Category Archives: Tech News

How Do Magnetic Stirrers Work?

Just about any well-equipped laboratory, these days should have magnetic stirrers on hand. Magnetic stirrers are easy to use, affordable, and allow for consistent mixing and dispersion. Perhaps best of all, you can set up magnetic stirrers and ensure that substances continue to mix even as you move on to other tasks.

Show magnetic stirrers to a young child, and he or she might think it’s magic. While technology often does seem magical, magnetic stirrers aren’t particularly mystic. These stirrers use rotating magnetic fields to spin a stir bar that’s been placed in your beaker or another container. As the stir bar spins, it’ll mix up the liquids.

If you’re going to use a magnetic stirrer, you’ll typically need a power source. That may include batteries, a simple plug, or whatever else. Electric motors are normally used to rotate the magnet fields (often simply by moving the magnets) thus spinning the stir bar.

Magnetic stirrers generally work best with smaller amounts of liquid (4 liters or less). While magnetic stirrers are very effective and easy to use, there are some limitations. The center of your solution, for example, will often be very well mixed. The top and outside of your solution may not be.

Particularly thick, or viscous, materials also won’t mix well with magnetic stirring. Thin, watery substances, on the other hand, are often very easy to mix with magnetic stirrers.

In some cases, you can use different stir bars to improve mixing. One stir bar may work better with a solution than another. Fortunately, science and chemistry supply companies often sell a variety of stirrers. This way, you can select the one that works best for you.

Magnetic stirring devices often come with hotplates and other features too, making them multi-faceted tools that are useful for a range of applications.

5 Things To Consider When Using Power Combiners

If you work with RF, microwave or wireless technology, you are probably familiar with both combiners and dividers. They are useful in either splitting signal or combining to amplify a signal. Combiners can link radio signals together or separate them depending on what you want to accomplish.

Power Combiners

1: Most Combiners Are Also Dividers

The first thing that you have to remember when working with high power combiners is that they are the same thing as high power dividers, reversed. A combiner becomes a divider when they are hooked when the input is used as an output. Most are universal.

2: Consider Your Bandwidth

In most cases, a narrow bandwidth does not matter. You can use combiners to increase your bandwidth if necessary, but unless it is done properly, you can cause the signal to degrade in a way that makes a wider bandwidth useless. You should note that some combiner configurations can extend bandwidth, but it may not be necessary for your application.

3: Pay Attention to Efficiency

It doesn’t do any good to combine or divide power inputs and output if you have signal or power degradation. Too many links often equal a loss of power. If you are losing too much power, your signal may not be strong enough once it reaches its destination.

4: Consider Size

It might seem obvious, but you have to consider the size of the unit you are working with. If the size does not matter, you can use a combiner with stripline instead of the much smaller radial design. 

5: Noise Isolation 

This is not the kind of noise most people worry about. Isolation is extremely important because it can also cause a signal to degrade no matter how your combine it. You do not want signal crossover from each component.

To combine or divide a signal, you have to consider each of these five things. If you don’t, you subject the system to what is at best a degraded signal and at worst complete signal loss.

How Ultrasonic Waves Can Be Used for Welding

Ultrasonic waves are sound waves above the limit of human hearing and can be put to practical use in manufacturing everything from car computers to medical equipment. This is because these vibrations cause plastics and thin layers of metals to melt in predictable and controllable ways which can be channeled into a weld. The equipment and process for ultrasonic welding are highly specialized, easily adapted for automation and provide quality welds.

Ultrasonic Waves


To use this type of welding, you will need some basic equipment such as Dukane ultrasonic converters, boosters, horns, and anvils or fixtures to hold the items being welded together. You will also need a power supply and a way to apply pressure to the pieces. The type of fixture and pressure will largely depend on which materials you are using and the sizes of each piece. Those same factors will change the way your computer or microprocessor configures the frequency, temperature and pressure of this process as well as the timing and how the waves are directed.


The process of ultrasonic welding can be boiled down to some basic steps. The parts to be welded are placed on the fixture and the horn contacts the materials. Pressure is applied to keep the horn and parts in place, usually air pressure from a pneumatic arm. The horn then emits sound waves either up-and-down or side-to-side for the length of time dictated by the materials being used. Once the weld is set, the horn and materials can be removed. For metals, the sound waves are applied parallel to the plane of the materials, and the metal is heated but not melted. This removes films and metal oxides from the surface and allows the molecules to flow between parts to form the bond. Plastics, on the other hand, have ultrasonic waves applied perpendicular to the plane of the materials to melt and fuse the parts together.

Ultrasonic welding harnesses the vibrations of sounds above the limit of human hearing to bond plastics and metals together. Manufacturers use this type of welding to make electronic components, medical equipment, and even shoes or toys.

Tips for Working From Home

With the spread of coronavirus and most of the country on lockdown, more people than ever are transitioning to working from home full time. Working from home is convenient, but it can prevent its own challenges. Here are a few tips to help you stay productive at home. 

Tips for Working From Home

Stick to Routine

One of the best ways to help your productivity at home is to maintain regular working hours. Having a routine will help you be more productive during work hours, and help you get the proper break you need after work. Stick to your schedule and don’t let personal life interrupt.

Know Where to Get Help

Being away from the work environment might create a sense of isolation, which is exacerbated when you don’t know who to ask for help with day-to-day issues. Know which of your bosses or coworkers you can email and get a quick response from. You also might need help with IT issues, like a slow internet connection or Macbook repair Odessa TX. Make sure you have a support system in place that will respond quickly and get you the help you need. 

Schedule Breaks

Working from home makes it even easier to work through lunch or other breaks. While that might seem more efficient, in the long run, it can cause you to burn out. Be strict with yourself and take 15-minute breaks throughout the day, as well as a long lunch away from your computer. 

Get Out of the House

When you are at home all day with no reason to leave, it is easy to forget to get out of the house. Even if you don’t have anywhere to go, try to at least go on a short walk every day. The fresh air will help your mind and body, and light exercise will help your mental health. Even just a short walk to the mailbox can significantly improve the way you feel.

Cloud Hosting vs. Dedicated Hosting – Which Should I Opt For?

This is, perhaps, the most common and constant conundrum that site owners experience. On the one hand, they have their website needs, which can sometimes be highly dynamic. On the other hand, they have so many options in the market available, that it can get overwhelming. With more factors like budget, security, manageability, etc. added to this equation, it makes it even tougher to choose. So, what do you do when you are about to launch a site and cannot decide what kind of hosting you need or want, or go with? Dedicated hosting or Cloud Hosting?

Let us help you get a clearer picture.

Dedicated Hosting          

As the name suggests, it is dedicated to you and your website alone. It is hosted on a physical system, and every resource needed to keep it running is dedicated to and for the same. Since this is your private server, you have complete root access. This allows you full control of its functions and customizes the way you manage it. You can change the configuration, add or remove applications and programs, increase security, expand hardware, or anything that you think you should do to enhance the server performance.

However, there are a few drawbacks of a dedicated server. Since every piece of asset is used by you, you will need to invest for the entire package, leading to high upfront costs, which will also include hiring tech experts and webmasters to monitor and manage the servers.

Secondly, when you need to add resources to your dedicated server, it can take up more time and longer processes. This can often lead to slow site loading or downtime, during high traffic times.

Finally, with dedicated hosting, since the entire environment is dependent on a physical environment, you always have the risk of a single point failure.

Cloud Hosting

Moving away from dedicated servers, cloud hosting is a world apart. There’s nothing singular in the cloud. The website is hosted across multiple servers, each taking care of a certain function or asset of the server. Thus everything from CPU, RAM, storage, bandwidth, and the OS is distributed across multiple destinations. This system of virtualization makes cloud hosting unique and efficient too.

Cloud hosting prides in its best feature of scalability- both cost and resource-wise. It runs on a pay-as-you-go model, where your hosting plan is no different than your mobile service plan. You pay for the usage and nothing more. If ever you need to use more resources, you can instantly do so, thus saving your site from any downtime or slow speed issue.

Some of the other highlights of cloud hosting are – 99.99% uptime assurance, state-of-the-art data centre, self-healing storage architecture like Ceph, 24×7 support, etc.

 However, there is one aspect of cloud hosting, which many people find a downside, and that is your control on the server. Although you have free access to the control panel, which you can use for daily management task, you cannot access the root.

Summing up…

As we see, there is no right or wrong about each of these hosting solutions. Each has its pros and cons. The decision will ultimately reside on you and what your website needs, wants, and demands. If you are okay to spend more but want to keep your server private, then dedicated hosting is what you are looking for. On the other hand, if you have a limited budget but want to do more than just hosting, then you should buy cloud hosting

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