220V to 12VAC 300mA EI Step-Down Transformer (Single Secondary)
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From the shop's description
Overview 🔌 EI laminated transformer providing 12 VAC @ 300 mA from 220–240 VAC mains. Single secondary only (NOT 12‑0‑12) . Key Features ⭐ Primary: 220–240 VAC, 50/60 Hz Secondary: 12 VAC (RMS), 0.3 A Approx. power: 3.6 VA Detailed Specifications 📐 Parameter Value Notes Input 220–240 VAC 50/60 Hz Output 12 VAC @ 0.3 A Single secondary Power ≈3.6 VA Vrms × I Pinout & Wiring 🧰 Side Terminals Function Primary P1 – P2 220–240 VAC Secondary S1 – S2 12 VAC Performance & Calculations 📊 No‑load DC after bridge: 12·1.414 − ~1.4 ≈ ≈15.6 V . Example capacitor for ΔV=1 V at 0.3 A: 3,000 µF . نظرة عامة 🔌 محول EI يُخرج 12 VAC عند 300 مللي أمبير من 220–240 VAC . ثانوي مفرد (مش 12‑0‑12) . الأداء والحسابات 📊 DC بدون حمل بعد القنطرة ≈ 15.6 فولت؛ مكثف تموج ~3,000 µF لكل 1 فولت تموج عند 0.3 A.
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