Timer 5 sekundi

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Ako se koristi relej na izlazu, potrebno je staviti paralelno diodu na špuli da ne bi došlo do uništenja BC327.</div> <div>      Ako je ulaz prisutan dulje od perioda timera vrijeme se automatski ponavlja uz minimalnu pauzu od 40us. Ako se koristi relej na izlazu, tada se pauza neće opaziti u radu releja. Upotrebom većeg kondenzatora u oscilatoru (0,22uF), npr. 1uF se može dobiti i vrijeme od 2-20 sekundi. Za oscilatorski kondenzator treba koristiti blok ili tantal kondenzatore. Grubo podešavanje dužine trajanja vremena timera se može vršiti na selektoru 'TIME' gdje se pomoću dvije brike može mijenjati maksimalno vrijeme. Dva odabrana vremena na selektoru se zbrajaju. Veće vrijeme se može dobiti dodavanjem još jednog CD4040. Clock mu treba spojiti na pin 1 postojećeg, a reset skupa sa resetom postojećeg. Nakon toga dobivate mogućnost izbora 8,16,32,64,128,256,1024,2048,4096,80192,16384,32768 sekundi, a sa povećanjem kondenzatora 0.22uF na 1 uF krajnje vrijeme je 148945 sekundi (41 sat).</div> <div>      Sklop može raditi na napajanju 5..12Vdc. Cijena sklopa bez vanjskog potenciometra je manja od 10kn. Prednost sklop je u nekorištenju elektrolita koji imaju široku toleranciju, promjenjivost vrijednosti sa vremenom i struju gubitaka ovisnu o temperaturi.</div> </td> </tr></table></body>