Save -15% Out of stock 220V to 9VAC 300mA EI Step-Down Transformer (Single Secondary)

220V to 9VAC 300mA EI Step-Down Transformer (Single Secondary)

Name: Buy 220V to 9VAC 300mA EI Step-Down Transformer (Single Secondary) Online in Egypt – 85.00 EGP | Micro Ohm Electronics
SKU: Trans_9v300mA
Price: 85.00 EGP
Availability: InStock

9VAC 300mA EI step‑down transformer with single secondary — ideal for small linear supplies. NOT 9‑0‑9.‎

ترانس 9 فولت 300 مللي أمبير ثانوي مفرد لمشاريع خفيفة وتقويم بسيط.

SKU Trans_9v300mA SKU SYS Xb7097 Availability In stock

Quantities are confirmed after reviewing your order. Orders are normally prepared and shipped within 3–5 business days. Online availability does not necessarily mean the product is currently available at the branch. تأكيد الكميات بيتم بعد مراجعة الأوردر، وتجهيز وشحن الطلب بيستغرق عادة من 3 إلى 5 أيام عمل. توافر المنتج على الموقع لا يعني بالضرورة توافره داخل الفرع، لذلك اعمل الأوردر مسبقًا لتأكيد الكمية وتجهيزه.

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Description

Overview 🔌

Compact EI transformer converting 220–240 VAC to 9 VAC @ 300 mA (≈2.7 VA). Single secondary (NOT 9‑0‑9). Great for small sensor/logic rails via rectifier + regulator.

Key Features ⭐

Primary: 220–240 VAC, 50/60 Hz
Secondary: 9 VAC (RMS), 0.3 A
Approx. power: 2.7 VA
Open-frame EI core

Detailed Specifications 📐

Parameter	Value	Notes
Input	220–240 VAC	50/60 Hz
Output	9 VAC @ 0.3 A	Single secondary
Power	≈2.7 VA	Vrms × I
Regulation	Not specified	Typical EI range (assumption)

Pinout & Wiring 🧰

Side	Terminals	Function
Primary	P1 – P2	220–240 VAC (L/N)
Secondary	S1 – S2	9 VAC output

Performance & Calculations 📊

No‑load DC after bridge: 9·1.414 − ~1.4 ≈ ≈11.3 V.
Example capacitor for ΔV=1 V at 0.3 A: C ≈ 0.3/(2·50·1) ≈ 3,000 µF.

Applications ⚙️

Small linear DC supplies, logic-level circuits, relays, sensors, and low-power audio preamps.

Installation & Safety 🔒

Use primary fuse and proper insulation; keep clearances between primary and secondary wiring.

Testing & Commissioning 🧪

Verify 9 VAC at no‑load; check regulation under load up to 300 mA.

Videos ▶️

Transformers Explained – The Engineering Mindset: https://www.youtube.com/watch?v=jcY4QN7awEc
Bridge Rectifier with Capacitor Filter: https://www.youtube.com/watch?v=EfSW_9lx1VE
Bridge Capacitor Value Calculation: https://www.youtube.com/watch?v=J9HsLWmtBnE

نظرة عامة 🔌

محول EI صغير يحول 220–240 VAC إلى 9 VAC عند 300 مللي أمبير (≈2.7 VA). ثانوي مفرد (مش 9‑0‑9).

المواصفات السريعة ⭐

المدخل: 220–240 فولت
المخرج: 9 فولت AC / 0.3 أمبير
قدرة تقريبية: 2.7 VA

التوصيلات 🧰

الجانب	الأطراف	الوصف
ابتدائي	P1 – P2	دخل 220–240 VAC
ثانوي	S1 – S2	9 VAC

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