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	<title>Electronica - scheme electronice &#187; utile rf</title>
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	<link>http://www.scheme.dring.ro</link>
	<description>Electronica - amplificatoare audio, emitatoare, surse tensiune, antene, electronica hobby diy</description>
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		<title>Antena telescopica activa de banda larga</title>
		<link>http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/</link>
		<comments>http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/#comments</comments>
		<pubDate>Sun, 22 Jan 2012 17:37:15 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[amplificator radio]]></category>
		<category><![CDATA[antene]]></category>
		<category><![CDATA[casa]]></category>
		<category><![CDATA[Radio]]></category>
		<category><![CDATA[utile rf]]></category>
		<category><![CDATA[antena telescopica]]></category>
		<category><![CDATA[BFG65]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/?p=232</guid>
		<description><![CDATA[Majoritatea amplificatoarelor VHF / UHF pentru antene simetrice ( cum sunt dipolul deschis sau inchis ) au la intrare un balun ( balanced to unbalanced &#8211; transformator de simetrizare simetric-asimetric). Un balun este un dispozitiv inductiv care converteste semnalul simetric (echilibrat) de RF intr-un semnal asimetric (neechilibrat) care se poate aplica in baza transzistorului. Din [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/5/antena-dipol-deschis/' rel='bookmark' title='Permanent Link: Antena dipol deschis'>Antena dipol deschis</a> <small>Antena dipol deschis este cea mai folosita de radio amatorii...</small></li>
<li><a href='http://www.scheme.dring.ro/67/antena-dipol-inchis/' rel='bookmark' title='Permanent Link: Antena dipol inchis'>Antena dipol inchis</a> <small>Dipolul inchis radiaza in forma numarului 8 si are un...</small></li>
<li><a href='http://www.scheme.dring.ro/64/antena-directiva-yagi-3-elementi/' rel='bookmark' title='Permanent Link: Antena directiva Yagi 3 elementi'>Antena directiva Yagi 3 elementi</a> <small>Aceasta antena se poate folosi atat pt emisie cat si...</small></li>
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		<title>Codor Stereo BH1415</title>
		<link>http://www.scheme.dring.ro/141/codor-stereo-bh1415/</link>
		<comments>http://www.scheme.dring.ro/141/codor-stereo-bh1415/#comments</comments>
		<pubDate>Sun, 15 Jan 2012 16:06:39 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[utile rf]]></category>
		<category><![CDATA[BH1415]]></category>
		<category><![CDATA[codor stereo]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/141/codor-stereo-bh1415/</guid>
		<description><![CDATA[Aceasta este ultima schema a codorului stereo dotat cu circuitul integrat BH1415 de la RHOM ce include multe functionalitati intr-un pachet mic. Vine cu pre-emphasis, limitator pt ca muzica sa fie transmisa la acelasi nivel audio, filtru trece jos ce blocheaza frecventele peste 15KHz si previne orice interferenta RF si codor stereo bazat pe cristal [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/364/schema-codor-stereo-simplu/' rel='bookmark' title='Permanent Link: Schema codor stereo simplu'>Schema codor stereo simplu</a> <small>Aceasta schema de codor stereo este foarte simpla insa asigura...</small></li>
<li><a href='http://www.scheme.dring.ro/145/codor-stereo-njm2035/' rel='bookmark' title='Permanent Link: Codor stereo NJM2035'>Codor stereo NJM2035</a> <small>Codorul stereo consta din 3 etaje : pre-emphasis, codor digital...</small></li>
<li><a href='http://www.scheme.dring.ro/109/codor-stereo/' rel='bookmark' title='Permanent Link: Codor stereo'>Codor stereo</a> <small>Acest codor stereo va asigura sunetul clar de care aveati...</small></li>
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		<title>Aparat indicator de semnal radio rf</title>
		<link>http://www.scheme.dring.ro/62/aparat-indicator-de-semnal-radio-rf/</link>
		<comments>http://www.scheme.dring.ro/62/aparat-indicator-de-semnal-radio-rf/#comments</comments>
		<pubDate>Thu, 29 Dec 2011 12:41:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[utile rf]]></category>
		<category><![CDATA[masuratori]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/62/aparat-indicator-de-semnal-radio-rf/</guid>
		<description><![CDATA[Acest montaj este folosit pt reglarea antenelor si a instalatiilor de emisie. Din potentiometrul P se regleaza sensibilitatea aparatului de masura. Se poate conecta o pereche de casti cu impendata mai mare de 2.2 k si astfel se poate asculta si informatia transmisa. Acest montaj trebuie introdus intr-o cutie metalica prevazuta cu o mufa rf [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/60/sonda-rf-aparat-masurare-camp-si-tensiune-rf/' rel='bookmark' title='Permanent Link: Sonda rf, aparat masurare camp si tensiune rf'>Sonda rf, aparat masurare camp si tensiune rf</a> <small>Cu aceasta sonda puteti regla puterea de iesire a unui...</small></li>
<li><a href='http://www.scheme.dring.ro/58/reflectometru/' rel='bookmark' title='Permanent Link: Reflectometru'>Reflectometru</a> <small>Reflectometrul este un instrument de masura si reglare indispensabil pt...</small></li>
<li><a href='http://www.scheme.dring.ro/370/indicator-al-nivelului-de-varf/' rel='bookmark' title='Permanent Link: Indicator al nivelului de varf'>Indicator al nivelului de varf</a> <small>Indicatorul semnalizeaza, prin intermediul a doua LED-uri, depasirea unei valori...</small></li>
</ol>]]></description>
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		<title>Circuit VOX simplu</title>
		<link>http://www.scheme.dring.ro/251/circuit-vox-simplu/</link>
		<comments>http://www.scheme.dring.ro/251/circuit-vox-simplu/#comments</comments>
		<pubDate>Wed, 28 Dec 2011 12:28:41 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[utile audio]]></category>
		<category><![CDATA[utile rf]]></category>
		<category><![CDATA[BC517]]></category>
		<category><![CDATA[BC557B]]></category>
		<category><![CDATA[comutare audio]]></category>
		<category><![CDATA[comutatoare]]></category>
		<category><![CDATA[releu]]></category>
		<category><![CDATA[VOX]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/?p=251</guid>
		<description><![CDATA[VOX-ul este un comutator comandat prin voce, utilizat adesea la microfoane, in locul clasicului buton de comutare a acestuia. Varianta de vox descrisa aici poate fi conectata la aproape orice tip de echipament audio care are o mufa de difuzor extern. Pragul de actionare este stabilit de potentiometrul de volum al amplificatorului AF care comanda [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/332/emitator-de-baza-in-infrarosu/' rel='bookmark' title='Permanent Link: Emitator de baza in infrarosu'>Emitator de baza in infrarosu</a> <small>Emitatorul este destinat folosirii impreuna cu acest receptor in infrarosu....</small></li>
<li><a href='http://www.scheme.dring.ro/249/circuit-comanda-50-75-ohmi/' rel='bookmark' title='Permanent Link: Circuit comanda 50 / 75 ohmi'>Circuit comanda 50 / 75 ohmi</a> <small>Circuitul de comanda pt 50/75 &Omega; are drept componenta de...</small></li>
<li><a href='http://www.scheme.dring.ro/309/scaner-pentru-preamplificator/' rel='bookmark' title='Permanent Link: Scaner pentru preamplificator'>Scaner pentru preamplificator</a> <small>Acest circuit scaneaza toate intrarile preamplificatorului pentru a depista unde...</small></li>
</ol>]]></description>
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		<item>
		<title>Masurator camp rf</title>
		<link>http://www.scheme.dring.ro/28/masurator-camp-rf/</link>
		<comments>http://www.scheme.dring.ro/28/masurator-camp-rf/#comments</comments>
		<pubDate>Fri, 23 Dec 2011 11:28:09 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[utile rf]]></category>
		<category><![CDATA[masuratori]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/2008/01/18/masurator-camp-rf/</guid>
		<description><![CDATA[Cu ajutorul acestui montaj puteti masura puterea radiata din antena care este folosita efectiv. Daca puteti masura campul de energie radiata puteti regla cu usurinta emitatorul pt maximum de putere. Antena este bine sa fie taiata la frecventa, lunginea ei nefiind criticala. Reglare: plasam masuratorul la 5 m de emitator ( antena ), se regleaza [...]


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<li><a href='http://www.scheme.dring.ro/351/masurator-putere-camp-rf/' rel='bookmark' title='Permanent Link: Masurator putere camp rf'>Masurator putere camp rf</a> <small>Un aparat de masurare a intensitatii campului rf este un...</small></li>
<li><a href='http://www.scheme.dring.ro/62/aparat-indicator-de-semnal-radio-rf/' rel='bookmark' title='Permanent Link: Aparat indicator de semnal radio rf'>Aparat indicator de semnal radio rf</a> <small>Acest montaj este folosit pt reglarea antenelor si a instalatiilor...</small></li>
</ol>]]></description>
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