Blog

October 23, 2026
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Price Update for Jan 2027

The cost of building Joulescopes has increased due to rising component costs and tariffs. We will be increasing prices in Jan 2027. If you plan to purchase Joulescopes, you have until December 31, 2026, to place orders at the current price. Thank you for your support and understanding!

August 7, 2026
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The Joulescope Story

Interested in starting your own hardware business? Matt Liberty joins Robert Feranec to discuss what it really takes to design, build, and ship hardware.

Read moreabout Look Inside the JS320

May 26, 2026
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What's new with the JS320?

The JS320 builds on the JS220 with a redesigned measurement path focused on low-current accuracy. Learn how improved offset stability, Enwavify™ v2, and new signal-chain architecture deliver better results for modern low-power devices.

January 17, 2022
0 commentson Pricing changes for Jan 2022

Pricing changes for Jan 2022

To our customers, The past year has been challenging. In addition to continued uncertainty due to SARS-CoV-2, we are in the middle of a historic semiconductor shortage, which started becoming critical in early 2021. The shortage shows little signs of...

November 27, 2019
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Software Architecture and State

In this blog post, we examine our recent work with the Joulescope User Interface (UI). We step back from current and voltage measurements to discuss our challenges and how we improved the software architecture for future success. Software architecture is how software...

Joulescope launches today, empowers engineers to extend battery life

Jetperch LLC announces Joulescope™, an affordable test instrument that empowers engineers to develop products with increased power efficiency and longer battery life By: Jetperch LLC OLNEY, Md. - July 9, 2019 - PRLog -- Energy efficiency is critical for electronics products, especially for battery-powered and...

February 19, 2019
0 commentson New DC Energy Analyzer Charges Up on Kickstarter

New DC Energy Analyzer Charges Up on Kickstarter

Jetperch LLC hopes to raise $68,800 to launch an affordable test instrument that helps engineers, developers, and makers create more energy efficient electronic products By: Jetperch LLC OLNEY, Md. - Feb. 19, 2019 - PRLog -- Joulescope™ launches on the crowdfunding site Kickstarter today. Starting...

February 5, 2019
0 commentson How to measure current

How to measure current

Electrical current is the flow of electric charge from positive voltage to negative voltage. We now know that electrons move through conductors from negative voltages to positive voltage. We had a 50⁄50 chance of guessing “right”, so, yeah. Electrical current is the...