{"product_id":"18-0-18-stepdown-transformer-1a","title":"18-0-18 Stepdown Transformer 1A","description":"\u003ch1\u003e18-0-18 Stepdown Transformer 1A\u003c\/h1\u003e\n\u003cp\u003eThis 18-0-18 stepdown transformer delivers a dual secondary output of 18V-0-18V at 1A, making it a reliable choice for building linear power supplies and audio amplifier circuits. It is suitable for hobbyists, students, and engineers working on low-voltage AC-to-DC conversion projects.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInput: 230V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003eOutput: 18V-0-18V AC (dual secondary)\u003c\/li\u003e\n\u003cli\u003eCurrent rating: 1A\u003c\/li\u003e\n\u003cli\u003ePower rating: 36VA\u003c\/li\u003e\n\u003cli\u003eType: Stepdown, center-tapped\u003c\/li\u003e\n\u003cli\u003eDimensions: Approximately 70mm x 60mm x 50mm (L x W x H)\u003c\/li\u003e\n\u003cli\u003eWeight: Approximately 400g\u003c\/li\u003e\n\u003cli\u003eMounting: Screw terminals for input and output connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cp\u003eThis transformer works with standard rectifier circuits (bridge rectifier), voltage regulator ICs (LM317, LM7818, LM7918), and filter capacitors. It is commonly used with Arduino, ESP32, and Raspberry Pi projects that require a regulated DC power supply.\u003c\/p\u003e\n\n\u003ch2\u003eWhat you can build with it\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual-rail power supply for audio preamplifiers or op-amp circuits\u003c\/li\u003e\n\u003cli\u003eAdjustable bench power supply using LM317 and LM337 regulators\u003c\/li\u003e\n\u003cli\u003eAC-to-DC converter for powering microcontroller-based projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component from Compoden comes with access to an AI build companion — delivered via QR code, email, or WhatsApp — that helps you wire and program this transformer into a working project. With over 10 years of experience supplying makers and institutions across India, we ensure you get the right part and the support to use it. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.\u003c\/p\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between 18-0-18 and 0-18?\u003c\/summary\u003e\n\u003cp\u003eAn 18-0-18 transformer has a center-tapped secondary, providing two 18V AC outputs (one positive, one negative relative to the center tap). A 0-18 transformer gives a single 18V AC output. The center-tapped version is used for dual-rail power supplies.\n\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat payment options are available for 18-0-18 Stepdown Transformer 1A?\u003c\/summary\u003e\n\u003cp\u003eWe accept UPI, all major credit\/debit cards, and Cash on Delivery (COD) for orders across India. COD is available on all orders with no extra charges.\n\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow long does delivery take?\u003c\/summary\u003e\n\u003cp\u003eWe ship 18-0-18 Stepdown Transformer 1A across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3–7 business days depending on your location.\n\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"18-0-18 Stepdown Transformer 1A\",\n  \"description\": \"18-0-18 stepdown transformer with 1A current rating, ideal for audio amplifiers and power supply projects.\",\n  \"sku\": \"TRF-18-0-18-1A\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Generic\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"price\": \"549.08\",\n    \"priceCurrency\": \"INR\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"url\": \"https:\/\/compoden.in\/products\/18-0-18-stepdown-transformer-1a\"\n  },\n  \"author\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Compoden\"\n  },\n  \"mainEntityOfPage\": {\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the difference between 18-0-18 and 0-18?\",\n        \"acceptedAnswer\": {\n          \"@type\": \"Answer\",\n          \"text\": \"An 18-0-18 transformer has a center-tapped secondary, providing two 18V AC outputs (one positive, one negative relative to the center tap). 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