This buck converter/step down circuit is based on KA7500c SMPS controller chip, the following circuit is from the reference design you can find the details of the circuit and calculations from the document. This is one of the application circuit built around with KA7500C, this buck converter can suply a load current of 5.75Ampere at 5V we could…
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It may be gift-giving season, but we won’t blame you if you scoop up the Audio Technica x UO Vinyl Record Player for yourself. Between the two exclusive UO colors and two speeds—33 1/3 RPM and 45 RPM—this player will not only have your place sounding good, but looking great, too. But before you’re ready to rock, it might help to assemble the thing. Allow us to walk you through it. Words by Allie Volpe What you should have: turntable platter with red tape ribbon turntable mat dust cover headshell assembly with attached tone arm stylus and stylus guard 45 RPM adapter red and white RCA-type pin-plugs two RCA adapter cables 3.5 mm male mini-plug 3.5 mm female mini-plug What you should do: Start assembling. Make sure the player isn’t connected to power first. Then you’ll delicately place the turntable platter onto the spindle in the center of the player, with the red tape ribbon facing up. Grab both ends of the ribbon and carefully pull the turntable belt over the motor pulley—which is accessible under the turntable platter—so the belt can move freely. Once that's finished, discard the red ribbon. At this point, place turntable mat on top of the turntable platter (which you’ve already placed on the center spindle). This is to protect your vinyl, reduce friction and gives you an overall better sound. You won't want to use the player without it. From there, you’ll take the plastic dust cover, place the hinges into the hinge receptacles at the back of the turntable housing and gently press down until the cover locks into place. To remove it, hold both sides of the dust cover and pull up. Now, you'll need to connected to a stereo system. This is where you’ll need those red and white RCA pin-plugs. Take the red input and plug it into the right channel input of your system, then grab the white and plug that into the left channel input. There’s a small switch on the back of the player called Pre-amp Switch. If you’re plugging the stereo input into a sound system that has a 'phono' input, you’ll hit the switch to that. If your stereo does not, you’ll flip to 'line.' The 3.5 mm adapter cables are included in case the RCA connectors don't fit with your stereo system, and are compatible with the red and white RCA pin-plugs. When using either of these adapters, you’ll want to make sure the Pre-amp Switch is set to 'line.' Now, test the automatic functions by turning the turntable platter clockwise 10 times, slowly, while the tone arm is still nestled into its rest. You can remove the stylus guard from the stylus assembly as well as the tie that binds the tone arm to its rest. Now, you can plug in your Audio Technica and you're almost to the finish line. Just a few more items of note: only clean (regularly!) with a dry cloth; don’t touch the stylus tip with your fingers—and only clean that with a soft brush in a back-to-front motion. To replace the stylus—which you should after about 400 hours of use—steady the tone arm and wiggle the stylus out of place. Grab your replacement, being careful not to touch the stylus itself, and place the body of the replacement first into the tone arm head and then gently push up so the stylus clicks into place and fits smoothly with no gap. Now grab your favorite vinyl and start listening. If you need to, place the 45 RPM adapter under the record. Then select the size of the record—12' or 7'—and speed—33 1/3 RPM or 45 RPM—via the appropriate buttons on the front of the player. Things can go one of two ways here: You can choose automatic mode or manual mode. For automatic, you’ll hit the start button and the turntable will start to revolve, followed by the tone arm moving into place. When the record is complete, the tone arm will retreat and the player will turn off. No other action needed. You’ll also be able to pause and re-start by hitting the tone arm lift button. On the manual setting, you’ll hit the lift button, making sure it’s pushed in, to raise the tone arm. Guide it so the stylus is hovering over where you want to start the record, then hit the lift again to lower the tone arm. Now, you'll just need to pick up a few records and start listening. Shop the Audio Technica x UO Vinyl Record Player now
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Today, we’re happy to bring you some of our favorite picks in our Holiday Tech Gifts series–cool gifts for the audiophile. With music so much a part of our world, whether you’re rocking the earbuds at the gym, starting to go wireless with your home speakers, or hooking your kids up to a movie on […]
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