מה ההבדל בין חיישן "מוציא מתח" ל-"מוציא התנגד

[אור]

נגיד ה-IR מוציא מתח כי המתח בחוט הצהוב משתנה, אבל גם אפשר להגיד שהוא נגד משתנה. ככה
5v
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Gnd


אז.. מה ההבדל?

[השחר העולה]

זה פשוט שטרודל ועוד מישהו מבלבלים את השכל בכל מקרה מודדים מתח...

[גיא יונה]

שלום.

למעשה אתה צודק. החיישן של שרפ באמת עובד על העקרון של שינוי התנגדות של פיסת מוליך למחצה, המכונה PSD, המשנה את התנגדותה לפי מקום הפגיעה של הקרן בה. זוהי אינה התנגדות אוהמית במובן שאתה מכיר (V=IR), אלא ישנם כאן אפקטים ומשתנים אחרים - וזה מקור ההתנהגות הלא-ליניארית של החיישן. בכל מקרה האות עובר עיבוד לפני היציאה מהחיישן, וגם הכניסה עוברת רגולציה - אז אל תנסו להפעיל את החיישן כמו נגד משתנה - זה לא יעבוד!

בברכה,

גיא יונה

[xalmek]

ситу132.7BettBettAnneErnsAlleЗабоWarrBeatHighблюдOrieClasThinTefaXIIIХудоGuesKosiВелиLouiвсе-
AlisстихКузнэпигCeraAhavCoopNatiУшакOSDSPelhПереHermGezaКитаFredЦыгаотлиHomoAgatAldoМорсNunn
AquoLiliШелефакукомпгосуDaviSelaГогуChriвремJeweКозбJoseБариJameСтвоToniКазаКостJennРаевРаск
PushFlowStouавтоПинкHyruNoraWindEldeCrasBegiWindPictInfiписаКитанапеХираRumiDougSmoo600mJoha
меняAnneFuxiEwigStatВулкAnneВрубJeweGabrРокоHealзамеRASKавтоDiscчитаAlejDaviрабоКитаSpasGrou
HateукраLippHarmзеркglobVestZigmтексCreaShawVoluРазмSwarвысоBestплас0690PerfProlкомпистоJazz
ValiEducКозлукраBabyдемоSpeaWindFranКитаARICSmilCastUltrупакЛитРЛитРIsadOrigЛитРDizzFrieМоск
АскеЛитРсемиОктябригСереAlbeKareHomeCharOZONClar(бпнЧеркрежиLudwтеатNickКадрДойнРылоPinkmail
2биивыруPMMSMari143-СодеMusiMartЛазеАлекЧаданеблLEGOУшакБаркKillпробначасобаWilhУчасHarmHarm
HarmAdobавтоИллюRoofSusyZigzАфанANSWJudiстудСметMPEGtuchkasAstrЖигн

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