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Rezensionen (4)
02. Jul 2017
Easy enough to put together. Comfortable
Before tightening down all the screws, I'd recommend sitting in the hammock a few times to loosen things up. It will sag lower and lower after you get in and out a few times. Then you can adjust to final height.
Pieces fit together well, some holes were tight because they were painted over. Small issue.
Pretty comfortable and holds up well after rain a few times.
07. Apr 2018
Very noisy supply. Cannot sustain more than 1.5A. 30mA idle draw. Otherwise fine
26 von 27 finden das hilfreich I am going to share my experience of testing and using this device. My intended application was putting it in my car for bluetooth audio purposes. This meant taking a 13.8v input and converting it down to 5v.
First, a comment on size and quality. The converter is about the size of a quarter. All solder joints looked fine to me. I didn't notice any cracking or oxidation in the joints. The potentiometer is a bit small, but can be manageable with a VERY small screw driver.
Now on to my testing. I used a very high quality HP benchtop supply, a Fluke voltmeter, an IR temperature meter, some 2-10ohm 100W resistors, and a DSO 138 oscilloscope. Using these I tested the converter at various loads to determine voltage ripple and temperature.
Looking at the first photo, we can see there is already a 30mA idle current. I believe this item is intended in small applications (likely running on battery power), so definitely keep this in mind. Compared to the other converter, this is way higher.
Time to test this under load. The second and third photos show very high voltage ripple observed at about a 500mA load. Both values obtaining 40mv VPP at frequencies of 1.1kHz and 10kHz. Both would be easily heard anywhere in your audio equipment (unless you put some capacitors in there for filtering). For audio purposes I would not use this item.
Moving on to the last two photos. The fourth photo is the average temperature observed at the hottest point on the board running at around 1A load. At 1.5A load, the final picture shows temperatures observed. At this point, the converter could hold this load for about 30 seconds before it started turning on and off. Not sure where they get their claim for 1.5A sustained power and 3A peak. I tried multiple devices to make sure I didn't have a dud, but they all reproduced the same results.
Overall, I'm not really impressed with this converter. I'd strongly recommend grabbing their other MP1584 device, as it's much more reliable, cleaner voltage signal, and very similar in size. I would only use this if I needed a power source which did not care about noise levels. I likely won't be getting any of these in the future.
07. Apr 2018
Excellent converter. Very low idle draw. Very minimal voltage ripple
16 von 16 finden das hilfreich I am going to share my experience of testing and using this device. My application was putting it in my car for bluetooth audio purposes. This meant taking a 13.8v input and converting it down to 5v.
First, a comment on size and quality. The converter is about the size of a quarter. All solder joints looked fine to me. I didn't notice any cracking or oxidation in the joints.
Now on to my testing. I used a very high quality HP benchtop supply, a Fluke voltmeter, an IR temperature meter, some 2-10ohm 100W resistors, and a DSO 138 oscilloscope. Using these I tested the converter at various loads to determine voltage ripple and temperature.
Looking at the first photo is the hottest temperature observed at about 500mA load. No complaints here. The next photo is the voltage ripple observed at about 1500mA load. With a VPP of 3mv and no observable frequency, I'd say this is a very clean converter. At this load, the third photo shows a temperature of 87F. Very acceptable. Some people on another site had concerns about using these at very low loads, but I didn't notice anything when going down to about 200mA loads.
Now I start to test the limits of the device. At a 2A load (seen in photo 4), I was able to sustain this load without too much of an increase in temperature (around 100F). About average I would say. But the important bit here is that I was able to sustain this load for an indefinite amount of time.
Moving on to the last photo, I tested the device at about a 2.5A load. Temperatures rocketed up to about 154F and (after about 2 minutes) the device would turn on and off. So for anything under 2A, this device will work great for you.
Not shown here is the idle current, but it didn't even show up on my benchtop supply (so less than 10mA).
Overall, very impressed with this device. It is accurate to it's description and I will definitely be using some more in the future.