On Thu, at 8:42 PM, Dennis Tillman W7PF wrote: For certain tests a true resistive load is the only way. Whatever you buy or build, always keep in mind that there is a control loop involved. You can make a load fairly easily, I have always used a beefy mosfet on a heatsink, with a shunt resistor in the source lead. I have also built several of my own where commercial products did not offer what I needed.Īre you looking at the Chinese loads in a desktop case such as the Maynuo branded one, or something else? I have not tried the loads on Ebay but use different electronic loads extensively every day. To: Re: Any experience with ELECTRONIC LOADS would be appreciated Ditto things like HP system PSUs and so on. It's worst point is that it dates from HP's non-backlit-LCD era so the display is a bit poor but I tend to use it under GPIB control rather than via the front panel anyway becauseĪ) It's mounted at the bottom of a rack and as one gets older the ground gets further away of course, so it takes longer to get down and press the buttonsī) Some of the functions can only really be accessed through that interface andĬ) Having produced a couple of little scripts it's actually quicker to set things up that way. I got everything for less than half the 'typical' price. I'm happy with it and have had no issues, like much of what's on ebay if you can wait a bit, usually you can get things at a good price. Used it a fair bit for PSU testing including response to fast transient current loads and for developing inrush limiting circuitry to put ahead of DC-DC converters in 28VDC avionic applications. I got an HP6050A from ebay a couple of years back and have 60501B (150W 60V), 60502B(300W 60V) and 60503B (250W 240V) modules to go with it. I can add a fan to keep the heatsink cool if This should be no problem asģ) Power of about 50W. Has anyone bought an electronic load off of Ebay? If so what hasġ) Voltage as high as possible: it looks like that will be about 100VĢ) Modest current drain of an amp or two.
It would appear the Ebay ones are variations on about 10 differentĭesigns. I occasionally have a need for an electronic load. For certain tests a true resistive load is the only Whatever you buy or build, always keep in mind that there is a control On a heatsink, with a shunt resistor in the source lead.Ī simple opamp control loop can do constant voltage/current/resistance control. You can make a load fairly easily, I have always used a beefy mosfet There is information about them here, they are apparently no so bad: I have also built several of my own where commercial products did notĪre you looking at the Chinese loads in a desktop case such as the
#3710a electronic load software#
Software to implement real-time remote control and monitoring.I have not tried the loads on Ebay but use different electronic loads
#3710a electronic load Pc#
The TP3710A Programmable DC load also features internal memory,Īnd can be connected to a PC via a USB port with the included Testing DC power supplies, high-capacity batteries, solar panelsĪnd etc, ideal for labs, research institutes, R& D facilities. Versatility, it’s an invaluable and indispensable tool for Rotary switch and a numeric keypad which may be used to set up Maximum power of up to 150 Watts and can be used with power This programmable DC Electronic Load has a
The Tekpower TP3710A DC electronic load is a compact andĪffordable instrument that is suitable for both home and 150 Watts DC electronic load with programmable PC USB interface, software included High accuracy, resolution and precision instrument, calibration certificate included Constant current / constant power / Constant resistance mode Over voltage / over current / over power / over heat / polarity reversion protection LCD display with backlight + AC 120V/220V selectable.
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