{"id":313,"date":"2014-08-17T09:50:58","date_gmt":"2014-08-17T07:50:58","guid":{"rendered":"http:\/\/jvelektronika.cz\/?page_id=313"},"modified":"2015-11-27T21:55:03","modified_gmt":"2015-11-27T20:55:03","slug":"blikac-s-led","status":"publish","type":"page","link":"https:\/\/jvelektronika.cz\/?page_id=313","title":{"rendered":"Blika\u010d s led"},"content":{"rendered":"

BLIKA\u010c S DV\u011aMI LED<\/h2>\n
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Blika\u010d s led<\/div>\n
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13.03.2012 19:46<\/ins>Toto sch\u00e9ma nen\u00ed p\u0159evzat\u00e9 z jin\u00e9ho webu.Dal\u0161\u00ed \u0161\u00ed\u0159en\u00ed tohoto sch\u00e9matu je zak\u00e1z\u00e1no!!!<\/p>\n
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V\u00edc<\/div>\n<\/div>\n

Blika\u010d se dv\u011bmi led st\u0159\u00eddav\u011b blikajic\u00edmi<\/h3>\n

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Na konci str\u00e1nky si m\u016f\u017eete prohl\u00e9dnout video.<\/i><\/p>\n

Nov\u00e9 video pod n\u00e1zvem BLIKA\u010c SE DV\u011aMI LED DIODAMI REVIZE 1.2<\/p>\n

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N\u00e1vrh na DPS vlo\u017een pod sch\u00e9matem.<\/p>\n

Obvod pracuje jednodu\u0161e: Na kondenz\u00e1tory je p\u0159ivedeno nap\u011bt\u00ed a tranzistory se otev\u00edraj\u00ed a zav\u00edraj\u00ed, dle toho na kter\u00fd je p\u0159ivedeno nap\u011bt\u00ed a podle toho se rozsv\u011bc\u00ed bu\u010f D1, nebo D2.<\/p>\n

Funguje jako astabiln\u00ed klopn\u00fd obvod ( AKO ), ten se p\u0159ekl\u00e1p\u00ed . V tomto zapojen\u00ed je siln\u00e1 kladn\u00e1 vazba p\u0159i pou\u017eit\u00ed kondenz\u00e1tor\u016f.<\/p>\n

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Funguje jako klopn\u00fd obvod.<\/p>\n

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\"blika\u010d-s-led-ok<\/a><\/p>\n

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Rozpis sou\u010d\u00e1stek :<\/strong><\/span><\/p>\n

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Poku\u010f chcete aby led diody blikaly pomaleji, tak\u00a0 rezistory R2 a R3 volte 22K<\/strong><\/p>\n

Nov\u00e9 video pod n\u00e1zvem BLIKA\u010c SE DV\u011aMI LED DIODAMI REVIZE 1.2<\/p>\n

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R1 a R4 = 100\u2126<\/p>\n

R2 a R3 = 3K3<\/p>\n

D1 a D2 = 3mm Led dioda ( Lze pou\u017e\u00edt i 5mm a r\u016fzn\u00e9 barvy v\u010detn\u011b vysocesv\u00edtiv\u00e9 led ).<\/p>\n

C1 a C2 = 47uF 10V ( lze pou\u017e\u00edt i kondenz\u00e1tory 100uF ). \u010c\u00edm v\u011bt\u0161\u00ed kapacita, t\u00edm je blik\u00e1n\u00ed pomalej\u0161\u00ed.<\/p>\n

T1 a T2 = BC547 ( NPN )<\/p>\n

Nap\u00e1jen\u00ed = 4,5V max. ( Umax=4,5V )<\/p>\n

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\"DSC_0453\"<\/a><\/p>\n

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N\u00e1vrh na DPS – Pohled ze strany spoj\u016f.<\/h5>\n

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\"blik<\/a><\/p>\n

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Za p\u0159\u00edpadn\u00e9 \u0161kody na majetku, nebo ujm\u011b na zdrav\u00ed nenesu \u017e\u00e1dnou odpov\u011bdnost!<\/p>\n

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