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</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'>To je dražší, než to Tiny SA </span><span style='font-size:11.0pt;font-family:"Segoe UI Emoji",sans-serif;mso-fareast-language:EN-US'>😊</span><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'>Vladimír<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Hw-list <hw-list-bounces@list.hw.cz> <b>On Behalf Of </b>Jaroslav Meduna<br><b>Sent:</b> Wednesday, March 5, 2025 10:42 AM<br><b>To:</b> 'HW-news' <hw-list@list.hw.cz><br><b>Subject:</b> RE: Jak ochránit VF vstup?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><a href="https://www.minicircuits.com/WebStore/Limiters.html">https://www.minicircuits.com/WebStore/Limiters.html</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'>napriklad na Mouser:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><a href="https://cz.mouser.com/ProductDetail/Mini-Circuits/VLM-63-2W-S%2b?qs=hWgE7mdIu5SsPTT3lqlQ7Q%3D%3D">VLM-63-2W-S+ Mini-Circuits | Mouser Česká Republika</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Hw-list <<a href="mailto:hw-list-bounces@list.hw.cz">hw-list-bounces@list.hw.cz</a>> <b>On Behalf Of </b>Vláďa Anděl<br><b>Sent:</b> Wednesday, March 5, 2025 10:07 AM<br><b>To:</b> konfera <<a href="mailto:hw-list@list.hw.cz">hw-list@list.hw.cz</a>><br><b>Subject:</b> Jak ochránit VF vstup?<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p><span lang=EN-GB style='font-family:"Times New Roman",serif'>Z Ali mi přišel tiny spectrum analyzer. Je to opravdu malinká krabička a abych na tom displeji něco přečet, musím si brát lepší brýle :-) Nejdřív jsem nadával, že to má spoustu funkcí a není k tomu návod, ale pak jsem kouknul na jejich web a všechno tam je. </span><span lang=EN-GB><o:p></o:p></span></p><p><span lang=EN-GB style='font-family:"Times New Roman",serif'>V návodu píšou, že vstup (100 KHz až 1,5 GHz) snese max. 10dBm a stejnosměrných 10V. Je k tomu prutová anténa a u ní píšou dávat si velký pozor a o nic s tím neškrtnout. Čím se dá takový vstup ochránit? Dvě diody proti sobě, ale jaké? Snad všechny hodně rychlé diody jsou schottky a tady bych potřeboval, aby ta dioda do půl voltu pokud možno nevedla. Dvě ledky proti sobě? Ale ty asi budou mít velkou kapacitu. Nebo připojit na vstup třeba tenhle zesilovač </span><span lang=EN-GB><o:p></o:p></span></p><p><span lang=EN-GB style='font-family:"Times New Roman",serif'><a href="https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78">https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78</a> </span><span lang=EN-GB><o:p></o:p></span></p><p><span lang=EN-GB style='font-family:"Times New Roman",serif'>a doufat, že kdyžtak odejde jen ten zesilovač?</span><span lang=EN-GB><o:p></o:p></span></p><p><span lang=EN-GB style='font-family:"Times New Roman",serif'>Anděl</span><span lang=EN-GB><o:p></o:p></span></p></div></body></html>