網路會員
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1ohm 只有1a流過, 用2W電阻已經夠SPEC, 2W電阻要$10一枝? 似乎未有去鴨記行個圈吧.
仲有, 成個線路根本係垃圾, R1及R2如果是可變電阻, 要在模擬DC的約1A流量工作時, 或模擬0.1C放電率時, 其總電阻量也不大於25ohm, 冇買過零件既人都知, 要有1W既可變電阻先至可以有咁細歐值, 值錢幾錢? 而果個OP-AMP在線路上是無用的, 比較了甚麼? 而OPAMP一般都係雙工作電壓, 圖3.6V多是指負電壓供電位置, 我好懷疑新新手究竟識唔識電子學.
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網路會員
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新新手, 個3.6V又點GENERATED, 又可以唔使額外洗費? 唔好忘記一個電池架都要錢. |
網路會員
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網路會員
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網路會員
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< 唔好忘記一個電池架都要錢. >
仲有車錢，密雲落雨，要買乳具，廾皮點夠！
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網路會員
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the op amp act as a negative feedback device in this situation, hence there are two major contribtion in this design: 1) Voltage amplification (minor) 2) Current following (major) since the negative input stage is "virtually ground" in a negative feedback circuit, so the battery, I1, R1 form a "virtual close loop" circuit. Hence, the current consumed and the caluculation is completely INDEPENDENT from the output device (clock). this is so call "the beauty of architecture", but you cannot realize that. from you statements, it clearly shows that you are just fighting with people with "wordings" and "false informations", but completely ignore the "accuracy" and "the beauty or art".  |
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> >intesting. I know very little on electronic. Does SH162b design need external 3.6v power supply?
>not necessary, since 3.6V can be generated by rechargable battery
Did you mean 3 extra 1.2V batteries? Or the one being measured? If the one being measured is used, then how can the measurement be accurate? Thanks. |
網路會員
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> < 唔好忘記一個電池架都要錢. >
> 仲有車錢，密雲落雨，要買乳具，廾皮點夠！
出街要食飯, 廿幾走唔甩,
係屋企玩? 租樓唔駛錢? 買樓唔駛錢?
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網路會員
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你連粒電既內阻都唔計, 一個用一粒電可以行一年既鐘, 你就去計佢既電流影響, 新新手你都幾有趣.
以2小時測試, 對於一年有8760小時, 誤差係0.022831%, 相於電阻流行的1%誤差, 與及以1OHM咁細電阻之下的接點內阻, 又或者電池內阻, 我真係唔知你分析中有冇考慮. "ACCURACY"於新新手的線路係絕對用唔著, 因為根本個線唔本身都係有鐘的內阻及秏電. 至於OPAMP既-Vs接地, 你畫漏佐, 還是畫錯掩飾?
不如你計埋粒電既自己電力流失啦....
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網路會員
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> 係屋企玩? 租樓唔駛錢? 買樓唔駛錢?
辣雞要電又要錢, 開燈又係電費, 鍚線都要錢, 最慘係你既人工唔算在內? |
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 諗深一層都唔係，喱度最近靜過鬼， 冇個小丑淡過泥，有佢笑料好發揮。 |
新進會員
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各位大哥,唔好勞氣,重唔好為嚿電芯仔搞咁多嘢.
又741又zener diode...
其實超人嘅idea校為實用.
至於"稍為讀過電子都知"一語,又真喺幾可圈可點.
至少會令人覺得樓主真喺"稍為"讀過電子....
Sorry Sorry, 如有得罸,見諒見諒. |
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我果個設計有兩個缺點, 就是不能恆流放電, 與及在截止工作後依然放電, 使電池可能求久失損.
至於只顧電池鐘秏電而不準, 實在是行外人一出手就知乜係冇. |
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Sounds like another "conclusion before edvidences" example. Select the conclusion and then collecting supportive edvidences while ignoring/excluding non-supportive edvidences. No wonder zero distrotion can be concluded without measurements. |
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係屋企玩? 租樓唔駛錢? 買樓唔駛錢?
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網路會員
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有冇用網友自己知,真理俞辨俞明.
但叻超的說話和文字真是好好笑.
大家討論氣气氛融洽,但叻超一錯又故態復盟.
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網路會員
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MICKEY算啦, 果Ｄ人冇實踐就有結論, 連做人果關都未過到, 唔好講去說服別人. |
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sorry for typos. "evidence" is mistaken as "edvidence". |
網路會員
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咁簡單道理：
老竇剩落，唔揸辣雞，改做雞頭，但係啲套要錢！
< 係屋企玩? 租樓唔駛錢? 買樓唔駛錢? >
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唔好算呀,繼續討論;繼續出醜為網上帶來歡樂.
盡情發揮你的四部曲至高心法吧！哈、哈....
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