Ferramentas utilizadas neste teardown

Introdução

Find out what makes a cordless drill/driver whirr.

Este teardown (desmontagem analítica) não é um guia de reparo. Para reparar seu/sua DirectPower DE157 Cordless drill-screwdriver, use o nosso manual de serviço.

  1. The driver kit.
    • The driver kit.

    • This is a more-or-less no-name cordless screwdriver/drill kit, but its construction more or less matches most of these devices.

    Adicionar comentário

  2. The charger consist of a standard wallwart, output 14.4V 350mA, along with a little block (weighing nothing at all) to connect to one of the battery packs.
    • The charger consist of a standard wallwart, output 14.4V 350mA, along with a little block (weighing nothing at all) to connect to one of the battery packs.

    • To open the charger block, unscrew three #1 Phillips screws.

    Adicionar comentário

  3. Spread Fixmas Cheer
    Get $12 off your purchase of $50 or more with code FIXMAS12
    Spread Fixmas Cheer
    Get $12 off your purchase of $50 or more with code FIXMAS12
    • After lifting off the bottom, the PCB is exposed, and you can lift it out of the charger block along with the battery contacts. On the PCB we find:

      • A diode to protect against reverse current.

      • An LED and resistor that is on so long as the box gets power.

      • A giant 10 Ohm resistor to slightly current-limit the charge, and across which the green led and resistor are placed -- this will therefore light up as long as significant current passes to the battery.

    Adicionar comentário

    • One of the two battery packs. To open, remove

      • Four #1 Phillips screws.

    Adicionar comentário

    • After removing the screws, turn right side up again and lift off the plastic cover, exposing 12 NiCd cells in a string, and nothing else.

    • Note that there is room on the right side for three more cells, which would make a 18V battery pack.

    • Especially cheaper makers usually have versions for 7.2V/9.6V/12/14.4/18V all using the same plastic, just more or less cells and a different motor.

    Adicionar comentário

Jasper

Member since: 02-05-2010

136 reputação

Autoria de 1 guia

Adicionar comentário

Visualizar Estatísticas:

Últimas 24 horas: 0

Últimos 7 dias: 0

Últimos 30 dias: 3

Todo: 2,129