silicon Sam Samuel M. Goldwasser’s latest and most fabulous “Notes on the Troubleshooting and Repair of…” series of comprehensive repair guides for consumer electronic equipment and other household devices. Detailed diagnostic and repair procedures are provided for: small electrical appliances, audio equipment, TVs, VCRs, CD players, computer monitors, microwave ovens, even lawn mowers – and much much more! 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 [Read More ....]
This was a Heater which was custom built for a CRT manufacturer, It comprised of many Tubular finned heaters. And probably a big fan that worked at high temperatures. This was used in a Heating Chamber which aged or tested CRT monitors. It had a temperature controller, a remote indicator. Learn about CRT here Cathode-Ray Tube .
Sep 272008
Switches are electromechanical devices. The are used to control the path of current or energy flow. Power switches are used to turn on and off loads. The contacts should be robust and have immunity to sparking and corrosion. Switches for signals need to be gold plated for low contact resistance and within a sealed enclosure. Illuminated Rocker Small Rocker Toggle SPDT Toggle DPDT Tact Big Tact Small DPST 230V AC 10A Neon DPST 230V AC 5A Neon SPDT Low Power 1A 50V AC-DC DPDT Low Power 1A 50V AC-DC Push NO Data, 0.1A 25V Push NO Data, 0.05A 12V DPDT [Read More ....]
This is a Multi Zone Temperature Control panel used in Plastic Extrusion Moulding. We made many of these and it helped us learn cable management techniques. The panel is a standard way it was built and some of the merits were the selection of panel components and wiring expertise.
