Introdução
The RadioShack 22-510 Switching Power Supply provides AC to DC conversion to mimic a car’s electrical system. This teardown looks at some of the components that make this supply function.
O que você precisa
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Removing the eight cover screws on either side of the power supply allows the cover to lift off
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A fuse protects the system from overcurrent conditions and the chassis is grounded to protect the user from shorts to the case.
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The fan connector pulls out by hand. The spade terminal connectors may require coaxing with a pair of pliers.
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The Sunon MagLev KDE1205PFV2 runs at 4300 RPM for a maximum airflow of 13 CFM. A dirty fan might not meet these specifications. Remember to clean your fans!
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The illuminated switch is connected by two sets of black and white AC wires and held in by two locking tabs.
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Removing the heatsink from the spreader reveals the liberal use of thermal paste. Try not to get it on your hands, it's tough to wash off!
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The silver heat spreader is screwed to the chassis and must be detached before removing the board.
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The board lifts out of the chassis after removing the five screws holding it down.
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The UC3842BN PWM controller handles the switching feedback.
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The chassis has a sheet of plastic for short circuit prevention under the board.
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A thermally conductive pad lies under the heatsink assembly for additional cooling capability.
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