Jie-Han Chen
    • Create new note
    • Create a note from template
      • Sharing URL Link copied
      • /edit
      • View mode
        • Edit mode
        • View mode
        • Book mode
        • Slide mode
        Edit mode View mode Book mode Slide mode
      • Customize slides
      • Note Permission
      • Read
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Write
        • Only me
        • Signed-in users
        • Everyone
        Only me Signed-in users Everyone
      • Engagement control Commenting, Suggest edit, Emoji Reply
    • Invite by email
      Invitee
    • Publish Note

      Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

      Your note will be visible on your profile and discoverable by anyone.
      Your note is now live.
      This note is visible on your profile and discoverable online.
      Everyone on the web can find and read all notes of this public team.
      See published notes
      Unpublish note
      Please check the box to agree to the Community Guidelines.
      View profile
    • Commenting
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
      • Everyone
    • Suggest edit
      Permission
      Disabled Forbidden Owners Signed-in users Everyone
    • Enable
    • Permission
      • Forbidden
      • Owners
      • Signed-in users
    • Emoji Reply
    • Enable
    • Versions and GitHub Sync
    • Note settings
    • Engagement control
    • Transfer ownership
    • Delete this note
    • Save as template
    • Insert from template
    • Import from
      • Dropbox
      • Google Drive
      • Gist
      • Clipboard
    • Export to
      • Dropbox
      • Google Drive
      • Gist
    • Download
      • Markdown
      • HTML
      • Raw HTML
Menu Note settings Versions and GitHub Sync Sharing URL Create Help
Create Create new note Create a note from template
Menu
Options
Engagement control Transfer ownership Delete this note
Import from
Dropbox Google Drive Gist Clipboard
Export to
Dropbox Google Drive Gist
Download
Markdown HTML Raw HTML
Back
Sharing URL Link copied
/edit
View mode
  • Edit mode
  • View mode
  • Book mode
  • Slide mode
Edit mode View mode Book mode Slide mode
Customize slides
Note Permission
Read
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Write
Only me
  • Only me
  • Signed-in users
  • Everyone
Only me Signed-in users Everyone
Engagement control Commenting, Suggest edit, Emoji Reply
  • Invite by email
    Invitee
  • Publish Note

    Share your work with the world Congratulations! 🎉 Your note is out in the world Publish Note

    Your note will be visible on your profile and discoverable by anyone.
    Your note is now live.
    This note is visible on your profile and discoverable online.
    Everyone on the web can find and read all notes of this public team.
    See published notes
    Unpublish note
    Please check the box to agree to the Community Guidelines.
    View profile
    Engagement control
    Commenting
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    • Everyone
    Suggest edit
    Permission
    Disabled Forbidden Owners Signed-in users Everyone
    Enable
    Permission
    • Forbidden
    • Owners
    • Signed-in users
    Emoji Reply
    Enable
    Import from Dropbox Google Drive Gist Clipboard
       owned this note    owned this note      
    Published Linked with GitHub
    Subscribed
    • Any changes
      Be notified of any changes
    • Mention me
      Be notified of mention me
    • Unsubscribe
    Subscribe
    # 捕蚊燈疑問集 1. 捕蚊燈的電路為什麼需要 整流 跟 倍壓電路? >因為AC 110V很難在瞬間電死蚊子,所以需要把電壓放大,瞬間的電流值也會跟著變大(R為定值,V變大I也會跟著變大),蚊子就會瞬間GG了[name=Zhang Jiawei] 2. 齊納二極體加上兩個電阻所構成的電路主要用途是為了降壓讓開發版得以測量電壓嗎? 對整個工作流程來說,我的理解是電柵一般時候等同斷路,所以我們利用電阻,齊納二極體做了並聯電路之後,~~電柵電流就可以通過並連電流~~ **Zener的用途是防止突波,平時狀況下不太作動** 我們 Vsense 量測到的便會是 2K 歐姆的電壓差。如果電到蚊子的時候,~~並聯電路~~ **整個電路**不會有電流通過(電柵短路)所以量測到的 Vsense = 0? 所以藉由量測到的電壓變化,來測量是否有電到蚊子 >是ㄉ[name=Zhang Jiawei] 3. 為什麼齊納二極體所構成的電路使用的電阻是 1M, 2K 歐姆的電阻?(是不是跟量測電壓數值大小有關?Hackpad 上面寫 2V 就會被判斷為低電壓 還是因為這是為了計算不要讓 Pin 腳的電壓高過工作電壓? >True,同時大的電阻也可以使我們拉到控制板的分壓電路被分到的總電流變少,使我們整個電路的總電壓差能夠維持在高壓[name=Zhang Jiawei] 4. 可不可以再請教一次齊納二極體的功用是什麼? 今天有說過齊納二極體在這裡主要是防突波,但是為什麼可以防突波?瞬間大電壓 >因為在開關瞬間通路的時候,有可能發生(尤其在傳統的硬式開關)電荷快速大量流入(電流的定義:每單位時間所流入的電荷數),瞬間造成的大電壓有機率會造成電路的損毀,Zener在這邊就是為了防止端電壓大於我們的工作電壓。[name=Zhang Jiawei] >嘛就是個以防萬一的概念吧XD [name=Zhang Jiawei] 5. 測量電壓的時候,主要是測量電壓變成 0 的時候,但是電壓為什麼會變成 0? 齊納二極體那條電路會短路嗎?(原本圖上是畫電柵會變成短路 >跟Zener沒啥關係喔! >筆記上面有劃記到,實際上可以分成這樣: >[點我點我]("http://falstad.com/circuit/circuitjs.html?cct=$+1+0.000005+10.20027730826997+50+5+43%0Av+96+384+96+112+0+0+40+5+0+0+0.5%0Aw+96+112+272+112+0%0Aw+272+112+272+176+0%0Aw+272+176+208+176+0%0Aw+208+176+208+240+0%0Aw+272+176+368+176+0%0Ab+207+131+118+86+0%0Ax+128+116+196+119+0+24+Circuit%0Aw+96+384+272+384+0%0Ab+204+344+121+405+0%0Ax+127+381+195+384+0+24+Circuit%0Aw+208+272+208+320+0%0Aw+208+320+272+320+0%0Aw+272+320+272+384+0%0Aw+272+320+368+320+0%0Ar+368+176+368+240+0+1000000%0Ar+368+240+368+320+0+2000%0Az+448+320+448+240+1+0.805904783+5.6%0Aw+368+240+448+240+0%0Aw+368+320+448+320+0%0Aw+448+240+496+240+0%0A210+496+240+560+240+0+10240%0A") >中間斷開的地方是電死蚊子的地方,你可以看到,如果蚊子上去的話,右邊的電路兩端的電壓會瞬間等壓差 = 0V 造成近似瞬間短路的情形[name=Zhang Jiawei] 6. 今天有查到 pin 2 port 是代號 1 的 interrupt 腳位,這在哪裡可以查到呢? >看晶片號查Datasheet,剛好7688 duo的微控制器是跟Arduino leonardo是同一塊,所以可以兼用[name=Zhang Jiawei] >https://www.arduino.cc/en/Main/ArduinoBoardLeonardo >寫在下面喔~ 7. 如果接了 110V - 5V 降壓模組之後,將捕蚊燈的電供電給板子後,我們如果接上 USB 燒 code, 查看 Serial 會有影響嗎? >原則上共電源這件事本身就有點危險就是了,電壓較高的那一邊會朝較低的那一側流電流(有壓差就有電流)[name=Zhang Jiawei] >雖然在理想狀況下,兩邊等5V的時候沒什麼影響,但不管是USB Port或者是降壓模組都不是理想5V,在有許多的變項的狀況下,務必多加注意就是了[name=Zhang Jiawei] >或是準備一個沒有人要用的電腦(ry[name=Zhang Jiawei]

    Import from clipboard

    Paste your markdown or webpage here...

    Advanced permission required

    Your current role can only read. Ask the system administrator to acquire write and comment permission.

    This team is disabled

    Sorry, this team is disabled. You can't edit this note.

    This note is locked

    Sorry, only owner can edit this note.

    Reach the limit

    Sorry, you've reached the max length this note can be.
    Please reduce the content or divide it to more notes, thank you!

    Import from Gist

    Import from Snippet

    or

    Export to Snippet

    Are you sure?

    Do you really want to delete this note?
    All users will lose their connection.

    Create a note from template

    Create a note from template

    Oops...
    This template has been removed or transferred.
    Upgrade
    All
    • All
    • Team
    No template.

    Create a template

    Upgrade

    Delete template

    Do you really want to delete this template?
    Turn this template into a regular note and keep its content, versions, and comments.

    This page need refresh

    You have an incompatible client version.
    Refresh to update.
    New version available!
    See releases notes here
    Refresh to enjoy new features.
    Your user state has changed.
    Refresh to load new user state.

    Sign in

    Forgot password

    or

    By clicking below, you agree to our terms of service.

    Sign in via Facebook Sign in via Twitter Sign in via GitHub Sign in via Dropbox Sign in with Wallet
    Wallet ( )
    Connect another wallet

    New to HackMD? Sign up

    Help

    • English
    • 中文
    • Français
    • Deutsch
    • 日本語
    • Español
    • Català
    • Ελληνικά
    • Português
    • italiano
    • Türkçe
    • Русский
    • Nederlands
    • hrvatski jezik
    • język polski
    • Українська
    • हिन्दी
    • svenska
    • Esperanto
    • dansk

    Documents

    Help & Tutorial

    How to use Book mode

    Slide Example

    API Docs

    Edit in VSCode

    Install browser extension

    Contacts

    Feedback

    Discord

    Send us email

    Resources

    Releases

    Pricing

    Blog

    Policy

    Terms

    Privacy

    Cheatsheet

    Syntax Example Reference
    # Header Header 基本排版
    - Unordered List
    • Unordered List
    1. Ordered List
    1. Ordered List
    - [ ] Todo List
    • Todo List
    > Blockquote
    Blockquote
    **Bold font** Bold font
    *Italics font* Italics font
    ~~Strikethrough~~ Strikethrough
    19^th^ 19th
    H~2~O H2O
    ++Inserted text++ Inserted text
    ==Marked text== Marked text
    [link text](https:// "title") Link
    ![image alt](https:// "title") Image
    `Code` Code 在筆記中貼入程式碼
    ```javascript
    var i = 0;
    ```
    var i = 0;
    :smile: :smile: Emoji list
    {%youtube youtube_id %} Externals
    $L^aT_eX$ LaTeX
    :::info
    This is a alert area.
    :::

    This is a alert area.

    Versions and GitHub Sync
    Get Full History Access

    • Edit version name
    • Delete

    revision author avatar     named on  

    More Less

    Note content is identical to the latest version.
    Compare
      Choose a version
      No search result
      Version not found
    Sign in to link this note to GitHub
    Learn more
    This note is not linked with GitHub
     

    Feedback

    Submission failed, please try again

    Thanks for your support.

    On a scale of 0-10, how likely is it that you would recommend HackMD to your friends, family or business associates?

    Please give us some advice and help us improve HackMD.

     

    Thanks for your feedback

    Remove version name

    Do you want to remove this version name and description?

    Transfer ownership

    Transfer to
      Warning: is a public team. If you transfer note to this team, everyone on the web can find and read this note.

        Link with GitHub

        Please authorize HackMD on GitHub
        • Please sign in to GitHub and install the HackMD app on your GitHub repo.
        • HackMD links with GitHub through a GitHub App. You can choose which repo to install our App.
        Learn more  Sign in to GitHub

        Push the note to GitHub Push to GitHub Pull a file from GitHub

          Authorize again
         

        Choose which file to push to

        Select repo
        Refresh Authorize more repos
        Select branch
        Select file
        Select branch
        Choose version(s) to push
        • Save a new version and push
        • Choose from existing versions
        Include title and tags
        Available push count

        Pull from GitHub

         
        File from GitHub
        File from HackMD

        GitHub Link Settings

        File linked

        Linked by
        File path
        Last synced branch
        Available push count

        Danger Zone

        Unlink
        You will no longer receive notification when GitHub file changes after unlink.

        Syncing

        Push failed

        Push successfully