product resource tutorial

Ling Electronics Shakers, Amplifiers, High-Intensity Sound Transducers

Looking for Ling Electronics shakers, amplifiers, high-intensity sound transducers, or service? You can find them here.

In 2009, Data Physics acquired Ling Electronics from Qualmark. The legendary Ling Electronics products have become the Data Physics “LE” product range – continuing a legacy of quality and performance in environmental vibration testing that you can trust.

Out With The Old, In With The New

Earlier this week we completed the upgrade and replacement of an original Ling amplifier that was powering the very first Ling 540 with a build date of June 1988! Ling started numbering their products at 11 so that no one thought that they got the very first one.

ling electronics replacement

After servicing the DMA 12-12 amp that was powering the Ling 540 shaker for many years, the difficulty in finding replacement parts and the increasing amount of downtime meant that it was time for an upgrade.

Since Data Physics acquired the assets of Ling Electronics in 2008 we were the natural choice to provide a fully compatible IGBT based amplifier that would allow this old Ling to keep on shaking to it original specifications.

While the Ling 540 was still working well, the customer wanted to plan for a future shaker upgrade that could provide a full 3” of stroke, better sine, random and shock performance, better performance at higher frequencies and vastly better energy efficiency.

With this in mind, the amplifier was designed to be fully compatible with the Ling 540 and the current generation Data Physics LE-1316-3 shaker.

Now, when the customer upgrades the shaker, they will not have to buy a new amplifier! This type of strategy provides the ability to keep their current shaker running until they are ready for their new LE-1316-3 shaker and allows the cost of a full shaker upgrade to be spread across different fiscal years budgets.

Ling Electronics - upgrade

Data Physics can build a new amplifier for virtually any Ling shaker while providing a straight-forward and cost-effective upgrade path to a new shaker. Let us know what we can build for you!

How to Select the Right Power Amplifier

Data Physics provides robust, reliable and efficient amplifier products that supply the power used to drive your test system to its limits. When selecting an appropriate amplifier, you need to consider the mass of your shaker’s armature, head expander, device under test and your test performance specifications, as these variables dictate overall power requirements.

When considering what power amplifier is applicable for your testing needs, it’s important to remember Newton’s 2nd Law of Motion…the simple equation:

F=ma, or Force = Mass x Acceleration

Force: is the required force of the shaker for the given acceleration and mass. Vibration systems have different force ratings for Random, Sine, and Shock.

Mass: is the total moving mass including the shaker’s armature. The DUT, fixture, head expander (if applicable) or slip table + drive bar + bearings, and the shaker’s armature all add into the mass.

Acceleration: is given by the profiles to be tested, typically units of g for Sine and Shock, and g rms for Random.

If we think of force as directly proportional to an amplifier’s current output rating, then in general terms, the bigger and heavier the test item, the more power you’ll need to conduct your testing. Additionally, the higher the required test acceleration (g or g rms), the more power you’ll need. In sizing the proper replacement amplifier, it is important to know the system’s operational characteristics to match the best suited solution. Just as force is directly proportional to current, the shaker’s velocity is directly proportional to voltage. The maximum power of the shaker system is usually found right at the velocity to acceleration cross-over point.

Increase Your Shaker’s Performance with SignalForce IGBT Amplifiers

Designed with the Data Physics LE-series shakers in mind, the new LE-DSA15 IGBT amplifiers are based on the same reliable and robust architecture as the LE-DSA10 series units, which have a proven track record of continuous high output operation. The LE-DSA15 amplifiers are rated for 200 Vrms continuous operation which will allow for high velocity testing without the need for an output transformer – saving floor space.

When connected to a LE-DSA15K amplifier, the LE-2016-3″ shaker systems are capable of up to 170 in/sec (4.32 m/s) velocity shock at 11 mSec.

IGBT Advantages

  • Improved Shaker Performance
  • Reduced Energy Consumption
  • More Reliability and Stability
  • Lower Operating Costs
  • Simplified Shaker Operation
  • Reduced Floor Space Requirements
IGBT Amp Test chart
IGBT Amp Test chart

A Powerful Upgrade for Any System

Our new LE-DSA15 amplifiers are the perfect fit to replace an aging amplifier that is currently driving either a Ling Electronics or LDS shaker system, enhancing the performance of the system in both random and shock performance.

The LE-DSA15 models can be configured to drive any manufacturer’s shaker system with the proper field power supply configuration.

Less Is More

The elimination of the output transformer allows the shaker to be direct-coupled, making it possible to operate the shaker at less than 5 Hz.

The transformerless design also eliminates the need for switching for sine, random, and shock profiles. The overall size of the amplifier is thus reduced, freeing up valuable floor space in your vibration test laboratory.

About Data Physics

Data Physics, owned by Battery Ventures, was founded by two Alumni of Hewlett Packard in 1984. Dave Snyder had designed hardware and software for the Fourier Analyzers developed at the Santa Clara Division of HP. Sri Welaratna had worked for HP in England, Europe and then in Santa Clara developing applications of Fourier Analyzers. The first project Dave and Sri did together was the design of the UD 400AT vibration controller, the first to use a PC as the host computer and a DSP based signal processing peripheral. This project began in 1983 and used the Texas Instruments TMS32010, the very first Digital Signal Processor.

Starting with the SignalCalc software library for HP Basic computers Data Physics evolved to signal processing solutions on PCs using add on DSP hardware to provide the computational power required for realtime measurements and analysis.

In 2014, Battery Ventures bought a controlling stake in Data Physics. DP is the fifth active industrial-technology platform in the Battery portfolio. In 2015, Battery Ventures acquired a controlling stake in both Lansmont and Team Corporations, establishing the foundation of the Noise & Vibration Technologies (NVT) Group.

Visit Data Physics Website


Sales Administration

Tarin was born and raised in Wisconsin, graduated from the University of Wisconsin-Stout and received a Bachelor of Science degree in Business Administration. Prior to Vic Myers she worked in the hospitality industry 20+ years as a Sales Analyst/Administrator.

In her spare time, Tarin enjoys spending time with her family, traveling to historical sites throughout the United States, reading, going to movies and concerts. On the weekends you will find Tarin at her nephews’ band concerts and baseball games. In addition, music and dance have been a part of her life with musical contrasting influences ranging from Prince to Olivia Newton-John.  Tarin is located in our Arizona office.


Sales Engineer

Richard was born and raised in Arizona. Attended Arizona State University with a focus in Mechanical Engineering and then fell into Technical Project Management. After 12 years of managing large budget projects spanning system integrations and upgrades, he transitioned into the role of Field Sales Engineer with VMA.

Richard has a deep passion for building relationships with his clients and principals, and supporting them to problem solve and develop innovative solutions. Outside of the office, Richard can be found volunteering as a mentor and coach of high school students at his church, running and hiking the extensive trails of Arizona, and spending time with his wife, 2 boys, 2 girls, and 2 grandkids. Richard is located in our Arizona office.


Field Sales Engineer

Taylor is a Texas native, and grew up in the small town of Boerne, Texas.  He attended Texas A&M University, where earned his bachelor’s degree in Engineering.  After college he was recruited by a Manufacturer’s Rep Firm, where he spent the first 7 years of his career. Initially hired on as an inside salesperson, Taylor quickly accelerated within the organization and expanded into various other roles such as Distribution Manager, and Field Sales Engineer.  Taylor then spent the following 7 years working for an electronic component distributor named Electro Enterprises that almost exclusively supported the mil/aero market.

Taylor worked as a Field Sales Engineer supporting the Texas, Utah and New Mexico territory, Product Manager, as well as Director or Business Development where he managed a team of 10 Field Sales Professionals across the entire United States.  Gathering from his previous experiences, Taylor has now taken on the role of Field Sales Engineer with Vic Myers supporting the Texas, Oklahoma, Louisiana, and Arkansas territory.  Outside of the office you will usually find Taylor either spending time with his wife and two young children, or out on the lake bass fishing.


Field Sales Engineer

Felecia Stivers, a native of Rockford, IL, now excels as a Field Sales Engineer at VMA in our Arizona office. Holding a BSEE from Arizona State University, she draws from her extensive background at Medtronic, Orbital Sciences, General Dynamics, and Northrop Grumman.

Specializing in high-reliability applications, Felecia stands out for her proficiency in relationship-building and innovative problem-solving. Whether contributing to medical devices or playing a vital role in rocket launches, her work has had a tangible impact on saving lives and safeguarding the nation.

Beyond her professional pursuits, Felecia enjoys time with her two teenagers, finds joy in travel, and actively engages with her local church. Driven by a passion for helping customers navigate cutting-edge technology, she is committed to delivering dependable solutions in fast-changing environments.


People and Culture Specialist

Karen has been a part of Vic Myers Associates team since February 2023. Prior to her position as People and Culture Specialist, she worked in the Science & Technology field as an HR Manager & Project Lead for SAIC and LANL. In the short time with VMA she has learned a lot and looks forward to knowing our business even better in support of all of our employees. She values her church community, her two sons who happen to be engineers, volunteering, and golf. Karen is located in our Albuquerque, NM office.


Natalie Myers

Inside Sales Administration

Natalie Myers joined Vic Myers Associates in September 2021 and is excited to be part of the team. She received her bachelor’s in business administration from the University of Phoenix and prior to her position as Inside Sales Administration she worked in the Hospitality Industry for over 15 years as a Senior Sales Administrator. In her free time, she enjoys spending time with her husband, daughter, family and friends along with watching sporting events, traveling, hiking and cheering on her daughter in dance and basketball! Natalie is located in our Arizona office.


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