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Recent Posts. July 2, Encryption is a superb instrument. March 5, Generally, the processor is referred to as CPU, or December 19, There are different electrical parts in the CPU ca November 17, Similar to a flu virus, a computer virus is design This transportation method is actually cheaper than shipping on pallets with cargo aircraft.
All the loading, unloading, vibration, and possible falls of the master boxes can kill a notable number of PSUs, especially if they're not adequately protected in their boxes. We are not referring to software bugs here, but actual insects. In the past, we've encountered some PSUs from Chinese brands that feature a piece of foam between the soldering side of the PCB and the chassis, and we wondered about its purpose. It turns out the foam is supposed to keep insects away, because in some environments, ants and roaches can cause fatal short circuits by entering the PSU's internals.
But that foam is expensive, and it leaves the component side of the PCB unprotected. You cannot do much about the first six, but you can keep bugs away from your system, and a power conditioner or UPS will protect the PSU from surge voltages, brownouts, and voltage sags, which also apply huge stress to the PSU's circuits. If you live in an area with an unstable mains grid, then the use of a quality UPS is essential.
Image 1 of 3. Image 2 of 3. Image 3 of 3. Aris Mpitziopoulos. Topics Components. See all comments Great article. I used to design power supplies for industry, and your comments are right on. For instance, cracked ceramic caps can result in both mechanical stress from the soldering process and high vibration during transport. The bugs found are also very real! I have found insects and animals before inside of products.
When I was in college I would make extra money repairing arcade games. One game had a CRT monitor that was blank, and inside I found a very well cooked mouse with one front paw on the HV connection going to the monitor, and his back foot was on kine ground HV ground. He had destroyed the monitor because his feet had put HV everywhere. But as Edison had said of his mousing days, they had "left this worldly sphere".
Another point is on UPS systems. Most of the cheaper ones are "standby" or line interactive types. The only UPS system that continuously clean the power are double conversion and are more expensive and have lower efficiency.
For this reason, the standby types are often marketed as green power efficient types, which they are, but only because they act only when the power glitches. If you truly have bad power in your area, you need a double conversion type to protect your electronics. Appreciate the good articles - Charles. Wonderful article; to sum it up, the manufacturing process and good soldering seem to be the most important thing for high end PSUs.
Hopefully this will help people to realize electrolytic capacitors are not quite as relevant for high end PSUs. I had the bad luck of having 3 Seasonic PSUs malfunctioning after around 2 months of use. The model was S12II Either a problem in the power supply itself or something that the power supply feeds may be shorted or overloading the power supply. Perhaps the control electronics itself is malfunctioning? Thanks for this article. Everything you have described is the same as my experience so far.
Capacitors in my Class A amplifier power supply last up to 2 years, after which they must be replaced. I checked the box has degrees Celsius depending on the ambient temperature.
But the size and the weight are also important. You are commenting using your WordPress. You are commenting using your Google account.
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