Price : $24.99
Elenco Variable Voltage Power Supply Kit - Assembly of this XP-15 Regulated Variable Power Supply Kit will prove to be an exciting project and give much satisfaction and personal achievement. If you have experience in soldering and wiring technique, you should have no problem following the detailed instructions that are provided and successfully assembling of this kit. The Variable Voltage Power Supply Kit is a handy portable power supply with a variable output voltage of 15VDC. Specifications: Input voltage - 120VAC, Output voltage - 1.25 - 15VDC, Output Current - 0.5A @ 8V, 0.3A @ 12V, 0.2A @ 15V, Short Protected IC Thermo, Mounted in a rugged Bakelite case.Made in the United States.
Features include:
•Build a regulated variable power supply
•Detailed easy to understand instructions
•Complete this kit and you will have a handy portable variable output power supply
•Made in the United States
•For 30 years Elenco has been using their strong engineering and design skills to develop reliable, affordable electronic test equipment, tools, and educational kits
Feature Elenco Variable Voltage Power Supply Kit
- For 30 years Elenco has been using their strong engineering and design skills to develop reliable, affordable electronic test equipment, tools, and educational kits
- Made in the United States
- Complete this kit and you will have a handy portable variable output power supply
- Detailed easy to understand instructions
- Build a regulated variable power supply
This review is from : Elenco Variable Voltage Power Supply Kit
Somewhat challenging variable voltage power supply KIT . I needed a variable supply voltage kit for various projects I work on and this was a project in itself. For me, that is a good thing! After soldering and assembly, it works great. The description clearly states that this is a kit and if you can solder, you can build it. So, I had to review it. Any way, assembles and functions as expected.
Somewhat challenging variable voltage power supply KIT . I needed a variable supply voltage kit for various projects I work on and this was a project in itself. For me, that is a good thing! After soldering and assembly, it works great. The description clearly states that this is a kit and if you can solder, you can build it. So, I had to review it. Any way, assembles and functions as expected.
Elenco Variable Voltage Power Supply Kit Reviews
fun-to-build small power supply . The power supply runs off of the LM317T variable voltage regulator, so it has a fairly low part count and is relatively easy to assemble. In my kit, the 220uF and 470uF electrolytic capacitors had been also replaced with one 1000uF cap, but it worked fine when assembled, so no issues there.(perhaps the design was revised without updating the instructions). Testing the supply with a multimeter, I noticed that the voltage output actually ran up to about 16.5V at its maximum, and the voltage seemed to remain stable under a load.On the downside, however, the circuit board that it comes with is fairly low quality, meaning that the thin copper traces can lift off the board and become damaged if one is not careful when putting it together, or if the power supply is dropped after it has been assembled. I was also troubled by the lack of an on/off switch, as now the only way to shut it off is to unplug it. Lastly, with a current rating of only 0.2A at 15V, I am not entirely sure how practical this is at its upper voltage limits. All things considered, everything worked as advertised, and I was able to solder the entire thing together in a couple of hours. Now that it is finished, it is quite useful for my other projects, and will probably save me quite a bit on batteries.
fun-to-build small power supply . The power supply runs off of the LM317T variable voltage regulator, so it has a fairly low part count and is relatively easy to assemble. In my kit, the 220uF and 470uF electrolytic capacitors had been also replaced with one 1000uF cap, but it worked fine when assembled, so no issues there.(perhaps the design was revised without updating the instructions). Testing the supply with a multimeter, I noticed that the voltage output actually ran up to about 16.5V at its maximum, and the voltage seemed to remain stable under a load.On the downside, however, the circuit board that it comes with is fairly low quality, meaning that the thin copper traces can lift off the board and become damaged if one is not careful when putting it together, or if the power supply is dropped after it has been assembled. I was also troubled by the lack of an on/off switch, as now the only way to shut it off is to unplug it. Lastly, with a current rating of only 0.2A at 15V, I am not entirely sure how practical this is at its upper voltage limits. All things considered, everything worked as advertised, and I was able to solder the entire thing together in a couple of hours. Now that it is finished, it is quite useful for my other projects, and will probably save me quite a bit on batteries.
Elenco Variable Voltage Power Supply Kit Opinions
Nice little power supply . The power supply when assembled is excellent. Actually looks like a guitar pedal from afar, nice small size. I've built this kit, as well as the Elenco XP-720 kit. The XP-720 is obviously a little more involved, and takes a lot more time to build (but well worth it). This kit took less than an hour to build, even with the problems I had. A manual that I found online for this kit was for an older version, which showed everything soldered point to point with no PCB. My kit, to my surprise, had a PCB (printed circuit board).The reason for 4/5 stars is because of missing/wrong parts.
First off, one of the binding post nuts had messed up threads. I didn't notice this until I had tried to thread it on. I ended up having to re-thread the plastic binding post and use the applicable nut. Luckily I had one laying around that worked.
Second, one of the capacitors was completely missing. 220uF capacitor didn't come with my kit. So I ended up using a 470uF that I had laying around. If you don't have spare parts laying around, you would have to call Elenco or make a run to radioshack.
The manual mentions a 470uF capacitor, which was no where to be found. Instead, there was 1000uF capacitor in the kit. Not a reason to knock stars off, but it seems like someone was not paying attention when they put the parts in the box. I had no such issues with the XP-720 kit.I used a blue LED instead of the included red LED, looks cool.One thing to mention, turning the POT to zero brings the output into the mV range, but it doesn't actually turn the power supply off. You must plug and unplug it. A future modification might be to add a switch, but I don't mind it for now. The case is made of plastic by the way.
Nice little power supply . The power supply when assembled is excellent. Actually looks like a guitar pedal from afar, nice small size. I've built this kit, as well as the Elenco XP-720 kit. The XP-720 is obviously a little more involved, and takes a lot more time to build (but well worth it). This kit took less than an hour to build, even with the problems I had. A manual that I found online for this kit was for an older version, which showed everything soldered point to point with no PCB. My kit, to my surprise, had a PCB (printed circuit board).The reason for 4/5 stars is because of missing/wrong parts.
First off, one of the binding post nuts had messed up threads. I didn't notice this until I had tried to thread it on. I ended up having to re-thread the plastic binding post and use the applicable nut. Luckily I had one laying around that worked.
Second, one of the capacitors was completely missing. 220uF capacitor didn't come with my kit. So I ended up using a 470uF that I had laying around. If you don't have spare parts laying around, you would have to call Elenco or make a run to radioshack.
The manual mentions a 470uF capacitor, which was no where to be found. Instead, there was 1000uF capacitor in the kit. Not a reason to knock stars off, but it seems like someone was not paying attention when they put the parts in the box. I had no such issues with the XP-720 kit.I used a blue LED instead of the included red LED, looks cool.One thing to mention, turning the POT to zero brings the output into the mV range, but it doesn't actually turn the power supply off. You must plug and unplug it. A future modification might be to add a switch, but I don't mind it for now. The case is made of plastic by the way.
Product Details
EAN : 0756619000374UPC : 756619000374
MPN : XP-15K
Brand : Elenco
Weight : 3 pounds
Height : 4 inches
Length : 11 inches
Width : 5 inches
Binding : Toy
Manufacturer : Elenco
Manufacturer Maximum Age : 16 years
Manufacturer Minimum Age : 12 years
Model : XP-15K
Publisher : Elenco
SKU : XP-15K
Studio : Elenco
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