To solve the charge management system
We have referred the factors to affect the battery charging. These are Input source, Output voltage regulation, Method of charging is completed and Battery temperature monitoring. Taking all these factors into account, we can develop an appropriate charge management system.
Linear solution, when the input source voltage is good, you can use the linear charging solutions. For example, Microchip’s MCP738xx linear battery charger series is a linear charging solution. In these applications, the linear solution provides many advantages, such as easy to use, small size and low cost.
Switch mode charging solutions, for a wide input voltage range, such as non-regulated AC-DC wall adapter, car DC input or a universal car adapter. Switching regulator battery charger can be reduced within a reasonable level of power loss.
Select the topology, switching regulator topology determines the switching regulator and passive filter components of the composition. The difference of this constitutes is following the choice of topology changes. And need to balance in the complexity, efficiency, noise and the trade-off between output voltage ranges. Power converter topologies have a lot. But only a few are for 5W ~ 50W range of battery chargers.
Buck regulator, buck regulator is a commonly used battery charging application topology. Buck regulator has the following advantages and disadvantages.
Disadvantages:
First, Integrated buck regulator diode in the MOSFET switch the input voltage will not constitute a battery discharge path. Require an additional blocking diode. Additional devices also cause the system to be additional pressure drop.
Second, buck regulator input current is pulsed, or intermittent. In this topology produces a high power input electromagnetic interference (EMI). Most regulators have a need for additional input EMI filter.
Third, step-down regulator can only compare the input voltage and low output voltage regulator. Some applications of the input voltage range, to cover the required output voltage range. For the multi-cell lithium ion battery cells charge the battery pack consisting of the application, this is very common.
Fourth, step-down switch short-circuit fault occurs when the short circuit between the input to the battery. Batteries do not have the internal protection of nickel-hydrogen batteries. It will lead to security problems.
Fifth, Buck regulators require high-end drive (for N-channel MOSFET switch), compared with the low-end topology, which will lead to the greater complexity.
Sixth, Pulse Width Modulation (PWM) controller applications external switch current sensing is more complex. For short-circuit or load short circuit failure mode, the switch current limit is very important. There is no high-speed switch current limit capability. The battery charger in the event of short circuit can be damaged.
The advantages are low complexity, single-inductor structure. For synchronous applications, the conversion efficiency is up to 90%. If you are considering whether it is suitable for your car, I recommend the universal car adapter to you. It is more convenient to carry.
Home Interior Color Guide
Color can make your whole house seem thoughtful, well-planned and organized. Here’s an interior color guide to help you find the right palette. I admit there are no hard-and-fast rules. The color choices are personal so start with color which you love and which you won’t mind seeing daily.
Besides painting the wall, you can also introduce color into your home via home interior fabric, wallpaper and rugs. One rule I like to recommend is to stick with neutral tones for parts of your interior which are large and permanent e.g. sofa and cabinets. The bright hues are usually reserved for accent pieces like towels, pillow cases or even pottery.
Here’re some questions you may want to ask when deciding on the right interior color:
o What’s your favorite color? What’s the first color you pick out from a box of crayon
o How do you react to color? Do the warm yellow and orange of sunset move you?
o What color are the clothes in your closet? Do you tend to pick our colorful pieces or stick with the neutral ones?
o How big is the space? Do you want it to feel cozier or feel larger?
o Do you like to unify your rooms in the same color?
o How do you want to feel in the room? Relaxed and calm or dynamic and energetic?
o How much available light is there?
o Is there a view in the room? Do you want to incorporate this into your interior?
With the above, I hope you can enlist the familiarity of these everyday objects into a relaxed and meaningful color scheme.
Home Interior Design Idea – Simple Yet Effective Home Design Idea!
The latest trend in home interior design is the use of themes. Theme ideas range from sports to fabulously feminine and contemporary to eclectic. One of the most popular themes is the “Tropical Island” theme.
When using the Tropical Island theme idea, there are many directions you can go. From elegant to fun, you have a wide range of choices. You can use art work, painted murals, wall paper, textured wall paint or any combination of these materials.
Select colors that represent the tropics such as various shades of blue, dark turquoise and deep shades of green. Burlap fabric is a good choice for wall covering. For an inexpensive Tiki look, attach bamboo shades to the wall, than attach a chair rail above the shade using bamboo shafts.
Tropical plants are a must-have for the Tropical Island theme. You can use live or silk plants or sculptures of trees. Some craft and hobby stores have fake palm trees with strands of lights attached to them. Fake palm trees are fun and festive and provide a small amount of additional lighting.
Window treatments should be light and airy. Bamboo shades are a logical choice for this home interior design. Other options include brightly colored sheers or draperies made from bright, sheer fabric or an island print.
A wide range of art work is available to create any style of Tropical Island design. You might want pictures of sugar plantations or pineapple fields. Maybe you prefer oil paintings of cargo ships or fancy yachts. Perhaps your tastes are more suited for seagulls, pelicans, dolphins, turtles or other sea life. Regardless of art preferences, there is an abundance of art work depicting the beauty of the islands.
The Tropical Island home interior design can be used in nearly every room. It makes for an inviting living or family room, as it is bright and cheerful, yet relaxing. It is a calming theme for use in a bedroom and can easily be adapted for children or a nursery. Many children enjoy being surrounded by pictures of sea life and are calmed by the soothing colors.
Bathrooms are a natural setting for the Tropical Island theme. Accessories can easily be located in most retail and department stores. You can find everything from toothbrush holders to wall paper in a variety of island designs. A popular trend in bathroom designs is the use of glass bowl sinks. These are perfect for the Tropical Island theme and add exquisite beauty to the room.
Kitchens lend well to the Tropical Island theme. Bamboo kitchen tables and bar stools are quite popular. Another option is to use a picnic table or outdoor table with an umbrella. You could even go so far as to use a Tiki hut design umbrella to bring in the tropical island feeling in your dining room.
Laundry rooms and storage areas are usually boring areas within the home. Add a splash of tropical color or use a tropical island print wall paper border to breathe some life into a dull and boring space. Use wicker baskets painted in bright colors such as turquoise, orange or yellow, or paint shelves or walls in tropical shades.
The Tropical Island theme works well in the home office setting. It is inviting and friendly to guests and provides an uplifting environment in which to work. Use a variety of lush tropical plants and an aquarium or water fountain. Paint your office furniture white and add a tropical design for a fun and festive look.
Grab some home interior design magazines and catalogs and let your imagination go wild. Cut out photos of items you like and tape them to a piece of paper or foam board. Create a floor plan to help you determine what items you have room for, then go shopping.
Look for deals at your local thrift shop or visit yard or estate sales. You might be surprised at the great bargains available and you’ll probably find several unique accessories. Most importantly have fun and get creative with this home interior design idea and soon your tropical oasis will await you!
Copyright Shrinivas Vaidya