[{"data":1,"prerenderedAt":1070},["ShallowReactive",2],{"schematic:dual-rail-7815-7915-split-power-supply:pt":3},{"schematic":4,"title":19,"shortDescription":22,"proseSource":1033,"localizationFallbackIssues":1034,"related":1035,"confirmations":1034},{"schemaVersion":5,"governance":6,"slug":18,"title":19,"cluster":20,"tier":21,"shortDescription":22,"deepTechnicalOverview":23,"theoryOfOperation":24,"keySpecifications":25,"applications":50,"gotchas":55,"formulas":75,"bom":141,"interactiveElements":215,"circuitJson":306,"svg":1026,"relatedSchematicSlugs":1027,"relatedComponentSlugs":1030,"relatedBoardSlugs":1032},"1.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-10-23",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Claude (documentary review against TI SNOSBQ7C Figure 8 and TI SNOSBT0L; CAD redraw; LLM localization review; owner publication GO; no bench or native-human claim)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17],"https:\u002F\u002Fwww.ti.com\u002Flit\u002Fds\u002Fsymlink\u002Flm79.pdf","dual-rail-7815-7915-split-power-supply","Fonte simétrica rastreadora ±15 V (LM7815 \u002F LM7915)","power_supplies","Tier 2","O regulador rastreador de ±15 V e 1 A da folha de dados TI LM79xx: um LM7915 ajustado para exatamente −15 V e um LM7815 cujo pino de terra é controlado por um amplificador operacional LM307, de modo que o trilho positivo espelha o negativo.","Esta é a figura 8 da folha de dados LM79XX da Texas Instruments (SNOSBQ7C), uma fonte simétrica para circuitos com amplificadores operacionais e de áudio que precisam de trilhos positivo e negativo iguais. Dois reguladores fixos geram os trilhos: um LM7915 para −15 V e um LM7815 para +15 V (a TI o desenha como LM340T-15, que a folha de dados do LM340 especifica junto com o LM7815). Sozinhos, os dois trilhos poderiam diferir em até 1,2 V, porque cada regulador só garante 4% (de 14,4 V a 15,6 V). O circuito elimina essa diferença em dois passos: um trimpot ajusta a saída negativa em exatamente −15,0 V, e um amplificador operacional desloca o pino GND do regulador positivo até que um divisor de resistores de 1% entre os trilhos marque 0 V, o que obriga o trilho positivo a ter o mesmo módulo. Os diodos de proteção impedem que qualquer saída vá para a polaridade oposta. As entradas não reguladas ±VIN vêm de um retificador e filtro separados (a TI mediu o ripple com capacitores de entrada de 3000 µF); elas não estão desenhadas.","### 1. Dois reguladores com um COMMON compartilhado\nU1 (LM7815) reduz +VIN para +15 V e U2 (LM7915) regula −VIN em −15 V. COMMON é o ponto de 0 V entre os trilhos, compartilhado com a carga. Cada regulador mantém sua saída a 15 V fixos do próprio pino GND, e neste circuito nenhum dos pinos GND está ligado diretamente ao COMMON: é isso que permite ajustar as duas saídas.\n\n### 2. Ajuste do trilho negativo\nO pino GND de U2 fica sobre R1 (50 Ω) até o COMMON. R3 está ligado entre as duas saídas e seu cursor injeta corrente através de R2 (1 kΩ) em R1, subindo ou descendo o pino GND e, com ele, a saída de −15 V. Com o cursor em qualquer uma das extremidades, o deslocamento é de aproximadamente:\n$$\\Delta V_{GND} \\approx \\pm V_W \\frac{R_1}{R_1 + R_2} = \\pm 15\\text{ V} \\cdot \\frac{50\\,\\Omega}{1050\\,\\Omega} \\approx \\pm 0.71\\text{ V}$$\nA própria corrente do pino GND do regulador, 1,5 mA típicos, também passa por R1 e acrescenta cerca de 75 mV; o ajuste também compensa isso. R3 é ajustado para obter exatamente −15,0 V na saída.\n\n### 3. O trilho positivo acompanha o negativo\nR4 e R5, ambos de 10 kΩ 1%, formam um divisor entre +15 V e −15 V. O LM307 compara seu ponto médio (pino 2) com o COMMON (pino 3) e controla o pino GND de U1 pelo pino 6. Se o trilho positivo estiver alto demais, o ponto médio sobe acima de 0 V, a saída do amplificador operacional cai e puxa U1 para baixo na mesma medida. A malha se estabiliza quando o ponto médio está em 0 V:\n$$V_{+} = -V_{-} \\cdot \\frac{R_4}{R_5}$$\nCom R4 = R5, a saída positiva é igual ao módulo da negativa, então ajustar R3 define os dois trilhos. A TI observa que a tolerância de R4 e R5 determina o quanto as saídas coincidem. A saída do amplificador só se desloca pela diferença entre a tensão própria do LM7815, de 14,4 V a 15,6 V, e o valor desejado, e precisa absorver a corrente quiescente de U1, até 8 mA.\n\n### 4. Capacitores de saída e diodos de proteção\nC1 e C2 (25 µF cada) ficam nas saídas. A TI exige um capacitor de saída no LM79xx para estabilidade: 1 µF de tântalo sólido ou 25 µF eletrolítico de alumínio. D1 e D2 (1N4001) ficam reversamente polarizados em operação normal; a TI os desenha sem descrever sua função. Se uma saída for puxada além do COMMON em direção à polaridade oposta, por exemplo quando um regulador parte antes do outro com uma carga ligada entre os trilhos, o diodo conduz e limita a tensão reversa sobre esse regulador a cerca de uma queda de diodo.\n\n### 5. Entradas, margem e calor\nC4 e C5 só são necessários se os capacitores de filtro da fonte não regulada estiverem a mais de 3 polegadas (cerca de 7,6 cm). O LM7815 precisa de pelo menos 17,7 V para sua especificação de regulação de linha e suporta no máximo 35 V; o LM7915 é especificado de −17,5 V a −30 V nos testes de regulação de linha e suporta −35 V. Cada regulador dissipa a tensão que cai sobre ele multiplicada pela corrente de carga:\n$$P_D = (V_{IN} - V_{OUT}) \\cdot I_{OUT} = (20\\text{ V} - 15\\text{ V}) \\cdot 1\\text{ A} = 5\\text{ W}$$\nNesse nível os dois reguladores precisam de dissipador.",[26,29,32,35,38,41,44,47],{"label":27,"value":28},"Tensão de saída regulada","+15 V e −15 V com rastreamento; até 1 A (figura 8 da TI)",{"label":30,"value":31},"Regulação de carga com ΔIL = 1 A","40 mV (−15 V), 2 mV (+15 V) (tabela da figura 8 da TI)",{"label":33,"value":34},"Ripple de saída","100 µVrms com CIN = 3000 µF, IL = 1 A (tabela da figura 8 da TI)",{"label":36,"value":37},"Ruído de saída","150 µVrms, 10 Hz ≤ f ≤ 10 kHz (tabela da figura 8 da TI)",{"label":39,"value":40},"Estabilidade térmica","50 mV (tabela da figura 8 da TI)",{"label":42,"value":43},"Faixa de tensão de entrada","+VIN de 17,7 V a 35 V (LM7815, TI SNOSBT0L); −VIN de −17,5 V a −35 V (LM7915, TI SNOSBQ7C)",{"label":45,"value":46},"Faixa de ajuste da saída","≈ ±0,7 V (calculado a partir de R1, R2 e dos trilhos de ±15 V)",{"label":48,"value":49},"Igualdade entre trilhos","Definida pela tolerância de R4 e R5 (1% no esquema)",[51,52,53,54],"Alimentação bipolar para circuitos com amplificadores operacionais e de instrumentação","Fontes de pré-amplificadores e mesas de som","Equipamentos de teste analógicos que precisam de trilhos simétricos","Fontes de bancada de laboratório de ±15 V",[56,61,65,70],{"title":57,"trap":58,"solution":59,"severity":60},"Os dois reguladores em um mesmo dissipador aterrado","Nenhuma aba está no COMMON. A aba do LM7915 é a sua entrada, −VIN, e a do LM7815 é o seu pino GND, que neste circuito é a saída do amplificador operacional. Parafusar os dois em um mesmo dissipador metálico ou em um chassi aterrado sem isolamento coloca −VIN, a saída do amplificador e o COMMON em curto.","Isole cada regulador com uma lâmina de mica ou silicone e uma bucha isolante, ou dê a cada um seu próprio dissipador isolado.","critical",{"title":62,"trap":63,"solution":64,"severity":60},"As pinagens de 78xx e 79xx são diferentes","No TO-220 os pinos do LM7815 são INPUT, GND, OUTPUT, mas os do LM7915 são GND, INPUT, OUTPUT. Copiar o layout do regulador positivo para o negativo troca sua entrada e seu terra.","Confira cada peça com o diagrama de ligação da própria folha de dados antes de soldar (TI SNOSBT0L §5, TI SNOSBQ7C figura 1).",{"title":66,"trap":67,"solution":68,"severity":69},"Superaquecimento com carga total","Cada regulador dissipa (VIN − VOUT) · IOUT, cerca de 5 W a 1 A partindo de 20 V. Sem dissipador o regulador esquenta até que sua proteção térmica reduza a saída.","Mantenha a margem de entrada pequena, mas acima do mínimo, e dimensione o dissipador para a corrente de carga real.","warning",{"title":71,"trap":72,"solution":73,"severity":74},"Resistores do divisor desiguais","O trilho positivo copia o negativo através de R4 e R5. Uma diferença de 1% entre eles gera cerca de 1% de diferença entre os módulos dos trilhos.","Use resistores de 1% ou melhores em R4 e R5, ou pares casados quando os trilhos precisarem coincidir com precisão.","info",[76,98,119],{"name":77,"latexOrText":78,"description":79,"variables":80},"Condição de rastreamento","V_{+} = -V_{-} \\cdot \\frac{R_4}{R_5}","O amplificador operacional mantém o ponto médio de R4\u002FR5 em 0 V, então o trilho positivo é definido pelo negativo e pela relação dos resistores.",[81,86,89,94],{"symbol":82,"name":83,"typicalValue":84,"unit":85},"R_4","Resistor superior do divisor","10","kΩ",{"symbol":87,"name":88,"typicalValue":84,"unit":85},"R_5","Resistor inferior do divisor",{"symbol":90,"name":91,"typicalValue":92,"unit":93},"V_{-}","Saída negativa","-15","V",{"symbol":95,"name":96,"typicalValue":97,"unit":93},"V_{+}","Saída positiva","15",{"name":99,"latexOrText":100,"description":101,"variables":102},"Faixa de ajuste do trilho negativo","\\Delta V_{GND} \\approx \\pm V_W \\frac{R_1}{R_1 + R_2}","Deslocamento do pino de terra de U2 e, portanto, da saída de −15 V, com o cursor de R3 em qualquer extremidade. A corrente própria do pino de terra do regulador é desprezada.",[103,106,111,115],{"symbol":104,"name":105,"typicalValue":97,"unit":93},"V_W","Tensão do cursor no fim do curso",{"symbol":107,"name":108,"typicalValue":109,"unit":110},"R_1","Resistor de referência do ajuste","50","Ω",{"symbol":112,"name":113,"typicalValue":114,"unit":110},"R_2","Resistor de injeção do ajuste","1000",{"symbol":116,"name":117,"typicalValue":118,"unit":93},"\\Delta V_{GND}","Faixa de ajuste (calculada)","0.71",{"name":120,"latexOrText":121,"description":122,"variables":123},"Dissipação de potência do regulador","P_D = (V_{IN} - V_{OUT}) \\cdot I_{OUT}","Calor em cada regulador; a entrada de 20 V é um valor de exemplo.",[124,128,131,136],{"symbol":125,"name":126,"typicalValue":127,"unit":93},"V_{IN}","Módulo da tensão de entrada (exemplo)","20",{"symbol":129,"name":130,"typicalValue":97,"unit":93},"V_{OUT}","Módulo da tensão de saída",{"symbol":132,"name":133,"typicalValue":134,"unit":135},"I_{OUT}","Corrente de carga","1","A",{"symbol":137,"name":138,"typicalValue":139,"unit":140},"P_D","Dissipação (calculada)","5","W",[142,150,156,162,168,172,178,183,185,192,196,200,204,212],{"refDes":143,"componentName":144,"value":145,"package":146,"quantity":147,"role":148,"notes":149},"U1","Regulador de tensão positiva","LM7815","TO-220",1,"Regulador de +15 V","LM340T-15 na figura 8 da TI. Mesma folha de dados da TI (SNOSBT0L) do LM7805.",{"refDes":151,"componentName":152,"value":153,"package":146,"quantity":147,"role":154,"notes":155},"U2","Regulador de tensão negativa","LM7915","Regulador de −15 V","LM7915CT na figura 8 da TI.",{"refDes":157,"componentName":158,"value":159,"package":160,"quantity":147,"role":161},"U3","Amplificador operacional","LM307","DIP-8","Amplificador de rastreamento",{"refDes":163,"componentName":164,"value":165,"package":166,"quantity":147,"role":167},"R1","Resistor fixo","50Ω","Axial \u002F 0805","Referência do ajuste",{"refDes":169,"componentName":164,"value":170,"package":166,"quantity":147,"role":171},"R2","1kΩ","Injeção do ajuste",{"refDes":173,"componentName":174,"value":175,"package":176,"quantity":147,"role":177},"R3","Trimpot","5kΩ","Trimmer","Ajuste da saída para −15,0 V",{"refDes":179,"componentName":180,"value":181,"package":166,"quantity":147,"role":182},"R4","Resistor de precisão","10kΩ 1%","Divisor de rastreamento",{"refDes":184,"componentName":180,"value":181,"package":166,"quantity":147,"role":182},"R5",{"refDes":186,"componentName":187,"value":188,"package":189,"quantity":147,"role":190,"notes":191},"C1","Capacitor eletrolítico de alumínio","25µF","Radial","Saída de +15 V","O valor comercial mais próximo é 22 µF. Tensão nominal acima de 15 V.",{"refDes":193,"componentName":187,"value":188,"package":189,"quantity":147,"role":194,"notes":195},"C2","Saída de −15 V","+ no COMMON. Necessário para a estabilidade do LM79xx.",{"refDes":197,"componentName":187,"value":188,"package":189,"quantity":147,"role":198,"notes":199},"C4","Desacoplamento de +VIN","Só se os capacitores de filtro estiverem a mais de 3 polegadas. Tensão nominal acima de +VIN.",{"refDes":201,"componentName":187,"value":188,"package":189,"quantity":147,"role":202,"notes":203},"C5","Desacoplamento de −VIN","+ no COMMON. Só se os capacitores de filtro estiverem a mais de 3 polegadas.",{"refDes":205,"componentName":206,"value":207,"package":208,"quantity":147,"componentSlug":209,"role":210,"notes":211},"D1","Diodo retificador","1N4001","DO-41","1n4007","Proteção de +15 V","Um 1N4007 funciona da mesma forma; só tem tensão reversa nominal maior.",{"refDes":213,"componentName":206,"value":207,"package":208,"quantity":147,"componentSlug":209,"role":214,"notes":211},"D2","Proteção de −15 V",{"U1":216,"U2":226,"U3":236,"R1":244,"R2":249,"R3":254,"R4":260,"R5":266,"C1":269,"C2":277,"C4":283,"C5":289,"D1":295,"D2":301},{"refDes":143,"name":217,"value":145,"role":218,"description":219,"footprint":220,"specs":221},"Regulador positivo LM7815","Regulador de +15 V que acompanha o trilho negativo","Desenhado como LM340T-15 na figura 8 da TI; a TI especifica o LM340-15 e o LM7815 juntos. Mantém a saída 15 V acima do seu pino GND. Aqui o pino GND não está no COMMON: o amplificador operacional o controla, então a saída pode ser deslocada um pouco para igualar o trilho negativo.","TO-220 (tab = GND)",{"Tensão de saída":222,"Entrada para regulação de linha":223,"Corrente quiescente":224,"Tensão de entrada CC":225},"14,4 V – 15,6 V a TJ = 25 °C, 5 mA ≤ IO ≤ 1 A (TI SNOSBT0L §6.8)","17,7 V no mínimo a TJ = 25 °C, IO ≤ 1 A","8 mA no máximo a TJ = 25 °C","35 V máximo absoluto",{"refDes":151,"name":227,"value":153,"role":228,"description":229,"footprint":230,"specs":231},"Regulador negativo LM7915","Regulador de −15 V ajustado para −15,0 V","Mantém a saída 15 V abaixo do seu pino GND. O pino GND fica sobre R1 em vez do COMMON, então a rede de ajuste pode deslocá-lo uma fração de volt e colocar a saída em exatamente −15,0 V.","TO-220 (tab = INPUT)",{"Tensão de saída":232,"Tensão de dropout":233,"Corrente quiescente":234,"Tensão de entrada":235},"De −14,4 V a −15,6 V a TJ = 25 °C (TI SNOSBQ7C)","1,1 V típico a IOUT = 1 A","1,5 mA típico, 3 mA máximo","−35 V máximo absoluto",{"refDes":157,"name":237,"value":159,"role":238,"description":239,"footprint":240,"specs":241},"Amplificador operacional de rastreamento LM307","Faz o trilho positivo espelhar o negativo","Compara o ponto médio de R4 e R5 com o COMMON e controla o pino GND de U1 até que o ponto médio fique em 0 V, o que só acontece quando os dois trilhos têm o mesmo módulo. É alimentado pelas duas saídas (pino 7 em +15 V, pino 4 em −15 V) e precisa absorver a corrente quiescente de U1.","DIP-8 (pins 2, 3, 4, 6, 7 as in TI Figure 8)",{"Entradas":242,"Saída":243},"+ (pino 3) no COMMON, − (pino 2) no ponto médio de R4\u002FR5","Pino 6 no pino GND de U1",{"refDes":163,"name":108,"value":165,"role":245,"description":246,"footprint":166,"specs":247},"Define a faixa de ajuste junto com R2","Liga o pino GND de U2 ao COMMON. Por ele passam a corrente de ajuste vinda de R2 e a corrente própria do pino de terra do regulador, que deslocam o pino GND e, portanto, a saída de −15 V.",{"Resistência":248},"50 Ω (figura 8 da TI)",{"refDes":169,"name":113,"value":170,"role":250,"description":251,"footprint":166,"specs":252},"Injeta a corrente de ajuste vinda de R3","Leva corrente do cursor de R3 para R1. Junto com R1 limita a faixa de ajuste a cerca de ±0,7 V (calculado).",{"Resistência":253},"1 kΩ (figura 8 da TI)",{"refDes":173,"name":255,"value":175,"role":256,"description":257,"footprint":176,"specs":258},"Trimpot de ajuste da saída","Ajusta a saída negativa em −15,0 V","Ligado entre as duas saídas. Seu cursor alimenta R2, então girá-lo move o pino GND de U2 para cima ou para baixo. A TI o marca como “output trim to −15.0 V”; o trilho positivo acompanha pelo amplificador operacional.",{"Resistência":259},"5 kΩ (figura 8 da TI)",{"refDes":179,"name":83,"value":181,"role":261,"description":262,"footprint":263,"specs":264},"Metade do divisor de rastreamento","Com R5 forma um divisor entre +15 V e −15 V cujo ponto médio vai para o amplificador operacional. A TI observa que a tolerância de R4 e R5 determina o quanto as duas saídas coincidem.","Axial \u002F 0805, 1%",{"Resistência":265},"10 kΩ, 1% (figura 8 da TI)",{"refDes":184,"name":88,"value":181,"role":261,"description":267,"footprint":263,"specs":268},"Metade inferior do divisor. Qualquer diferença entre R4 e R5 aparece diretamente como diferença entre os módulos das duas saídas.",{"Resistência":265},{"refDes":186,"name":270,"value":188,"role":271,"description":272,"footprint":273,"specs":274},"Capacitor de saída de +15 V","Capacitor de saída, trilho positivo","De +15 V ao COMMON, terminal positivo em +15 V. Melhora a resposta transitória do trilho positivo.","Radial electrolytic",{"Capacitância":275,"Tipo":276,"Função":96},"25 µF (figura 8 da TI)","Eletrolítico de alumínio",{"refDes":193,"name":278,"value":188,"role":279,"description":280,"footprint":273,"specs":281},"Capacitor de saída de −15 V","Capacitor de saída, trilho negativo","Do COMMON a −15 V, terminal positivo no COMMON. A TI exige um capacitor de saída no LM79xx para estabilidade: 1 µF de tântalo sólido ou 25 µF eletrolítico de alumínio.",{"Capacitância":275,"Tipo":276,"Função":282},"Saída negativa, necessário para estabilidade (nota da figura 2 da TI)",{"refDes":197,"name":284,"value":188,"role":285,"description":286,"footprint":273,"specs":287},"Capacitor de desacoplamento de +VIN","Desacoplamento de entrada, lado positivo","De +VIN ao COMMON. A TI indica que só é necessário se os capacitores de filtro da fonte estiverem a mais de 3 polegadas (cerca de 7,6 cm) dos reguladores.",{"Capacitância":275,"Tipo":276,"Função":288},"Entrada positiva, só com fios de entrada longos",{"refDes":201,"name":290,"value":188,"role":291,"description":292,"footprint":273,"specs":293},"Capacitor de desacoplamento de −VIN","Desacoplamento de entrada, lado negativo","Do COMMON a −VIN, terminal positivo no COMMON. Mesma condição de C4.",{"Capacitância":275,"Tipo":276,"Função":294},"Entrada negativa, só com fios de entrada longos",{"refDes":205,"name":296,"value":207,"role":297,"description":298,"footprint":208,"specs":299},"Diodo de proteção de +15 V","Impede que a saída positiva fique negativa","Catodo em +15 V e anodo no COMMON, então fica reversamente polarizado em operação normal. Se a saída positiva for puxada abaixo do COMMON, por exemplo quando o trilho negativo parte primeiro com uma carga entre os trilhos, D1 conduz e a limita a cerca de uma queda de diodo.",{"Peça":300},"1N4001 (figura 8 da TI); 1N4002–1N4007 diferem só na tensão reversa nominal",{"refDes":213,"name":302,"value":207,"role":303,"description":304,"footprint":208,"specs":305},"Diodo de proteção de −15 V","Impede que a saída negativa fique positiva","Catodo no COMMON e anodo em −15 V. Só conduz se a saída negativa for puxada acima do COMMON, e a limita a cerca de uma queda de diodo.",{"Peça":300},{"schemaVersion":307,"id":308,"meta":309,"components":315,"nets":464,"junctions":552,"netLabels":617,"wires":618},"1.5","dual_rail_15v_tracking",{"title":19,"locale":310,"grid":311,"source":312},"pt",20,{"type":313,"ref":314,"url":17},"datasheet","Texas Instruments LM79XX Series 3-Terminal Negative Regulators, SNOSBQ7C (revised May 2013), Figure 8 \"±15V, 1 Amp Tracking Regulators\" (p. 7) and Figure 2 notes (p. 1); LM340 \u002F LM7815 characteristics from TI SNOSBT0L (revised September 2016) §6.8. The LM340T-15 of Figure 8 is drawn as LM7815, which the LM340 datasheet specifies together with 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tabela 10)","Regulador linear LM7805 de 5 V com desacoplamento (L7805CV)","Fonte nominal de 9 V para 5 V com ST L7805CV, capacitores de desacoplamento de entrada\u002Fsaída, diodo de descarga e indicador LED. Inclui especificações condicionais e cálculos térmicos.",8,3,"regulador linear lm7805 de 5 v com desacoplamento (l7805cv)\nfonte nominal de 9 v para 5 v com st l7805cv, capacitores de desacoplamento de entrada\u002Fsaída, diodo de descarga e indicador led. inclui especificações condicionais e cálculos térmicos.\nregulador linear lm7805 de 5 v com desacoplamento (l7805cv)\nfonte nominal de 9 v para 5 v com st l7805cv, capacitores de desacoplamento de entrada\u002Fsaída, diodo de descarga e indicador led. inclui especificações condicionais e cálculos térmicos.\nlm7805 5v linear regulator with decoupling (l7805cv)\na nominal 9v-to-5v supply using st l7805cv, input\u002Foutput bypass capacitors, a discharge-path diode and an led indicator. includes conditional ratings and thermal calculations.\npower_supplies\nregulador stmicroelectronics l7805cv\nl7805cv\nu1\nretificador de silício vishay\n1n4007\nd1\ncapacitor genérico de reserva de entrada\n10µf \u002F 25v\nc1\ncapacitor cerâmico genérico de desacoplamento de entrada\n330nf \u002F 50v\nc2\ncapacitor cerâmico genérico de desacoplamento de saída\n100nf \u002F 25v\nc3\ncapacitor genérico de reserva de saída\n100µf \u002F 16v\nc4\nresistor série genérico do led\n330ω \u002F 0.25w\nr1\nled indicador verde genérico\ngreen led\nled1",{"slug":1050,"cluster":20,"tier":1037,"supplyVoltage":1051,"voltageSpecification":1053,"signalDomain":467,"breadboardFriendly":14,"title":1055,"shortDescription":1056,"bomCount":1057,"formulaCount":1058,"search":1059},"lm2596-step-down-buck-converter",[1039,1040,1052],"dual_rail",{"kind":1042,"value":1054,"label":27},"5.0V CC (±4% de tolerância total: 4.80V a 5.20V)","Regulador chaveado rebaixador LM2596 (5V \u002F 3A)","Regulador chaveado rebaixador de alta eficiência a 150 kHz que fornece saída regulada de 5V com até 3A de carga contínua a partir de uma fonte de 7V–40V CC com mínimo de componentes externos.",7,4,"regulador chaveado rebaixador lm2596 (5v \u002F 3a)\nregulador chaveado rebaixador de alta eficiência a 150 khz que fornece saída regulada de 5v com até 3a de carga contínua a partir de uma fonte de 7v–40v cc com mínimo de componentes externos.\nregulador chaveado rebaixador lm2596 (5v \u002F 3a)\nregulador chaveado rebaixador de alta eficiência a 150 khz que fornece saída regulada de 5v com até 3a de carga contínua a partir de uma fonte de 7v–40v cc com mínimo de componentes externos.\nlm2596 step-down buck converter (5v \u002F 3a)\nhigh-efficiency 150-khz step-down switching regulator delivering a regulated 5v output at up to 3a continuous load from a 7v–40v dc supply with minimal external components.\npower_supplies\nregulador chaveado texas instruments lm2596-5.0\nlm2596t-5.0\nu1\nretificador schottky on semiconductor\n1n5822\nd1\nindutor toroidal de potência pulse electronics\n33µh \u002F 3.5a\nl1\ncapacitor eletrolítico de entrada low-esr nichicon\n680µf \u002F 50v\nc1\ncapacitor eletrolítico de saída low-esr nichicon\n220µf \u002F 25v\nc2\nconector de entrada de alimentação cc\n+12v dc (7v–40v)\np_vin\nconector de saída de alimentação cc\n+5.0v dc (up to 3a)\np_vout",{"slug":1029,"cluster":20,"tier":1037,"supplyVoltage":1061,"voltageSpecification":1063,"signalDomain":467,"breadboardFriendly":14,"title":1066,"shortDescription":1067,"bomCount":1068,"formulaCount":1047,"search":1069},[1039,1040,1062],"24v",{"kind":1042,"value":1064,"label":1065},"1.25–9V respeita a margem recomendada de 3V com entrada nominal de 12V; a regulação também exige as condições especificadas de carga, temperatura e potência","Ajustes nominais calculados","Regulador de tensão linear positivo ajustável LM317","Circuito de regulação de tensão CC com TI LM317KCS e entrada nominal de 12V. Os ajustes calculados até 9V respeitam a margem recomendada de 3V; a corrente utilizável exige avaliar a carga e o balanço térmico.",6,"regulador de tensão linear positivo ajustável lm317\ncircuito de regulação de tensão cc com ti lm317kcs e entrada nominal de 12v. os ajustes calculados até 9v respeitam a margem recomendada de 3v; a corrente utilizável exige avaliar a carga e o balanço térmico.\nregulador de tensão linear positivo ajustável lm317\ncircuito de regulação de tensão cc com ti lm317kcs e entrada nominal de 12v. os ajustes calculados até 9v respeitam a margem recomendada de 3v; a corrente utilizável exige avaliar a carga e o balanço térmico.\nlm317 adjustable positive linear voltage regulator\nadjustable dc voltage reference circuit using ti lm317kcs and nominal 12v input. calculated setpoints up to 9v respect the recommended 3v headroom; usable current requires a load and thermal budget.\npower_supplies\nregulador de tensão linear positivo ajustável\nlm317kcs\nu1\nresistor de filme metálico de precisão 0,25 w (1\u002F4w)\n240ω\nr1\npotenciômetro cermet linear \u002F trimpot\n5kω\nr2\ncapacitor cerâmico multicamadas (mlcc)\n0.1µf\nc1\ncapacitor eletrolítico de alumínio\n10µf\nc2\ndiodo retificador de silício padrão\n1n4007\nd1",1793836429696]