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Velleman DVM850BL Digital Multimeter Teardown

소개

This teardown shows the internal circuitry of a digital multimeter.

필요한 것

  1. Velleman DVM850BL Digital Multimeter Teardown, Removing Leads: 1 단계, 이미지 1/1

    • Remove lead connectors from front panel.

    편집

  2. Velleman DVM850BL Digital Multimeter Teardown, Remove Back Casing Screws: 2 단계, 이미지 1/3 Velleman DVM850BL Digital Multimeter Teardown, Remove Back Casing Screws: 2 단계, 이미지 2/3 Velleman DVM850BL Digital Multimeter Teardown, Remove Back Casing Screws: 2 단계, 이미지 3/3

    • Turn over the DVM and unscrew the two screws using a J1 bit.

    편집

  4. Velleman DVM850BL Digital Multimeter Teardown, Battery and PCB Screw Removal: 3 단계, 이미지 1/3 Velleman DVM850BL Digital Multimeter Teardown, Battery and PCB Screw Removal: 3 단계, 이미지 2/3 Velleman DVM850BL Digital Multimeter Teardown, Battery and PCB Screw Removal: 3 단계, 이미지 3/3

    • Remove battery by gently disconnecting it from connector.

    • Remove three screws using J1 bit.

    편집

  5. Velleman DVM850BL Digital Multimeter Teardown, PCB Removal: 4 단계, 이미지 1/2 Velleman DVM850BL Digital Multimeter Teardown, PCB Removal: 4 단계, 이미지 2/2

    • Remove PCB by gently pulling it away from the back encasing.

    • Microprocessor

    • Continuity Check Speaker

    • Fuse

    • 9 V Battery Connector

    편집

  6. Velleman DVM850BL Digital Multimeter Teardown, Complete The Teardown: 5 단계, 이미지 1/3 Velleman DVM850BL Digital Multimeter Teardown, Complete The Teardown: 5 단계, 이미지 2/3 Velleman DVM850BL Digital Multimeter Teardown, Complete The Teardown: 5 단계, 이미지 3/3

    • Remove the knob and buttons from the front grey casing.

    • The measurement knob uses two ball bearings that allows the knob to rotate. These bearings are small and easy to lose.

    • Backlight Toggle Button

    • Measurement Hold Button

    • LCD Plastic Cover

    • Measurement Select Knob

    • Measurement Select Knob Ball Bearings

    • Success! You have finished tearing down the multimeter.

    편집
결승점

작성자

다른 기여자 2명과 함께

Michael

회원 가입일: 01/23/14

362 평판

안내서 2개 작성하였습니다

배지: 8

배지 +5개 더

팀

Cal Poly, Team 10-32, Maness Winter 2014 Cal Poly, Team 10-32, Maness Winter 2014 회원

CPSU-MANESS-W14S10G32

4 회원들

안내서 6개 작성하였습니다

댓글 2개

Don't take the contacts out of the rotary dial. It's very easy to forget where they go

Oliver Watson - 답글

This web page seems very helpful. However is it necessary to remove the micro processor or front knobs and buttons if all is working fine? What meter do you use to check the fuse? This one when the battery is changed? LOL And why does the print and photos change size when I try to scroll down the page after I reset it to 100 % ? Am I using Windows 10 wrong? Thanks

jaystuarthenderson - 답글

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