{"id":2326,"date":"2018-08-14T08:47:53","date_gmt":"2018-08-14T07:47:53","guid":{"rendered":"https:\/\/www.puhy.cz\/blog\/?p=2326"},"modified":"2018-08-14T08:51:44","modified_gmt":"2018-08-14T07:51:44","slug":"sirenka-s-um3561-policie-hasici-sanitka","status":"publish","type":"post","link":"https:\/\/www.puhy.cz\/blog\/sirenka-s-um3561-policie-hasici-sanitka\/","title":{"rendered":"Sir\u00e9nka s UM3561 – policie, hasi\u010di, sanitka a kulomet"},"content":{"rendered":"

V nab\u00eddce internetov\u00e9ho obchodu P\u016fhy.cz se objevil integrovan\u00fd obvod, kter\u00fd byl ve sv\u00e9 dob\u011b velmi popul\u00e1rn\u00ed a st\u00e1le je sou\u010d\u00e1st\u00ed cel\u00e9 \u0159ady hra\u010dek nebo alarm\u016f. UM3561, n\u011bkdy je tak\u00e9 ozna\u010dovan\u00fd UM3561A, je gener\u00e1tor zvuku sir\u00e9n a zvuku kulometu. Pokud si chcete postavit jednoduchou sir\u00e9nku s minimem sou\u010d\u00e1stek, je tento obvod jasn\u00e1 volba.<\/p>\n

Uveden\u00fd integrovan\u00fd obvod se vyr\u00e1b\u00ed v pouzd\u0159e DIP 8 a standardn\u011b ke sv\u00e9 funkci pot\u0159ebuje jen rezistor pro nastaven\u00ed frekvence oscil\u00e1toru (jeho zm\u011bnou m\u016f\u017eete m\u011bnit „rychlost“ sir\u00e9n) a PIEZO reproduktor. Pokud by jste cht\u011bli pou\u017e\u00edt standardn\u00ed reproduktor s impedanc\u00ed 8 Ohm, budete pot\u0159ebovat je\u0161t\u011b tranzistor a rezistor pro pos\u00edlen\u00ed v\u00fdstupu.<\/p>\n

Schema zapojen\u00ed je opravdu jednoduch\u00e9:<\/p>\n

\"Jednoduch\u00e1

UM3561 schema zapojen\u00ed<\/p><\/div>\n

Jako tranzistor pro pos\u00edlen\u00ed v\u00fdstupu vyhov\u00ed b\u011b\u017en\u00fd NPN, nap\u0159\u00edklad BC547 a hodnota rezistoru R2 je 10k. Rezistor mezi v\u00fdvody OSC1 a OSC 2 R1 v\u00fdrobce doporu\u010duje kolem 300k. M\u016f\u017eete s n\u00edm experimentovat a m\u011bnit tak v\u00fdsledn\u00fd zvuk.<\/p>\n

Nezapome\u0148te, \u017ee nap\u00e1jen\u00ed obvodu je 3V, nep\u0159ipojujte ho tedy na vy\u0161\u0161\u00ed nap\u011bt\u00ed. Mo\u017enost\u00ed je odd\u011blit nap\u00e1jen\u00ed obvodu rezistorem a stabilizovat ho zenerovou diodou 3V a pln\u00e9 nap\u00e1jec\u00ed nap\u011bt\u00ed pou\u017e\u00edt pouze pro reproduktor – jak je vid\u011bt nap\u0159\u00edklad zde<\/a>.<\/p>\n

Tento obvod umo\u017e\u0148uje jednoduchou stavbu sir\u00e9nky pro d\u011btsk\u00e9 hra\u010dky nebo alarmy.<\/p>\n

Alternativy<\/h2>\n

Alternativn\u00ed obvody, kter\u00e9 by s tak mal\u00fdm po\u010dtem sou\u010d\u00e1stek umo\u017enili generovat zvuky sir\u00e9n mohou b\u00fdt nap\u0159\u00edklad UTC 1607 nebo UTC1616, p\u0159\u00edpadn\u011b dal\u0161\u00ed z t\u00e9to \u0159ady, ale ty nejsou moc b\u011b\u017en\u00e9 a nav\u00edc neumo\u017e\u0148uj\u00ed p\u0159ep\u00ednat typy sir\u00e9n, ale st\u0159\u00eddaj\u00ed je st\u00e1le do kola, co\u017e asi nen\u00ed v na\u0161ich kon\u010din\u00e1ch \u017e\u00e1douc\u00ed.<\/p>\n

Dal\u0161\u00ed mo\u017enost\u00ed jak generovat libovolnou sir\u00e9nu je pou\u017eit\u00ed Arduina. Nap\u0159\u00edklad zde je jednoduch\u00fd p\u0159\u00edklad sir\u00e9ny s Arduinem<\/a>. Pro jednoduch\u00e9 a rychl\u00e9 sestaven\u00ed ale z\u016fst\u00e1v\u00e1 UM3561 jako nep\u0159ekonateln\u00e1 mo\u017enost.<\/p>\n

V odkazech pod \u010dl\u00e1nkem naleznete i odkaz na p\u011bknou konstrukci s pos\u00edlen\u00fdm v\u00fdstupem a navr\u017een\u00fdm plo\u0161n\u00fdm spojem.<\/p>\n

Odkazy<\/h2>\n

Koupit<\/a> UM3561 na P\u016fhy.cz<\/p>\n

datasheet obvodu<\/a><\/p>\n

z\u00e1kladn\u00ed schema zapojen\u00ed<\/a><\/p>\n

sir\u00e9na s pos\u00edlen\u00fdm v\u00fdstupem<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

V nab\u00eddce internetov\u00e9ho obchodu P\u016fhy.cz se objevil integrovan\u00fd obvod, kter\u00fd byl ve sv\u00e9 dob\u011b velmi popul\u00e1rn\u00ed a st\u00e1le je sou\u010d\u00e1st\u00ed cel\u00e9 \u0159ady hra\u010dek nebo alarm\u016f. UM3561, n\u011bkdy je tak\u00e9 ozna\u010dovan\u00fd UM3561A, je gener\u00e1tor zvuku sir\u00e9n a zvuku kulometu. Pokud si chcete postavit jednoduchou sir\u00e9nku s minimem sou\u010d\u00e1stek, je tento obvod jasn\u00e1 volba. Uveden\u00fd integrovan\u00fd obvod […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,8],"tags":[],"_links":{"self":[{"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/posts\/2326"}],"collection":[{"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/comments?post=2326"}],"version-history":[{"count":9,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/posts\/2326\/revisions"}],"predecessor-version":[{"id":2336,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/posts\/2326\/revisions\/2336"}],"wp:attachment":[{"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/media?parent=2326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/categories?post=2326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.puhy.cz\/blog\/wp-json\/wp\/v2\/tags?post=2326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}