⚡🔄 12V AC to AC Power Supply
 
(12V AC Output • Barrel Plug • Unregulated)

This adapter delivers 12V of alternating current (AC) directly to devices that require raw AC input. It’s used in control systems, audio processors, and legacy electronics that perform their own internal rectification and voltage regulation.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 12V AC (unregulated, 1A)
Connector: Barrel plug
Polarity: None — AC alternates; both barrel contacts carry current
Common aliases: “12V AC wall wart,” “AC/AC transformer,” “AC power module”
 
🖥️ Compatible Devices
🟦 Control & Automation Systems
X10 home automation modules
Alarm panels and relay controllers
HVAC interface boards and thermostats
Access control systems and gate modules
🟦 Audio & Musical Equipment
Line 6 POD XT and POD 2.0
Digitech GNX series multi-effects pedals
Alesis drum modules (select models)
Legacy rack-mounted preamps and processors
🟦 Embedded & Legacy Electronics
DSL modems and line drivers (older models)
Lighting controllers and stage gear
DIY analog synth modules with onboard rectifiers
 
✅ Common Uses
🔌 Powering devices that require AC input, not DC
🧩 Replacing lost or damaged OEM 12V AC adapters
🧪 Feeding internal transformers or bridge rectifiers
🧵 Essential entry for audio techs, control system integrators, and embedded hardware builders
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔄 Output: 12V AC, unregulated
🔌 Barrel connector
🔁 No polarity — both barrel contacts alternate current
 
⚠️ Things to Watch Out For
❗ Not interchangeable with 12V DC adapters — using DC may damage AC-only devices
🔌 Do not use with devices expecting regulated DC input
🧯 Always confirm “AC IN” label or manual before connecting
📉 Voltage may vary under load — not suitable for sensitive digital electronics without internal regulation
 
🛠️ Quick Tips for Beginners
🧭 Look for “AC IN 12V” or “AC 12V~” on the device label
🔌 Never substitute with a DC adapter — waveform and polarity are incompatible
🧪 Use a multimeter in AC mode to verify output
🧯 Label clearly to avoid confusion with DC supplies in your toolkit
🧵 Essential for gear with internal rectifiers or transformer-based power stages