APT provides AC Sources, Frequency Converters, and Variable Transformers for industries including the militaryaviation, manufacturing, and test & measurement.

We pride ourselves on providing you with the best service in the industry. When you choose APT, you’re choosing a partner that will continue to help you for the life of your product, no matter what the application.
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Customer Happiness Guarantee
We are dedicated to ensuring you are completely satisfied throughout your entire purchasing experience with us. From selecting the right product for your application to support and training, we guarantee your experience will be nothing less than excellent.
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3 Year Standard Warranty
All APT instruments include a 3 year standard warranty. This guarantees your new APT AC Power Source to be free from defects in workmanship for up to 3 years from the date of shipment. There are no additional costs to you for this warranty and no requirements for calibration or inspection.
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10 Business Days Guaranteed Shipping
All new Power Sources orders are shipped from our factory within 10 business days of entering your order. If you order ships late, we pay the freight.
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Speedy Turnaround On Calibration And Repairs
We’ll calibrate or repair your Power Source within 10 business days of receiving it, or we’ll pay the freight.
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We are committed to responsible manufacturing processes and environmental sustainability. Our Green Initiative is led by individuals throughout our organization who are committed to making day-to-day operations as green as possible.

  • We have a ZERO landfill policy for all out-of-service instruments, including all components and materials. All materials are 100% recycled.
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ATTENTION: In observance of the holiday season we will be closed December 24-25, 2019 and January 1, 2020. We are sorry for any inconvenience.