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How to Achieve Variable Internal Resistance Functionality Easily Using PBZ Series High-speed Bipolar Power Supplies The stabilized DC power supplies sold by Kikusui Electronics are often compared with batteries. In the sense that direct current can be drawn from both, in terms of purely voltage or current, they are the same, but in fact there…

Reproducing High-Voltage Three-Phase AC Waveforms Observed Onsite On-site equipment malfunction is a common occurrence. Malfunctions have a variety of causes, including common mode or differential (normal) mode noise across power supply lines and power fluctuation. When equipment does malfunction, the first response should be to log the output waveforms of the power supply lines on…

Three Lessons for Effective Projects What qualities do you think are important in an engineer? Technical expertise? Knowledge and research skills? Creativity? The stamina to go without sleep for days at a time? While there is something to be said for all of these, I believe the ability to run effective client meetings is as…

DC Power Supply: Basic Wiring to Load and Action against Unstable Output Many of our DC power supply products are equipped with a parallel operation function that allows the output capacity to easily increase by connecting DC power supply units of the same model in parallel. Master-slave parallel operation is highly rated and the front…

Probe calibration is an essential part of using an oscilloscope. In this article we revisit the basics of calibration When the Waveform Does Not Mach the Calibration Chart I mainly work with surge testers used in the testing of automotive device. Sometimes a customer will say, “We recently installed a Kikusui instrument. We purchased a…

Bias power supply An electronic load is one of the forms of direct current power supply called a shunt regulator, as shown below. Normally, electronic load have the minimum operating voltage predefined. This is because the Vce of a transistor does not work at 0V. Therefore, when you want to perform a “reverse-polarity test of…

Traps for first-time software engineers This story is from early in my career, back when I had little experience with software development. It concerns a blunder I made on a firmware development project. The device I was writing firmware for was designed so that the input and output (I/O) signals could be switched remotely. We…

Four points to try In a situation when you are busy with your work every day, if an error message is issued from a test instrument or equipment you are using or it does not work properly, it is very easy to feel rushed or frustrated. In that situation, how do you solve the problem?In…

Why measurements of the electrical properties of a device connected to a regulated AC power supply differ from those made when the device is connected to mains power It is customary to express the power consumption of industrial devices in Volt-Amps (VA) because they tend to consume a lot of power. Some devices lack a…