I control my bench power supplies using Python, over the LAN, and have a much broader range of voltages, and current available. This seems to be an expensive niche solution to ... something?
it would be interesting for these reviews to cover software availability for different OS, sadly a lot of specialized software is only available on windows. So its always good to know if alternative software works with a device or if there is a linux or mac version. (especially if its controls are purely software based)
Good point. I made the assumption that someone interested in this supply would be familiar with Digilent Waveforms, which is a cross-platform application. They have binaries for Windows / macOS / Linux. The Linux binaries are available as .deb and .rpm packages. (At one point, they had a build for Raspbian / RaspberryPi OS, too.)
It is the nature of how they work. They are basically a JFET in a control loop monitoring the voltage drop of a sense resistor. Using that drop, it varies the resistance of the FET to simulate constant current, voltage, or resistance. So as the supply's voltage varies, the load varies its FET resistance, which affects the voltage, which causes the supply to adjust its voltage more. So they end up working against each other (a little bit.) Electronic loads are very reactive. They are not a true constant supply like a discrete resistor.
@@bald_engineer Try to make a YT lesson about measuring the PARD and Ripple on various Electronic loads. This would help me know how to measure PARD and Ripple on various Reactive loads
@@waynegram8907 That is not what I meant. Electronic Loads use JFETs as variable resistors, not switches. The time it takes for them to sense a change and react creates ripple. Just like the time it takes a (bench) power supply to sense and react creates ripple. That's why they are considered reactive. They have a time component to their response.
I control my bench power supplies using Python, over the LAN, and have a much broader range of voltages, and current available. This seems to be an expensive niche solution to ... something?
it would be interesting for these reviews to cover software availability for different OS, sadly a lot of specialized software is only available on windows. So its always good to know if alternative software works with a device or if there is a linux or mac version. (especially if its controls are purely software based)
Good point. I made the assumption that someone interested in this supply would be familiar with Digilent Waveforms, which is a cross-platform application. They have binaries for Windows / macOS / Linux. The Linux binaries are available as .deb and .rpm packages. (At one point, they had a build for Raspbian / RaspberryPi OS, too.)
This is the type of devices that should have a screen and be fully usable without a PC.
Aside from its other gotchas, the form-factor isn't very practical unless it's going to live on a shelf above a work-bench for instance.
ELEMENT14, Why does Electronic Loads add more ripple? you didn't explain or show in a YT lesson about measure the ripple on Electronic loads.
It is the nature of how they work. They are basically a JFET in a control loop monitoring the voltage drop of a sense resistor. Using that drop, it varies the resistance of the FET to simulate constant current, voltage, or resistance. So as the supply's voltage varies, the load varies its FET resistance, which affects the voltage, which causes the supply to adjust its voltage more. So they end up working against each other (a little bit.)
Electronic loads are very reactive. They are not a true constant supply like a discrete resistor.
@@bald_engineer Try to make a YT lesson about measuring the PARD and Ripple on various Electronic loads. This would help me know how to measure PARD and Ripple on various Reactive loads
@@bald_engineer FETS cause switching noises but FET switching off/on is considered Ripple or PARD?
@@waynegram8907 That is not what I meant. Electronic Loads use JFETs as variable resistors, not switches.
The time it takes for them to sense a change and react creates ripple. Just like the time it takes a (bench) power supply to sense and react creates ripple.
That's why they are considered reactive. They have a time component to their response.
So...I don't think he liked it
500 dollars, rip
the minimum wage in my country is like 200 dollars