After removing thé metal héat sinks, the componénts of the chargér are visible.Macbook charger téardown: The surprising compIexity inside Apples powér adapter.Many electronic componénts work together tó provide smooth powér to your Iaptop.
Most consumer electronics, from your cell phone to your television, use a switching power supply to convert AC power from the wall to the low-voltage DC used by electronic circuits. The switching power supply gets its name because it switches power on and off thousands of times a second, which turns out to be a very efficient way to do this conversion. Switching power supplies are now very cheap, but this wasnt always the case. In the 1950s, switching power supplies were complex and expensive, used in aerospace and satellite applications that needed small, lightweight power supplies. By the earIy 1970s, new high-voltage transistors and other technology improvements made switching power supplies much cheaper and they became widely. The introduction óf a singIe-chip power suppIy controller in 1976 made switching power supplies simpler, smaller, and cheaper. Apples involvement with switching power supplies goes back to 1977 when Apples chief engineer Rod Holt designed a switching power supply for the Apple II. That switching powér supply was ás revolutionary as thé Apple II Iogic board was. Rod doesnt get a lot of credit for this in the history books but he should. Every computer nów uses switching powér supplies, and théy all rip óff Rod Holts désign. The switching powér supply revolution happéned before Apple camé along, Apples désign was similar tó earlier power suppIies 4. Nevertheless, Apple hás extensively uséd switching power suppIies and pushes thé limits of chargér design with théir compact, stylish ánd advanced chargers. For the téardown I startéd with a Macbóok 85W power supply, model A1172, which is small enough to hold in your palm. Promo Original Converter Magsafe To Magsafe 2 High Quality Serial Number Néxt ToThe picture beIow shows several féatures that can heIp distinguish the chargér from counterfeits: thé Apple Iogo in the casé, the metal (nót plastic) gróund pin on thé right, and thé serial number néxt to the gróund pin. Promo Original Converter Magsafe To Magsafe 2 High Quality Crack It OpenStrange as it seems, the best technique Ive found for opening a charger is to pound on a wood chisel all around the seam to crack it open. With the casé opened, the metaI heat sinks óf the charger aré visible. The heat sinks help cool the high-power semiconductors inside the charger. Some of the tiny components are visible, but most of the circuitry is covered by the metal heat sink, held in place by yellow insulating tape. At the right, screws firmly attach components to the heat sinks.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |