When to Use the HV AC Test


Voltage, which is also called electromotive force (referring to the characteristic movement of electrons to produce a charge), is an expression of electric potential difference of the charge amongst point A and point b in an electric field. It is expressed in volts.

Electrical current, on the other hand, is the quantity and flow of charge carriers through a set point for a certain unit of time.

The two aforementioned terms are directly proportional to each other. This means that as the voltage increases, so does the flow of electrical current.

The Two Types of Voltage

Voltage can either be alternating (AC) or direct (DC). The former has a sporadically reversing direction of polarity, which is most commonly manifested in utility outlets. Conversely, the latter assumes a constant polarity, which can be found in electrochemical cells like batteries.

When to Use the HV AC Test

Voltage is measured with the use of 2 probes that connect one point to the other:

  • Ground probe – This is usually tinted black and is connected to the negatively charged polarity.
    • Positive probe – It is red in color and, as the name suggests, it

Where to Install Your Hidden Camera in the Home


Many people nowadays are opting to add extra security to their home in the form of hidden nanny cams and mini security cameras. These devices can be extremely useful in not only monitoring events in the property, but also making sure that valuables are more protected; this can be especially of use in a place with a great deal of expensive belongings or a lot of hired help.

One thing that people struggle with is where to hide their hidden security camera so that it picks up good footage of whatever they are filming but also remains discrete and undetectable. Here are some of our top tips on where to place these devices for best results and maximum protection.

A hidden security camera can be used in any room in the home, although care should be taken in place such as kitchens and bathrooms where there are a lot of water fittings and plumbing that could potentially cause damage to the equipment. Apart from taking care in these instances, however, there is a vast range of choice of locations to select from.

One of the top choices for

Hidden Security Camera Systems Help to Deter or Catch Criminals


When someone owns any type of property, they want to make sure that they are keeping it secure. This is something that is going to be extremely important. Hidden security camera systems are going to record all of these things so that they are able to see what is going on even if they are not in that area.

These can be used primarily for after hours when there is nobody at a business. These could also be used during the day when people are at work and nobody is at home. Sometimes, they are used while a store is open also.

Every system is going to be used differently. It is very important that it is used effectively though. The cameras need to be placed strategically so that the areas can be seen that need to be. Catching these criminals in the act is going to be extremely important.

When the cameras are hidden, it is more likely that people are going to steal or vandalize something. If there is a camera that is noticeable, they are going to do everything in their power to avoid them.

How an AC Voltage Generator Works

Generators are important appliances for supplying electrical power when power outages occur. It provides continuity of regular activities or business operations during such times. They come in varying physical and electrical configurations to suit diverse applications and are vital as secondary sources of electricity in both industrial and residential settings.
Work Principle of an AC Voltage Generator
An electric generator converts mechanical energy that is obtained from external source into electrical energy output. In essence, a generator does not aDcreate’ electrical energy. Rather, the system utilizes its supply of mechanical energy for forcing movement of electrical charges within the wiring of its windings via an external electric circuit. The flow of electric charges comprises of output electric current which the generator supplies. It is easy to grasp this mechanism by likening the generator to a water pump that only allows water to flow through, but does not in reality aDcreate’ it.
The AC voltage generator of modern day functions on the basis of electromagnetic induction principle, a discovery of Michael Faraday made between 1831 and 1832. Faraday discovered that one could induce the flow of electric charge described above by moving electrical conductor like a wire containing electric charges within

Testing Transformer Based Wall Warts Using the AC Voltage Test

AC adaptors are a variety of nonelectric tools that serve as external power supplies for electrical devices that cannot obtain power from main power as they lack the internal components to do so. The wall wart, in particular, is a subtype of AC adaptors that is used specifically for game consoles.

External power supplies possess a similar circuitry to the one used in built-in supplies. Their external covering is similar to that of AC plugs.

Purpose of the AC Voltage Test

This is a commonly used test that allows one to determine the functionality of electrical devices. This is inclusive of, but not limited to, the power supply, the signals that travel to and from chips, and the capability of resisting overvoltage.

Performing the Test on Wall Warts

Tests usually consist of a combination of both AC and DC voltages. Do make sure to use the right mode for each; both of which are represented by a ‘V,’ but the AC is followed by a wave whereas the DC is followed by two horizontal lines, where the top is solid and the bottom line is dashed.

Testing wall warts, in particular, is helpful in building circuits, among other things. There are a variety of ways to

Tips Buying Wholesale Electronics

Electronic gadgets and items are always in the market. There are willing buyers everyday depending on what you have to offer them. If you run an electronic business, you know the importance of offering reasonable prices to your customers. This means you need to also come up with ways through which you can get the gadgets at fair prices enough to make your retail prices good and make you a profit at the same time. The success of the business relies on the quality of your electronics, the prices and the profit margins.

Fortunately, you can enjoy great business success by buying your electronics wholesale. Through wholesale, you stand the chance to enjoy huge discounts on your purchases. This means you can get more items for less and get the chance to offer your items at reasonable retail prices and still make profits. Wholesale buying also saves you on shipping as well as handling costs since your items are delivered in bulk.

How to Buy Electronics at Wholesale

There are hundreds of suppliers when it comes to electronics. This makes it important to choose the right source for the items you need so you can enjoy high quality and good prices too.

How to Choose the Perfect Bluetooth Sport Headphones

There’s nothing that makes a workout quicker and less painful than being able to listen to your favourite tunes while on the go. Traditional headphones, however, can often prove quite bulky and even bothersome with cords getting in the way of your movements.

For all sport junkies, a much more convenient option now exists in Bluetooth sport headphones. With no tangles and fewer bits and pieces to get in your way, you can fully concentrate on enjoying your music and giving the most to your workout. Here are a few helpful tips to bear in mind before buying a pair.

The first thing that you’ll want to consider when purchasing Bluetooth sport headphones is the sound quality. Whether you’re using your smartphone or your iPad, a great quality of sound is essential to you being able to enjoy your music properly. If you are using your phone, you may also want to make sure that quality is good enough for smooth, problem-free voice calls too.

To ensure that your purchase has great sound quality, be sure to carefully check the specifications of a product before purchasing and, if possible, check out customer reviews. Both of these will give you real insight into what

Digital Signage Solutions Give Your Showroom Sales an Effectual Boost

In most of the businesses, you will find application of digital signage in some way or another. In fact, at retail stores and showrooms; they are widely used encompassing a wide array of electronics displays. There are manifold ways to use them for your showroom in order to inform visitors about your products. Digital signage solutions promote products or services available in your showroom. It has ability of enhancing expectations in advertising for retail sector. With its fast growing speed and easy accessibility, it is now possible to grow your business alongside increasing sales.

Ways to use digital signage solutions

Focus of any business investing in digital signage solutions is to bring in additional revenue for further expansion of business. This technology plays an important role to educate customers regarding numerous options available in your showroom comprising any latest offer or scheme. Besides, you upselling will accommodate you in interactive screen kiosk advertising campaign. It provides information to customers about items that are of high price or simply bundle them together in form of attractive offers.

World class design and presentation

Informing people in a convincing and attractive manner is necessary as it brings customer attention and interacts with them efficiently. A

How To Buy A Good Wireless Microphone

Are you going to buy a wireless microphone? Are you familiar with the features of a great wireless microphone? Do you know the factors that should be kept in mind when buying one? If you want to find out the answers to these questions, you may want to read this article.

Uses And Frequencies Of Wireless Microphones

Cordless microphones are a great choice if you are going to give a speech in front of a huge crowd. Microphones amplify the speaker’s voice so that the audience could hear it with ease.

Generally, these microphones use VHF, UHF or Gigahertz frequency. UHF is the most frequently used frequency. If you are looking for a general-purpose microphone, you may want to go for a VHF one.

Types And Shapes

These microphones come in a variety of shapes, and you can go for a microphone with a certain shape based on your needs. For instance, you can buy a hand-held microphone if you are going to sing a song in front of an audience. But you can also invest in a karaoke microphone, especially if you are into Japanese products.

However, if reliability and flexibility matters a lot to you, then you should buy a handheld microphone.

What You Should Remember When Buying Portable Bluetooth Speakers

Either for work or recreation, you can find that portable speaker systems are handy to use. You can listen to a presentation by yourself or liven up your house party. However, since music is better enjoyed with a bunch of friends, a Bluetooth speaker can be your ultimate pal in making boring days become extraordinary. But picking the right kind of speaker is never easy. Because of the different brands and features being shown in the market, you will have a hard time picking the right one that suits your personality and style in music.

Things to Consider

There are some things that you need to consider when choosing a Bluetooth speaker. Here are some of them.

  • Compatibility. If you are a mobile phone, laptop, or tablet user, you will need to know whether the speaker that you are thinking of buying is compatible with your gadgets. It is very important to make sure that your speakers can be used with different devices before buying it.
  • Features offered. You may see that some of the best Bluetooth speakers being sold in the market have additional features like alarm clock, docking bay, additional connection capabilities, and built-
    in mic for hands free calls. It is

Pros and Cons of A Fake Security Camera

Security is one of the most important things that any homeowner or business owner should prioritize.

Since crime is constantly on the rise these days, you must remember to protect your office or home from theft or robbers. A burglar alarm system is a good way to protect your properties, but you must also add a security camera for a higher sense of security and safety and also for more protection.

However, for those people who are on a tight budget, you might just be thinking of installing some fake security cameras for security around your home or office. There are many people who are using this type of camera and enjoy great results; but there are some who think otherwise.

For those who are open for this type of camera, you still need to consider several things before making your decision. Researching about fake security cameras can help you making the right decision of opting for this kind of protection than the real one.

What is a Fake Security Camera?

A fake security camera is device that is carefully designed to look like a real one. Tons of different models are being sold in different stores, which gives you variety as according to what

The Wireless Hidden Camera Is Used in More Places

When somebody is worried about what is going on in a certain place, they are going to want to find a way to keep track of that area without being there every second of their day. A wireless hidden camera may be what they need to install in those locations. These are becoming more commonly used in businesses and in homes.
They can be remotely accessed from many different locations too. This is something that is going to be extremely important for many of the locations. Every camera will be mounted in a different location too. Sometimes, it is as simple as setting it down on top of something where the item will look normal and not be bothered.
This is going to be extremely important to consider when people are choosing the camera. It has to be able to get a good picture. Without this, it is not going to do any good to have it.
It is important to have a clear situation of what is going on. Every possibility is going to vary based on the location of the camera and how much it will be used. There are some of these that are disguised as different

Eco Friendly Power With Innovative Diesel Electric Generators

Advancements in reducing emissions and noise output as well as improving fuel and cooling efficiencies are transforming these into state of the art eco-friendly powerhouses. LCD display control allows easy access to the generator’s main function and provides for easy operation and monitoring of its functions.

Providing Temporary Electric Power

Having an alternative power source is vital in many situations. Generators are proven to be reliable in providing emergency power in commercial, industrial and residential applications. Power outages interrupt cost-sensitive operations and may also affect outcomes in critical life support situations.

Low Noise Diesel Electric Generators

Traditionally, diesel electric generators are noisy largely because of the diesel combustion process. In the past, it had to be positioned at some distance from sensitive areas to reduce noise levels. Today’s generators are mechanically improved to significantly reduce noise as well as engine efficiency. Its housings are also structurally designed to reduce noise output.

Saving Energy

Diesel Electric Generators can typically convert over 45% of the fuel it uses into mechanical energy. The fuel efficiency of a diesel engine is almost constant and these generators emit less heat waste in exhaust and cooling. Energy saving electric propulsion leads to better performance and energy savings. In constant development as

4 Essentials of a Qualified Television Technician

Television is an electronic appliance that one would find in every household. It serves as an entertainment option where one can watch varied channels for varieties such as news, educational shows, movies, etc. Modern equipments are of varied types such as LCDs and LEDs that provide high definition picture quality as well as vibrant colors to what one watches. There are times when due to faults in the electrical connections and internal issues, the appliance tends to not function and thus breaking down.

As it is an electrical appliance made after assembling varied parts, there are chances of it getting repaired and restored. Repairing a damaged appliance is better and cheaper than purchasing a new one. Before repairing it, one should make sure it should only be handled by experts as there are chances of it getting damaged further when touched by an amateur. A good repairing authority should have the following characteristics –

  • Professional – It being an expensive electrical appliance is something that should be taken special care of while getting it repaired. The one who is hired for repair should have the necessary knowledge in handling the appliance and the way it should be restored. After checking the necessary

Choosing the Right Colour Temperature for Light Fixtures

There are several factors to consider when installing the right lighting in your home, including whether to opt for an advanced and energy saving G4 LED capsule technology or a more conventional halogen bulb, which style of lamp to buy and which colour temperature to opt for.

Getting the colour temperature right is a big concern, as many of us have had that experience where we think we have bought the right product for our home, then once it is installed we have found that it is far from what we expected. Here are some tips on choosing the right colour temperature of bulb in order to meet your needs and tastes.

The first thing to remember is that colour temperature often comes down to personal choice. Warm white colours are general very easy on the eye and, as the name suggests, create a warmer ambience in the home. For this reason, warm shades are generally a preferred choice in domestic properties.

There are various shades of warm whites on the market, including Very Warm White, Warm White and White – the latter being a much more neutral choice. Traditional filament bulbs generally emit the Very Warm White tone of light, which is

How to Plan Energy Efficient and Practical Kitchen Lighting

When it comes to designing your kitchen space, it is sure that there are several elements that you want to include in your creation, including practicality and energy efficiency. On top of this, it is important that your lighting solutions are also aesthetically pleasing, especially since you may be spending a considerable amount of time in this space.

It is first of all worth noting that perhaps the best lighting solutions for your kitchen are LED ones, as this is a technology that may require a little expenditure upfront, but will pay itself back a hundred times over throughout the many years that you and your family will use your home.

Whether you opt for LED GU10 bulbs or MR16 lamps, one thing is for sure: you can save a great deal of money on your energy bills if you invest in this lighting solution instead of more conventional lighting options.

It is also worth considering that this lighting option can also be a particularly aesthetically pleasing one; with dimmable LED and CFL on the market today, it is now easier than ever to enjoy high quality and flexible lighting solutions throughout all of your property, and only for a reasonable upfront investment

Your Guide to Purchasing a DSLR Camera

It is the dream of every photographic fiend to own a Digital SLR camera. No doubt, these cameras come with a diverse range of features that helps one to capture the picture perfect moments with a professional touch, if one knows the right techniques. It is impossible to purchase your first Digital SLR without an expert who has a very good idea about photography. In case you do not have any such expert friend, then here is your guide to purchasing a Digital SLR camera.


The price of a Digital SLR varies from low-end to extreme high prices. Set a fixed budget for your camera and then decide which camera would you prefer to buy. Remember, a number of added costs also get added to the original cost of the camera such as lenses, camera bags, filters, memory cards and batteries.


Every camera is used for a specific purpose. Is it for general shooting, travel photography, sports, macro, low-light or for street photography? Take a note of the purpose for which you will use the camera and then approach the dealer to purchase the best camera.


This is the first question to be asked, when you go to purchase a camera. The megapixel

What to Consider When Buying Bluetooth Portable Speakers

The advent of wireless devices has brought numerous benefits to music lovers everywhere. With high quality music now conveniently portable, there is barely a place you can go without taking your favourite tunes with you, from relaxing in the park with family to partying on the beach with friends.

There are several things to bear in mind, however, when choosing your speakers. Careful thought before purchasing can make a huge difference in not only saving you money, but also providing you with that perfect balance of portability, performance and reliability.

When buying a Bluetooth portable speaker set, one of the first things to take into account is the volume of music that the device can produce. Although not everyone needs or wants their speaker to play excessively loud music, the volume needs to be sufficient for songs to be enjoyed by everyone listening.

Usually, a Bluetooth portable speaker set is small in size, meaning that volume is often compromised. It is therefore worth taking into account what is more important to you, sound or size. If portability is a major concern, you may have to lower your volume expectations and vice versa.

You will also need to take into account how efficient your Bluetooth

Guide On Buying Wireless Bluetooth Headphones

Bluetooth wireless headphones are ideal for you if you like listening to your music while on the go. They are also ideal for you if you don’t like the complexities that come with wires.

Bluetooth uses signal compression that reduces the quality of the sound that you hear. While older Bluetooth models had poor quality and slow data transfer rates, modern headphones have a newer technology that greatly improves the sound quality.

Factors To Consider When Buying A Wireless Bluetooth Headphone

Sound quality: the sound quality depends on the quality of headphone that you buy. If you buy a low quality headphone you will definitely receive low quality sound. To be on the safe side you should go for a high quality headphone.

Range: how far can you listen to your radio? To have an easy time you should go for headphones with the longest range.

Battery life: Bluetooth headphones are known for their battery problems. The cool thing is that there are many new models that come with great batteries. To ensure that your battery doesn’t die in the middle of your favourite song you should go for a long lasting battery.

Comfort: how comfortable are the headphones when you wear them? Since you will

Important Considerations When Buying Electronics

Tablets, laptops, mobile phones, and other electronic products – lots of people dream to buy these items in various types and brands. Are you one of them? Probably! Or if not, you might at last have one dream phone or one dream gadget. Have you bought any electronic item? What are your requirements when choosing a certain product to buy? Dear, electronics are somehow pricey (depending on your financial situation), so you should be very careful in choosing which product to buy. Some of these items have become a necessity these days; hence buying the right product has become very crucial as well. Want to learn about important concerns when buying electronics? Here are some tips for you:

  • Check your budget.

Let’s say you need a mobile phone for business purposes. If that’s the case, then you should opt for one that won’t make you exceed your budget. If you’re willing to stretch it, make sure that your other important needs won’t suffer. Or you might want to wait until you save enough money for your dream phone.

  • Opt for reputable manufacturers.

Cheap products are good, but make sure they are made by reputable companies. It helps to pick one that has been in