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	<title>Válvula 16GY5 &#8211; Hobbytools &#8211; Ferramentas para hobbistas</title>
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		<title>Válvula 16GY5</title>
		<link>https://www.hobbytools.com.br/produto/valvula-16gy5/</link>
					<comments>https://www.hobbytools.com.br/produto/valvula-16gy5/#respond</comments>
		
		<dc:creator><![CDATA[natali Montanhini]]></dc:creator>
		<pubDate>Mon, 13 Oct 2025 17:26:13 +0000</pubDate>
				<guid isPermaLink="false">https://www.hobbytools.com.br/?post_type=product&#038;p=4177</guid>

					<description><![CDATA[<p data-start="223" data-end="625">A <strong data-start="225" data-end="234">16GY5</strong> é uma <strong data-start="241" data-end="294">tetrodo de feixe de potência (Beam Power Tetrode)</strong> desenvolvida para uso em <strong data-start="320" data-end="364">circuitos de saída vertical e horizontal</strong> de televisores valvulados e, em menor escala, em <strong data-start="414" data-end="451">amplificadores de áudio compactos</strong>.<br data-start="452" data-end="455" />Ela pertence à mesma família das válvulas <strong data-start="497" data-end="505">8GY5</strong> e <strong data-start="508" data-end="517">21GY5</strong>, diferenciando-se pela <strong data-start="541" data-end="576">tensão de aquecimento de 16,8 V</strong>, adequada a aparelhos com filamentos em série.</p>
<p data-start="627" data-end="833">O tubo apresenta <strong data-start="644" data-end="663">boa linearidade</strong>, <strong data-start="665" data-end="684">baixa distorção</strong> e <strong data-start="687" data-end="707">robustez térmica</strong>, sendo muito utilizado em aplicações onde se buscava uma válvula de potência moderada, com formato compacto e custo reduzido.</p>]]></description>
										<content:encoded><![CDATA[<h2 data-start="168" data-end="203">🧩 Ficha Técnica – Válvula 16GY5</h2>
<h3 data-start="205" data-end="222">📘 Introdução</h3>
<p data-start="223" data-end="625">A <strong data-start="225" data-end="234">16GY5</strong> é uma <strong data-start="241" data-end="294">tetrodo de feixe de potência (Beam Power Tetrode)</strong> desenvolvida para uso em <strong data-start="320" data-end="364">circuitos de saída vertical e horizontal</strong> de televisores valvulados e, em menor escala, em <strong data-start="414" data-end="451">amplificadores de áudio compactos</strong>.<br data-start="452" data-end="455" />Ela pertence à mesma família das válvulas <strong data-start="497" data-end="505">8GY5</strong> e <strong data-start="508" data-end="517">21GY5</strong>, diferenciando-se pela <strong data-start="541" data-end="576">tensão de aquecimento de 16,8 V</strong>, adequada a aparelhos com filamentos em série.</p>
<p data-start="627" data-end="833">O tubo apresenta <strong data-start="644" data-end="663">boa linearidade</strong>, <strong data-start="665" data-end="684">baixa distorção</strong> e <strong data-start="687" data-end="707">robustez térmica</strong>, sendo muito utilizado em aplicações onde se buscava uma válvula de potência moderada, com formato compacto e custo reduzido.</p>
<hr data-start="835" data-end="838" />
<h3 data-start="840" data-end="864">⚙️ Estrutura Interna</h3>
<ul data-start="865" data-end="1177">
<li data-start="865" data-end="907">
<p data-start="867" data-end="907">Tipo: <strong data-start="873" data-end="905">Tetrodo de feixe de potência</strong></p>
</li>
<li data-start="908" data-end="1004">
<p data-start="910" data-end="1004">Elementos: Placa, Grade de Controle (G1), Grade de Tela (G2), Cátodo e Feixes Direcionadores</p>
</li>
<li data-start="1005" data-end="1029">
<p data-start="1007" data-end="1029">Aquecimento indireto</p>
</li>
<li data-start="1030" data-end="1095">
<p data-start="1032" data-end="1095">Invólucro de vidro tipo <strong data-start="1056" data-end="1093">Compactron (12 pinos – base B12C)</strong></p>
</li>
<li data-start="1096" data-end="1177">
<p data-start="1098" data-end="1177">Estrutura otimizada para deflexão vertical e saída de áudio de média potência</p>
</li>
</ul>
<hr data-start="1179" data-end="1182" />
<h3 data-start="1184" data-end="1213">⚙️ Características Gerais</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="1214" data-end="1834">
<thead data-start="1214" data-end="1235">
<tr data-start="1214" data-end="1235">
<th data-start="1214" data-end="1226" data-col-size="md">Parâmetro</th>
<th data-start="1226" data-end="1235" data-col-size="md">Valor</th>
</tr>
</thead>
<tbody data-start="1259" data-end="1834">
<tr data-start="1259" data-end="1298">
<td data-start="1259" data-end="1266" data-col-size="md">Tipo</td>
<td data-start="1266" data-end="1298" data-col-size="md">Tetrodo de feixe de potência</td>
</tr>
<tr data-start="1299" data-end="1366">
<td data-start="1299" data-end="1318" data-col-size="md">Aplicação típica</td>
<td data-start="1318" data-end="1366" data-col-size="md">Deflexão vertical / amplificador de potência</td>
</tr>
<tr data-start="1367" data-end="1409">
<td data-start="1367" data-end="1380" data-col-size="md">Envoltório</td>
<td data-start="1380" data-end="1409" data-col-size="md">Vidro – Compactron (B12C)</td>
</tr>
<tr data-start="1410" data-end="1449">
<td data-start="1410" data-end="1439" data-col-size="md">Tensão de aquecimento (Uf)</td>
<td data-start="1439" data-end="1449" data-col-size="md">16,8 V</td>
</tr>
<tr data-start="1450" data-end="1491">
<td data-start="1450" data-end="1481" data-col-size="md">Corrente de aquecimento (If)</td>
<td data-start="1481" data-end="1491" data-col-size="md">0,45 A</td>
</tr>
<tr data-start="1492" data-end="1536">
<td data-start="1492" data-end="1527" data-col-size="md">Tensão máxima da placa (Va máx.)</td>
<td data-start="1527" data-end="1536" data-col-size="md">550 V</td>
</tr>
<tr data-start="1537" data-end="1590">
<td data-start="1537" data-end="1581" data-col-size="md">Tensão máxima da grade de tela (Vg2 máx.)</td>
<td data-start="1581" data-end="1590" data-col-size="md">275 V</td>
</tr>
<tr data-start="1591" data-end="1626">
<td data-start="1591" data-end="1617" data-col-size="md">Corrente média de placa</td>
<td data-start="1617" data-end="1626" data-col-size="md">65 mA</td>
</tr>
<tr data-start="1627" data-end="1665">
<td data-start="1627" data-end="1655" data-col-size="md">Corrente de pico de placa</td>
<td data-start="1655" data-end="1665" data-col-size="md">250 mA</td>
</tr>
<tr data-start="1666" data-end="1703">
<td data-start="1666" data-end="1695" data-col-size="md">Dissipação máxima da placa</td>
<td data-start="1695" data-end="1703" data-col-size="md">10 W</td>
</tr>
<tr data-start="1704" data-end="1739">
<td data-start="1704" data-end="1732" data-col-size="md">Dissipação máxima da tela</td>
<td data-start="1732" data-end="1739" data-col-size="md">2 W</td>
</tr>
<tr data-start="1740" data-end="1778">
<td data-start="1740" data-end="1764" data-col-size="md">Transcondutância (gm)</td>
<td data-start="1764" data-end="1778" data-col-size="md">6 000 µmho</td>
</tr>
<tr data-start="1779" data-end="1807">
<td data-start="1779" data-end="1786" data-col-size="md">Base</td>
<td data-start="1786" data-end="1807" data-col-size="md">Compactron (B12C)</td>
</tr>
<tr data-start="1808" data-end="1834">
<td data-start="1808" data-end="1826" data-col-size="md">Peso aproximado</td>
<td data-start="1826" data-end="1834" data-col-size="md">22 g</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="1836" data-end="1839" />
<h3 data-start="1841" data-end="1883">⚡ Dados de Operação – Classe A (Áudio)</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="1884" data-end="2272">
<thead data-start="1884" data-end="1905">
<tr data-start="1884" data-end="1905">
<th data-start="1884" data-end="1896" data-col-size="sm">Parâmetro</th>
<th data-start="1896" data-end="1905" data-col-size="sm">Valor</th>
</tr>
</thead>
<tbody data-start="1929" data-end="2272">
<tr data-start="1929" data-end="1961">
<td data-start="1929" data-end="1952" data-col-size="sm">Tensão de placa (Va)</td>
<td data-start="1952" data-end="1961" data-col-size="sm">250 V</td>
</tr>
<tr data-start="1962" data-end="1994">
<td data-start="1962" data-end="1985" data-col-size="sm">Tensão de tela (Vg2)</td>
<td data-start="1985" data-end="1994" data-col-size="sm">250 V</td>
</tr>
<tr data-start="1995" data-end="2028">
<td data-start="1995" data-end="2019" data-col-size="sm">Tensão de grade (Vg1)</td>
<td data-start="2019" data-end="2028" data-col-size="sm">–13 V</td>
</tr>
<tr data-start="2029" data-end="2063">
<td data-start="2029" data-end="2054" data-col-size="sm">Corrente de placa (Ia)</td>
<td data-start="2054" data-end="2063" data-col-size="sm">55 mA</td>
</tr>
<tr data-start="2064" data-end="2097">
<td data-start="2064" data-end="2089" data-col-size="sm">Corrente de tela (Ig2)</td>
<td data-start="2089" data-end="2097" data-col-size="sm">5 mA</td>
</tr>
<tr data-start="2098" data-end="2127">
<td data-start="2098" data-end="2118" data-col-size="sm">Potência de saída</td>
<td data-start="2118" data-end="2127" data-col-size="sm">4,5 W</td>
</tr>
<tr data-start="2128" data-end="2163">
<td data-start="2128" data-end="2156" data-col-size="sm">Distorção harmônica total</td>
<td data-start="2156" data-end="2163" data-col-size="sm">8 %</td>
</tr>
<tr data-start="2164" data-end="2200">
<td data-start="2164" data-end="2192" data-col-size="sm">Impedância de carga ótima</td>
<td data-start="2192" data-end="2200" data-col-size="sm">5 kΩ</td>
</tr>
<tr data-start="2201" data-end="2235">
<td data-start="2201" data-end="2229" data-col-size="sm">Fator de amplificação (µ)</td>
<td data-start="2229" data-end="2235" data-col-size="sm">12</td>
</tr>
<tr data-start="2236" data-end="2272">
<td data-start="2236" data-end="2263" data-col-size="sm">Resistência interna (ri)</td>
<td data-start="2263" data-end="2272" data-col-size="sm">30 kΩ</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="2274" data-end="2277" />
<h3 data-start="2279" data-end="2327">⚡ Dados de Operação – Deflexão Vertical (TV)</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="2328" data-end="2590">
<thead data-start="2328" data-end="2349">
<tr data-start="2328" data-end="2349">
<th data-start="2328" data-end="2340" data-col-size="sm">Parâmetro</th>
<th data-start="2340" data-end="2349" data-col-size="sm">Valor</th>
</tr>
</thead>
<tbody data-start="2373" data-end="2590">
<tr data-start="2373" data-end="2407">
<td data-start="2373" data-end="2398" data-col-size="sm">Tensão de placa (pico)</td>
<td data-start="2398" data-end="2407" data-col-size="sm">550 V</td>
</tr>
<tr data-start="2408" data-end="2446">
<td data-start="2408" data-end="2436" data-col-size="sm">Corrente de pico de placa</td>
<td data-start="2436" data-end="2446" data-col-size="sm">250 mA</td>
</tr>
<tr data-start="2447" data-end="2473">
<td data-start="2447" data-end="2464" data-col-size="sm">Corrente média</td>
<td data-start="2464" data-end="2473" data-col-size="sm">65 mA</td>
</tr>
<tr data-start="2474" data-end="2507">
<td data-start="2474" data-end="2498" data-col-size="sm">Tensão de tela (pico)</td>
<td data-start="2498" data-end="2507" data-col-size="sm">300 V</td>
</tr>
<tr data-start="2508" data-end="2545">
<td data-start="2508" data-end="2536" data-col-size="sm">Dissipação média da placa</td>
<td data-start="2536" data-end="2545" data-col-size="sm">8–9 W</td>
</tr>
<tr data-start="2546" data-end="2590">
<td data-start="2546" data-end="2578" data-col-size="sm">Frequência de operação típica</td>
<td data-start="2578" data-end="2590" data-col-size="sm">50–60 Hz</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="2592" data-end="2595" />
<h3 data-start="2597" data-end="2634">🔌 Pinagem – Base Compactron B12C</h3>
<div class="_tableContainer_1rjym_1">
<div class="group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse" tabindex="-1">
<table class="w-fit min-w-(--thread-content-width)" data-start="2635" data-end="2867">
<thead data-start="2635" data-end="2653">
<tr data-start="2635" data-end="2653">
<th data-start="2635" data-end="2642" data-col-size="sm">Pino</th>
<th data-start="2642" data-end="2653" data-col-size="sm">Conexão</th>
</tr>
</thead>
<tbody data-start="2674" data-end="2867">
<tr data-start="2674" data-end="2706">
<td data-start="2674" data-end="2678" data-col-size="sm">1</td>
<td data-start="2678" data-end="2706" data-col-size="sm">Grade de controle (G1)</td>
</tr>
<tr data-start="2707" data-end="2735">
<td data-start="2707" data-end="2711" data-col-size="sm">2</td>
<td data-col-size="sm" data-start="2711" data-end="2735">Grade de tela (G2)</td>
</tr>
<tr data-start="2736" data-end="2751">
<td data-start="2736" data-end="2740" data-col-size="sm">3</td>
<td data-col-size="sm" data-start="2740" data-end="2751">Placa</td>
</tr>
<tr data-start="2752" data-end="2768">
<td data-start="2752" data-end="2756" data-col-size="sm">4</td>
<td data-col-size="sm" data-start="2756" data-end="2768">Cátodo</td>
</tr>
<tr data-start="2769" data-end="2800">
<td data-start="2769" data-end="2773" data-col-size="sm">5</td>
<td data-col-size="sm" data-start="2773" data-end="2800">Feixes direcionadores</td>
</tr>
<tr data-start="2801" data-end="2820">
<td data-start="2801" data-end="2805" data-col-size="sm">6</td>
<td data-col-size="sm" data-start="2805" data-end="2820">Filamento</td>
</tr>
<tr data-start="2821" data-end="2840">
<td data-start="2821" data-end="2825" data-col-size="sm">7</td>
<td data-col-size="sm" data-start="2825" data-end="2840">Filamento</td>
</tr>
<tr data-start="2841" data-end="2867">
<td data-start="2841" data-end="2850" data-col-size="sm">8 – 12</td>
<td data-col-size="sm" data-start="2850" data-end="2867">Sem conexão</td>
</tr>
</tbody>
</table>
</div>
</div>
<blockquote data-start="2869" data-end="2984">
<p data-start="2871" data-end="2984"><em data-start="2871" data-end="2878">Nota:</em> Filamento entre <strong data-start="2895" data-end="2910">pinos 6 e 7</strong>.<br data-start="2911" data-end="2914" />O cátodo e os feixes direcionadores são interligados internamente.</p>
</blockquote>
<hr data-start="2986" data-end="2989" />
<h3 data-start="2991" data-end="3016">🧠 Aplicações Típicas</h3>
<ul data-start="3017" data-end="3325">
<li data-start="3017" data-end="3082">
<p data-start="3019" data-end="3082"><strong data-start="3019" data-end="3037">Saída vertical</strong> e amplificação de potência em televisores.</p>
</li>
<li data-start="3083" data-end="3143">
<p data-start="3085" data-end="3143"><strong data-start="3085" data-end="3122">Amplificadores de áudio compactos</strong> em Classe A ou AB.</p>
</li>
<li data-start="3144" data-end="3198">
<p data-start="3146" data-end="3198"><strong data-start="3146" data-end="3196">Osciladores e moduladores de baixa frequência.</strong></p>
</li>
<li data-start="3199" data-end="3325">
<p data-start="3201" data-end="3325">Projetos experimentais de <strong data-start="3227" data-end="3249">Hi-Fi single-ended</strong>, substituindo válvulas como <strong data-start="3278" data-end="3286">6CZ5</strong> ou <strong data-start="3290" data-end="3298">EL84</strong> com pequenas adaptações.</p>
</li>
</ul>
<hr data-start="3327" data-end="3330" />
<h3 data-start="3332" data-end="3367">🔁 Equivalentes e Substituições</h3>
<div class="_tableContainer_1rjym_1">
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<table class="w-fit min-w-(--thread-content-width)" data-start="3368" data-end="3753">
<thead data-start="3368" data-end="3403">
<tr data-start="3368" data-end="3403">
<th data-start="3368" data-end="3377" data-col-size="sm">Modelo</th>
<th data-start="3377" data-end="3403" data-col-size="md">Diferença / Observação</th>
</tr>
</thead>
<tbody data-start="3440" data-end="3753">
<tr data-start="3440" data-end="3480">
<td data-start="3440" data-end="3447" data-col-size="sm">8GY5</td>
<td data-col-size="md" data-start="3447" data-end="3480">Mesmo tipo, filamento 8,4 V</td>
</tr>
<tr data-start="3481" data-end="3511">
<td data-start="3481" data-end="3489" data-col-size="sm">21GY5</td>
<td data-col-size="md" data-start="3489" data-end="3511">Versão para 21 V</td>
</tr>
<tr data-start="3512" data-end="3584">
<td data-start="3512" data-end="3520" data-col-size="sm">16GK6</td>
<td data-col-size="md" data-start="3520" data-end="3584">Parâmetros semelhantes, leve diferença em transcondutância</td>
</tr>
<tr data-start="3585" data-end="3643">
<td data-start="3585" data-end="3592" data-col-size="sm">6CZ5</td>
<td data-col-size="md" data-start="3592" data-end="3643">Similar em potência e função (base diferente)</td>
</tr>
<tr data-start="3644" data-end="3710">
<td data-start="3644" data-end="3658" data-col-size="sm">EL84 / 6BQ5</td>
<td data-col-size="md" data-start="3658" data-end="3710">Substituição funcional aproximada (base noval)</td>
</tr>
<tr data-start="3711" data-end="3753">
<td data-start="3711" data-end="3718" data-col-size="sm">6CM6</td>
<td data-col-size="md" data-start="3718" data-end="3753">Equivalente com soquete octal</td>
</tr>
</tbody>
</table>
</div>
</div>
<hr data-start="3755" data-end="3758" />
<h3 data-start="3760" data-end="3787">⚠️ Cuidados de Operação</h3>
<ul data-start="3788" data-end="4178">
<li data-start="3788" data-end="3864">
<p data-start="3790" data-end="3864">Evitar tensão de placa acima de 550 V e tensão de tela superior a 275 V.</p>
</li>
<li data-start="3865" data-end="3950">
<p data-start="3867" data-end="3950">Utilizar resistores limitadores (“grid stoppers”): G1 → 470 Ω a 1 kΩ; G2 → 220 Ω.</p>
</li>
<li data-start="3951" data-end="4026">
<p data-start="3953" data-end="4026">Garantir boa ventilação no chassi — temperatura de operação até 160 °C.</p>
</li>
<li data-start="4027" data-end="4096">
<p data-start="4029" data-end="4096">Aguardar 10–12 s de aquecimento antes de aplicar tensão de placa.</p>
</li>
<li data-start="4097" data-end="4178">
<p data-start="4099" data-end="4178">Evitar uso com capacitores com vazamento na grade — pode causar fuga térmica.</p>
</li>
</ul>
<hr data-start="4180" data-end="4183" />
<h3 data-start="4185" data-end="4226">📈 Curvas Características (descrição)</h3>
<ul data-start="4227" data-end="4477">
<li data-start="4227" data-end="4308">
<p data-start="4229" data-end="4308"><strong data-start="4229" data-end="4256">Ia × Va (G2 constante):</strong> linear até 250 V, saturação suave acima de 300 V.</p>
</li>
<li data-start="4309" data-end="4385">
<p data-start="4311" data-end="4385"><strong data-start="4311" data-end="4324">Ia × Vg1:</strong> corte em aprox. –20 V; operação estável entre –10 e –15 V.</p>
</li>
<li data-start="4386" data-end="4477">
<p data-start="4388" data-end="4477"><strong data-start="4388" data-end="4415">Curva de transferência:</strong> linear em regime de áudio, boa resposta de graves e médios.</p>
</li>
</ul>
<hr data-start="4479" data-end="4482" />
<h3 data-start="4484" data-end="4513">🧾 Observações Históricas</h3>
<p data-start="4514" data-end="4806">A <strong data-start="4516" data-end="4525">16GY5</strong> foi introduzida por <strong data-start="4546" data-end="4553">RCA</strong>, <strong data-start="4555" data-end="4567">Sylvania</strong> e <strong data-start="4570" data-end="4576">GE</strong> no início dos <strong data-start="4591" data-end="4604">anos 1960</strong>, para substituir válvulas de deflexão vertical de menor eficiência.<br data-start="4672" data-end="4675" />Com sua estrutura Compactron e aquecimento em série, tornou-se padrão em <strong data-start="4748" data-end="4794">televisores norte-americanos e brasileiros</strong> da época.</p>
<p data-start="4808" data-end="5037">Com o tempo, passou a ser valorizada em <strong data-start="4848" data-end="4879">projetos de áudio artesanal</strong>, por sua sonoridade equilibrada e fácil adaptação em circuitos que utilizam <strong data-start="4956" data-end="4964">6CZ5</strong> ou <strong data-start="4968" data-end="4976">EL84</strong>, oferecendo um <strong data-start="4992" data-end="5036">timbre quente, definido e de custo baixo</strong>.</p>
<p data-start="4808" data-end="5037"><a href="https://www.hobbytools.com.br/wp-content/uploads/2025/10/DATASHEET-VALVULA-16GY5.pdf">DATASHEET VALVULA 16GY5</a></p>
<p data-start="4808" data-end="5037"><a href="https://www.hobbytools.com.br/wp-content/uploads/2025/10/DATASHEET-VALVULA-16GY5-1.pdf">DATASHEET VALVULA 16GY5</a></p>
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