crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

RadioShack 22-510 Switching Power Supply Teardown

crwdns2935163:0crwdne2935163:0 mooflips (crwdns2935087:02crwdne2935087:0)
crwdns2935165:0March 3, 2016crwdne2935165:0
  • crwdns2935167:0crwdne2935167:0 0
  • crwdns2935169:0crwdne2935169:0 1
  • crwdns2935171:0crwdne2935171:0 3crwdns2936485:0crwdne2936485:0

RadioShack 22-510 Switching Power Supply Teardown

crwdns2935163:0crwdne2935163:0 mooflips (crwdns2935087:02crwdne2935087:0)
crwdns2935165:0March 3, 2016crwdne2935165:0
  • crwdns2935167:0crwdne2935167:0 0
  • crwdns2935169:0crwdne2935169:0 1
  • crwdns2935171:0crwdne2935171:0 3crwdns2936485:0crwdne2936485:0

crwdns2918522:0crwdne2918522:0

crwdns2915892:0crwdne2915892:0

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.

crwdns2942213:0crwdne2942213:0

crwdns2935311:0crwdnd2935311:0crwdne2935311:0 crwdns2935313:0RadioShack 22-510 Switching Power Supplycrwdnd2935313:0crwdnd2935313:0crwdne2935313:0

  1. RadioShack 22-510 Switching Power Supply Teardown, Disconnect Supply Power: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Disconnect Supply Power: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Ensure the power supply is unplugged from mains power before continuing. If the device is powered on during disassembly, serious harm or death may occur.

    • The entire power supply can be taken apart with a Phillips screwdriver and adjustable wrench.

    crwdns2913378:0crwdne2913378:0

  2. RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove the Cover: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    crwdns2935267:0crwdne2935267:0
    Magnetic Project Mat
    $19.95
    crwdns2945778:0crwdne2945778:0

    • Removing the eight cover screws on either side of the power supply allows the cover to lift off

    • Screws can be organized using an iFixit Magnetic Project Mat

    • A fuse protects the system from overcurrent conditions and the chassis is grounded to protect the user from shorts to the case.

    crwdns2913378:0crwdne2913378:0

  4. RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove Fan: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The fan connector pulls out by hand. The spade terminal connectors may require coaxing with a pair of pliers.

    • 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!

    crwdns2913378:0crwdne2913378:0

  5. RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove Switch: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The illuminated switch is connected by two sets of black and white AC wires and held in by two locking tabs.

    • The switch is hooked up to the primary side of the circuit. If the switch faults while energized, it has potential to shock the user.

    crwdns2913378:0crwdne2913378:0

  6. RadioShack 22-510 Switching Power Supply Teardown, Remove Heatsink and Heat Spreader: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove Heatsink and Heat Spreader: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • 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!

    • The silver heat spreader is screwed to the chassis and must be detached before removing the board.

    crwdns2913378:0crwdne2913378:0

  7. RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 RadioShack 22-510 Switching Power Supply Teardown, Remove the Board From the Chassis: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • The board lifts out of the chassis after removing the five screws holding it down.

    • The capacitors may still be charged, do not touch the terminals! The capacitors can be discharged by shorting the terminals with an insulated screwdriver.

    • The UC3842BN PWM controller handles the switching feedback.

    • The chassis has a sheet of plastic for short circuit prevention under the board.

    • A thermally conductive pad lies under the heatsink assembly for additional cooling capability.

    • Organized parts make reassembly a breeze.

    crwdns2913378:0crwdne2913378:0

crwdns2862417:0crwdne2862417:0

crwdns2935293:0crwdnd2935293:02crwdnd2935293:0crwdne2935293:0

mooflips

crwdns2935283:008/17/13crwdne2935283:0

111 crwdns2915208:0crwdne2915208:0

crwdns2935295:0crwdne2935295:0

crwdns2918514:0crwdne2918514:0: 2

crwdns2947412:00crwdne2947412:0

crwdns2917038:0crwdne2917038:0

crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 7

crwdns2936753:030crwdne2936753:0 20

crwdns2942667:0crwdne2942667:0 3,052