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	<title>Electronica - scheme electronice &#187; Hobby</title>
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	<link>http://www.scheme.dring.ro</link>
	<description>Electronica - amplificatoare audio, emitatoare, surse tensiune, antene, electronica hobby diy</description>
	<lastBuildDate>Mon, 06 Feb 2012 22:41:12 +0000</lastBuildDate>
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		<title>Tahometru digital bicicleta</title>
		<link>http://www.scheme.dring.ro/360/tahometru-digital-bicicleta/</link>
		<comments>http://www.scheme.dring.ro/360/tahometru-digital-bicicleta/#comments</comments>
		<pubDate>Mon, 06 Feb 2012 22:41:12 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Hobby]]></category>
		<category><![CDATA[Masura/control]]></category>
		<category><![CDATA[4011]]></category>
		<category><![CDATA[4026]]></category>
		<category><![CDATA[circuite bicicleta]]></category>
		<category><![CDATA[releu reed]]></category>
		<category><![CDATA[scheme bicicleta]]></category>

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		<description><![CDATA[Acest tahometru digital pentru bicicleta foloseste doua relee Reed pt a obtine informatii despre viteza bicicletei. Releele Reed sunt montate aproape de janta rotii bicicletei in locul prin care trec magnetii permanenti. Tahometrul functioneaza conform principiului: impulsurile create de contactele Reed sunt numarate intr-un anumit interval de timp. Masuratoarea efectuata este apoi afisata si reprezinta [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/349/regulator-viteza-motor-cc/' rel='bookmark' title='Permanent Link: Regulator viteza motor cc'>Regulator viteza motor cc</a> <small>Acest regulator de viteza a unui motor cc foloseste un...</small></li>
<li><a href='http://www.scheme.dring.ro/230/control-digital-al-volumului/' rel='bookmark' title='Permanent Link: Control digital al volumului'>Control digital al volumului</a> <small>Inima acestui control de volum digital (numeric) este circuitul integrat...</small></li>
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		<title>Led multicolor RGB</title>
		<link>http://www.scheme.dring.ro/403/led-multicolor-rgb/</link>
		<comments>http://www.scheme.dring.ro/403/led-multicolor-rgb/#comments</comments>
		<pubDate>Sat, 07 Jan 2012 14:53:13 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Hobby]]></category>
		<category><![CDATA[BC547B]]></category>
		<category><![CDATA[led multicolor]]></category>
		<category><![CDATA[schema leduri]]></category>
		<category><![CDATA[TLC272]]></category>

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		<description><![CDATA[LED multicolor: un LED care poate produce toate culorile vizibile. Este tipul Everlight 339-1 VRKG-BBW. De fapt, acesta consta din patru leduri intr-o capsula: unul rosul, unul verde si doua albastre. Cand aceste LED-uri sunt comandate la diferite straluciri, se pot obtine toate culorile vizibile si albul. Circuitul descris trece LED-urile in toate culorile si [...]


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<li><a href='http://www.scheme.dring.ro/878/supraveghere-tensiune-acumulator-auto/' rel='bookmark' title='Permanent Link: Supraveghere tensiune acumulator auto'>Supraveghere tensiune acumulator auto</a> <small>Starea acumulatorului este de mare importanta pt functionarea autovehiculelor si...</small></li>
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		<title>Microfon pentru infrarosu</title>
		<link>http://www.scheme.dring.ro/273/microfon-pentru-infrarosu/</link>
		<comments>http://www.scheme.dring.ro/273/microfon-pentru-infrarosu/#comments</comments>
		<pubDate>Wed, 04 Jan 2012 14:07:49 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Audio]]></category>
		<category><![CDATA[diverse]]></category>
		<category><![CDATA[Hobby]]></category>
		<category><![CDATA[Masura/control]]></category>
		<category><![CDATA[utile audio]]></category>
		<category><![CDATA[BP104]]></category>
		<category><![CDATA[BPW34]]></category>
		<category><![CDATA[CA3140]]></category>
		<category><![CDATA[microfoane]]></category>
		<category><![CDATA[receptor infrarosu]]></category>

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		<description><![CDATA[Aceasta solutie de microfon reactionand la radiatii infrarosii, poate fi concretizata si mai bine prin amplasarea montajului in carcasa unei fise DIN. Microfonul cu IR consta dintr-o fotodioda BP104 conectata la bornele de intrare in cc ale unui amplificator operational, al carui castig este determinat de R1. Dispozitivul poate fi utilizat pt a &#8220;asculta&#8221; lumea [...]


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<li><a href='http://www.scheme.dring.ro/334/comutator-actionat-de-la-distanta-in-infrarosu/' rel='bookmark' title='Permanent Link: Comutator actionat de la distanta in infrarosu'>Comutator actionat de la distanta in infrarosu</a> <small>SFH505A realizat de Siemens combina dioda receptoare in infrarosu, amplificatorul,...</small></li>
<li><a href='http://www.scheme.dring.ro/179/preamplificator-microfon-dinamic-cu-lm387/' rel='bookmark' title='Permanent Link: Preamplificator microfon dinamic cu LM387'>Preamplificator microfon dinamic cu LM387</a> <small>In acest montaj de preamplificator de microfon dinamic, impedanta de...</small></li>
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		<title>Tantar electronic</title>
		<link>http://www.scheme.dring.ro/275/tantar-electronic/</link>
		<comments>http://www.scheme.dring.ro/275/tantar-electronic/#comments</comments>
		<pubDate>Wed, 14 Dec 2011 09:24:09 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[casa]]></category>
		<category><![CDATA[Hobby]]></category>
		<category><![CDATA[4093]]></category>
		<category><![CDATA[BF256A]]></category>
		<category><![CDATA[buzzer]]></category>
		<category><![CDATA[scheme tantari]]></category>

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		<description><![CDATA[Montajul se comporta ca un tantar adevarat: imediat ce se intuneca acesta incepe sa bazaie in mod suparator. Cum se lumineaza ele redevine mut, astfel ca, la fel ca in cazul tantarului veritabil este foarte greu de reperat. Tensiunea de la pinul 2 al lui IC1a determinca daca tantarul este activ sau nu. Nivelul acestei [...]


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<li><a href='http://www.scheme.dring.ro/439/selector-comutator-electronic-de-antena/' rel='bookmark' title='Permanent Link: Selector / Comutator electronic de antena'>Selector / Comutator electronic de antena</a> <small>Selectorul / comutatorul electronic de antena a fost conceput pentru...</small></li>
<li><a href='http://www.scheme.dring.ro/396/led-bicolor-rg/' rel='bookmark' title='Permanent Link: LED bicolor RG'>LED bicolor RG</a> <small>Montajul controller LED bicolor RG functioneaza astfel: cand tensiunea de...</small></li>
</ol>]]></description>
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		<title>LED bicolor RG</title>
		<link>http://www.scheme.dring.ro/396/led-bicolor-rg/</link>
		<comments>http://www.scheme.dring.ro/396/led-bicolor-rg/#comments</comments>
		<pubDate>Sat, 26 Nov 2011 04:10:34 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Hobby]]></category>
		<category><![CDATA[led bicolor]]></category>
		<category><![CDATA[schema leduri]]></category>
		<category><![CDATA[TLC272]]></category>

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		<description><![CDATA[Montajul controller LED bicolor RG functioneaza astfel: cand tensiunea de control de la intrarea circuitului variaza de la 0V la +12V, LED-ul lumineaza la inceput verde si apoi trece, gradat, prin portocaliu si galben, pana la rosu. Cele doua sectiuni ale LED-ului bicolor (rosu si verde) sunt comandate separat: cea verde cu IC1a prin R7, [...]


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