Hello, gentlemen. I have a new question. I purchased and assembled a Riden RD6006 DC digital power supply, basing it on a 24 volt X 14.6 amp enclosed power source. After assembling and testing it I had to spend a few days reading through the dismissive "Manual" and watching YouTube segments to feel safe using it, but it seems to be responding as described. The one problem I have is that, judging by the display, at least, the output will go no higher than 9 DC volts and 6.1 amps. I realize that the device is a step-down or Buck convertor, but it's lopping off 60% of the power source's output! Is that something I should have been aware of in advance? Or did I miss something in the assembling of the PS? I was getting better results with the same power source plus a $7.00 PWM.

 

I would say that getting 55 Watts from a 350 Watt source is pretty crappy performance. Why do you think this qualifies as a "well regarded power supply". Looks like a POS to me!

 

Does it get above 9V with no load?

 

I purchased and assembled a Riden RD6006 DC digital power supply, basing it on a 24 volt X 14.6 amp enclosed power source. After assembling and testing it I had to spend a few days reading through the dismissive "Manual" and watching YouTube segments to feel safe using it, but it seems to be responding as described. The one problem I have is that, judging by the display, at least, the output will go no higher than 9 DC volts and 6.1 amps.

It doesn't sound like it's working as described. Are you certain that you didn't make a mistake during assembly? Or that it's defective? Are you able to troubleshoot it?

Your definition of well regarded isn't the same as mine. I like things that are assembled and tested by the manufacturer. If I wanted to assemble it myself, I'd design it myself.

 

I would say that getting 55 Watts from a 350 Watt source is pretty crappy performance. Why do you think this qualifies as a "well regarded power supply". Looks like a POS to me!

I agree, but I'm willing to believe either that there's something I haven't done correctly, or a detail in the miserable user guide that I missed. To get as much out of the instructions as I was able to get, I had to disassemble, then re-assemble the PDF. There's not much that can be misinterpreted with an enclosed power source, but this is a computerized add-on front end with a Buck convertor built into it.

Does it get above 9V with no load?

That could be the problem. I've been assuming that turning it on dry, with no load, I could at least see what it was capable of before connecting it to the load, which requires a mere 17 watts. Before going over the user guide I did connect it to the load, which is simply a 20ga. Nichrome wire. I couldn't get the wire over about 150º-clearly not enough, but I hadn't really learned how to set the controls.

 

Hello,

It seems to be a chinese product:
https://www.banggood.com/RD6006RD60...ly-p-1587151.html?ID=6279943&cur_warehouse=CN
https://www.aliexpress.com/item/4000282551930.html

This blog has a description and a manual in chinese and english to download:
https://tech.scargill.net/riden-rd6006-dc-variable-power-supply/

Bertus

 

It doesn't sound like it's working as described. Are you certain that you didn't make a mistake during assembly? Or that it's defective? Are you able to troubleshoot it?

Your definition of well regarded isn't the same as mine. I like things that are assembled and tested by the manufacturer. If I wanted to assemble it myself, I'd design it myself.

It could be defective or the results of my own error, but I don't know enough to troubleshoot it. I may need to take it apart and redo it. I know the output amps and volts will be below the input, but what I'm getting out of it is pathetic. It isn't overheating, but it does make a horrendous amount of fan noise at startup.

 

Your verbal terminology is mostly devoid of meaning. I have no idea what a "computerized add-on front end"refers to. I suppose it is possible that some novice designer somewhere said one day: "Why don't I add a 55 Watt buck converter to this fine 350 Watt power supply -- maybe somebody will buy it".

Edit: Thanks to Bertus for providing the link to pictures and documentation. Did you buy both pieces from Banggood, or are you just connecting the front "control part" to an existing power supply.

 

Does it get above 9V with no load?

 

The Riden RD6006 is a display unit with PWM control designed to be used to convert (Read: sell more) surplus fixed voltage switch-mode power supplies into an adjustable variable switch-mode power supply with a digital readout of V, I, and P for its output. It may not be the Riden RD6006 front end, it may be the fixed power supply at fault?

 

Your verbal terminology is mostly devoid of meaning. I have no idea what a "computerized add-on front end"refers to. I suppose it is possible that some novice designer somewhere said one day: "Why don't I add a 55 Watt buck converter to this fine 350 Watt power supply -- maybe somebody will buy it".

The only other PSs I own are analog- plug them in, turn them on, and adjust what can be adjusted while watching either built-in analog meters or my multimeter, or both. This one is digital, with a digital display, capability to store settings, and a lot of other features I'll never use. What comes in the shipping box is the Front End, a collection of controls that runs the display, integrated with a step-down convertor, plus a long steel box into which the custie mounts his or her choice of enclosed power supplies.

 

I would certainly conduct an investigation of the input supply.

 

I would certainly conduct an investigation of the input supply.

Garbage In Garbage Out

Well-known IT aphorism.

 

The Riden RD6006 is a dislplay unit with PWM control used to convert surplus fixed voltage switch-mode power supplies into an adjustable variable switch-mode power supply with a digital readout of V, I, and P for it's output. It may not be the Riden RD6006 front end, it may be the fixed power supply at fault?

OK, you could be right. The RD6006 display indicates that the input voltage is up to par, i.e., 24 volts being delivered by the power source. So I will try connecting a different source. I have two others that work fine, but neither of them can put out 60 volts, which the RD6006 is prepared to accept. 60 volt PSs go for about $300, but I know that my load-the nichrome wire- would not require a 60 volt supply. It will suffice to deliver 17 watts, which can be got with 6 amps and 3 volts. So something is wrong somewhere.

 

When we first tried to uses an SMPS supply for (BLDC) the spindle motor of a 5-1/4" hard drive (ca. 1980) we noticed that when trying to spin up the motor, the supply voltage would drop to it's knees and not bother to stop there. The problem was exceedingly poor transient response.

 

OK, you could be right. The RD6006 display indicates that the input voltage is up to par, i.e., 24 volts being delivered by the power source. So I will try connecting a different source. I have two others that work fine, but neither of them can put out 60 volts, which the RD6006 is prepared to accept. 60 volt PSs go for about $300, but I know that my load-the nichrome wire- would not require a 60 volt supply. It will suffice to deliver 17 watts, which can be got with 6 amps and 3 volts. So something is wrong somewhere.

The only real problem with less than 60 volts on the input is that the output will only go up to a maximum of (Vin - 1)Volt

 

It could be defective or the results of my own error, but I don't know enough to troubleshoot it.

Did the kit come with a schematic?

 

Thank you all for your input. You've given me a place to start (the enclosed power supply), and convinced me that there's likely to be an error in my assembly. I'm not an EE by any stretch. I'm a greenhorn, so now I get to try and fix it.

 

Did the kit come with a schematic?

 

No schematic. Probably to avoid reverse-engineers. It would help greatly to have one.