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--></style></head><body lang=CS link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Zas tak ĂşplnÄ› celej bejt nemusĂ:-) staÄŤĂ jen po to ÄŤĂslo pĹ™ed otaznĂkem. VlastnÄ› je potĹ™eba jen to ÄŤĂslo:</p><p class=MsoNormal><a href="https://www.ebay.com/itm/193623629315">https://www.ebay.com/itm/193623629315</a></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Na textu pĹ™ed nĂm nezáleĹľĂ:</p><p class=MsoNormal><a href="https://www.ebay.com/itm/bleble/193623629315">https://www.ebay.com/itm/bleble/193623629315</a></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>RozhodnÄ› doporuÄŤuji nÄ›jak stanovit ten Isat, jinak mĹŻĹľe pĹ™i nÄ›jakĂ© blĂĹľe nedefinovanĂ© pĹ™ĂleĹľitosti nastat destrukce mÄ›niÄŤe, spotĹ™ebiÄŤe, zdroje, pĹ™ĂpadnÄ› vĂce ÄŤlenĹŻ tĂ©to skupiny najednou.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>PH</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='border:none;padding:0cm'><b>Od: </b><a href="mailto:jirka.mww@gmail.com">Jirka Mww</a><o:p></o:p></p></div><div><div><p class=MsoNormal> DĂk za odpověď, v podstatÄ› jsem postupoval podle vašà rady - viz mĹŻj pĹ™edchozĂ mail </p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>Ten link je tady celĂ˝ : </p><div><p class=MsoNormal><a href="https://www.ebay.com/itm/10A-DC-DC-6-5-60V-to-1-25-30V-Adjustable-Converter-Step-Down-Module/193623629315?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225073%26meid%3De9240c820aaa4f3aa269d23e71535241%26pid%3D100903%26rk%3D1%26rkt%3D8%26mehot%3Dnone%26sd%3D193623629315%26itm%3D193623629315%26pmt%3D1%26noa%3D1%26pg%3D2510209%26brand%3DUnbranded&_trksid=p2510209.c100903.m5276">https://www.ebay.com/itm/10A-DC-DC-6-5-60V-to-1-25-30V-Adjustable-Converter-Step-Down-Module/193623629315?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225073%26meid%3De9240c820aaa4f3aa269d23e71535241%26pid%3D100903%26rk%3D1%26rkt%3D8%26mehot%3Dnone%26sd%3D193623629315%26itm%3D193623629315%26pmt%3D1%26noa%3D1%26pg%3D2510209%26brand%3DUnbranded&_trksid=p2510209.c100903.m5276</a></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><br clear=all></p></div></div><div><div><p class=MsoNormal>so 14. 11. 2020 v 15:23 odesĂlatel Pavel Hudecek <<a href="mailto:edizon@seznam.cz">edizon@seznam.cz</a>> napsal:</p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Toho linku asi kus chybĂ.</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Ale to je jedno. DoporuÄŤuji najĂt DS od švába co na tom je a dát tam cĂvku dle nÄ›j. Velmi dĹŻleĹľitĂ© je, aby saturaÄŤnĂ proud nebyl menšà neĹľ vypĂnacĂ proud švába (i kdyby reálnĂ˝ pracovnĂ proud byl mnohem menšĂ). ZejmĂ©na pĹ™i vyššĂch napÄ›tĂch se tĂm pĹ™edejde náhodnĂ˝m destruktivnĂm jevĹŻm.</p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>Od: </b><a href="mailto:jirka.mww@gmail.com" target="_blank">Jirka Mww</a></p></div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> koupil jsem na Ebay tohle : </p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="https://www.ebay.com/itm/10A-DC-DC-6-5-60V-to-1-25-30V-Adjustable-Converter-Step-Down-Module" target="_blank">https://www.ebay.com/itm/10A-DC-DC-6-5-60V-to-1-25-30V-Adjustable-Converter-Step-Down-Module</a></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>a chtÄ›l bych to provozovat tak, Ĺľe z 50V potĹ™ebuji udÄ›lat 24V staÄŤĂ mi proud tak do 1A. . Zapojil jsem to cviÄŤnÄ› na laboratornĂ zdroj na 50V , na stavil 24V na vĂ˝stupu zatĂĹľil 28ohm, coĹľ je trochu mĂĹ neĹľ 1A a nechal asi 10 minut zapnutĂ©. PolovodiÄŤe se nehĹ™ejĂ, vstupnĂ proud je cca 0.55A, ale vinutĂ tĂ© cĂvky je ĂşplnÄ› rozpálenĂ©, ruka se na tom udrĹľet nedá, odhadoval bych to na cca 70°C. Takto to trvale v aplikaci provozovat nejde.</p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> Nemáte nÄ›kdo nÄ›jakĂ© doporuÄŤenĂ, ÄŤĂm tu cĂvku nahradit ? Je navinutá na svÄ›tle zelenĂ©m toroidu o prĹŻmÄ›rech 15 mm vnÄ›jšĂ, 7 mm vnitĹ™nĂ, výška jádra 5 mm, poÄŤet závitĹŻ asi 20, drát o prĹŻmÄ›ru 1mm, takĹľe ĂşplnÄ› miniaturnĂ cĂveÄŤka to nenĂ. Vypadá to ale, Ĺľe materiál toho toroidu je nÄ›jakĂ˝ humus. </p></div></div></div></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>