Basic Electronics and Tutorials

Battery and Energy Management

Posted by on Apr 06, 2016 in Battery-Management

Using Rechargeable Battery is Environment Friendly. The 1.5V and 9V are more popular in small devices and flashlights and can create more E-Waste. So rechargeable better is it not?

battery-types

There is also a 4.5V Battery or Cell. This is not so popular, it is bigger too. It packs more punch or current, i used it to flash mini Magnesium bulbs. Luckily i did not hurt my eyes in this fascination. Many cells form a battery, but in Normal Spoken English, both mean same. A cell is a single unit of cathode-anode-electrolyte. Things you ought to know

Never Short Circuit a Battery, Fire hazard, Chemical Spill.Keep the Terminals of Battery and Gadget clean, Shiny.

Guard it - Dust, Grime, Rust, Liquids & small metal objects.
Storage - Never keep in a Metal Box or Can or Metal Safe.
Use Rechargeable Batteries, that is good for the Planet Earth.
Do not leave dead batteries in Device and forget it for days.
Keep away from Heat, Direct Sunlight and High Humidity.
Unless allowed, do not keep a charger always linked to Device.
Do not Stock or build Inventory of Batteries, buy on demand.

Related Posts

Still more Reading

Electropaedia - Energy Sources and Energy Storage, Battery and Energy Encyclopaedia and History of Technology

This Website has Sufficient Data on Alternative Energy (electrical). Energy Conversion and Management and most important ... Batteries. Batteries are a bit expensive, they have a long life. If care is taken, they can last long. Any Energy Harvesting needs a Battery as an Electrical Flywheel. SuperCaps too act as buffers or large reservoirs.

Electric power generation and energy supply technologies.

Energy from Fossil Fuels
Energy from Biofuels
Solar Energy
Wind Energy
Nuclear Energy

RCA connector or Phono Connector

Posted by on Apr 06, 2016 in Audio-AV, Switches-Relays-Connectors

An RCA connector, sometimes called a phono connector or cinch connector, is a type of electrical connector commonly used to carry audio and video signals. The connectors are also sometimes casually referred to as A/V jacks.

The name "RCA" derives from the Radio Corporation of America, which introduced the design by the early 1940s for internal connection of the pickup to the chassis in home radio-phonograph consoles. It was originally a low-cost, simple design, intended only for mating and disconnection when servicing the console. Refinement came with later designs, although they remained compatible.

Electric double layer capacitor an eFlywheel

Posted by on Mar 10, 2016 in Battery-Management, capacitors

The Electric double layer capacitor has the main use of a Charge Reservoir. That means a large amount of electrical charge in a small footprint.

These charge/discharge quickly unlike the battery, There is no Electrical Energy to Chemical Energy Transformation and back, like in batteries. It may need caution in design and usage as they may carry a lot of punch.

xelled

Also known as Ultracap, Goldcap, Supercap - Electric double layer capacitor, In Farads, like batteries, Energy Reservoirs or eFlywheel.

In Product Safety terms; The Battery has a Internal Resistance, but a Supercap does not. When used in Values like 100F and is fully charged, an Internal or External Breakdown of Insulation or Short Circuit may Occur. The Heat Generated is Enormous. Murphy's Law says such things happen..

Supercap at Wikipedia

Electric Double Layer Capacitor (EDLC) or SuperCapacitor

DLCAP - Electric Double Layer Capacitor - Nippon

They have a range of Supercapacitors upto 2500F at 2.5V and Modules like 400F and 15V. There are two types Prismatic and Cylindrical. In comparison to batteries - multi-million cycles of charge-discharge is possible.

EverCAP - Double Layer Capacitors - Nichicon

They have two types, High Power Density for a large current discharge. High Energy Density for a long backup time. Over a million Charge/Discharge cycles. High Efficiency. Capable of fully discharging to zero volts.

Some things to note for a design engineer. The EDLC or Electric Double Layer Capacitors ...

Specified Endurance and end of life.
Excess Vibration can alter Specs.
Caution - The maximum temperature.
Specs are dependent on Temperature.
Maintain Low ripple current on Charge/Discharge.
It is Polarized like a Electrolytic cap.
Not Hot parts or Heatsink near cap.

The Double Layer Capacitors developed by WIMA are storage capacitors with highest capacitance values in the Farad range.

GTO Capacitors - WIMA

They are among others suited to serve as batteries, can deliver considerably higher currents for a short time, however, and are maintenance free.

SuperCapacitors - WIMA - These EDLC supercap has one-tenth of energy, but delivers over 10 times of power due to ultra low ESR. In Comparison with a Battery. A Lifetime of over 500,000 cycles.

Xelled Supercapacitor - Vinatech

Some Specs

Rating 2.5V / 2.7V
High power density (low internal resistance)
High electrical current, instant power back-up applied

Science a Foundation for Technology

Posted by on Mar 08, 2016 in Science

These books Electricity and Magnetism, Optics and The Modern Revolution in Physics are very useful for any student of electronics. To have sound science foundation, Physics and Chemistry are very important for an Electrical/Electronics Student.

Light and Matter: open-source physics textbooks

Biology and Environment learning is important for the Analytical and Medical Equipment designer. Chemistry is important for the study of materials which enable us to make new components and semiconductors. Maths cannot be ignored, it needs no special mention. Numbers are everywhere, this is the most important part of science.

delabs notes

science-technology

Electricity and Magnetism Optics The Modern Revolution in Physics

Electricity Posters - Education - National Physical Laboratory

Our Nervous System works on a Electrochemical Electricity. Brain is an Organic Chemical Computer. The Thunderbolt is just an overgrown electric spark. You know the shocking facts about the electric eel. Underwater creatures can illuminate themselves, could be like OLED.

All your Home and Office runs on electrons. Electric cars are already a reality. This page will charge you with Electrical Facts you ought to know. See the electric eel too.

delabs Notes

WikiCiencia - Science and Tech Portal

Devoted to electronics and computing. Featured articles

Control Systems - What are the control systems, Types of automation. Solar Cells - Photovoltaic or photoelectric cells. Operation of semiconductor PN junction.

Includes collaborative wiki on subjects like Semiconductors, Communications, Electricity.

Wandel and Goltermann - Communication Instruments

Posted by on Feb 17, 2016 in Test-Measurement

Just like Rohde and Schwarz which is a world leader in Communications Test Equipment, There was another from Germany called Wandel and Goltermann which made specialized RF Test Instruments.