Short answer: don’t just connect and “see what happens.” You might damage the converter.
Let’s break it down simply 👇
Your compressor
- 12V, 70W
- Current needed = Power ÷ Voltage = 70 ÷ 12 ≈ 5.8A
👉 So your compressor needs ~6 amps (and maybe 8–10A peak when starting).
Your AC → DC converter
You said:
- It’s 12V
- But you don’t know the watt or amp rating
⚠️ This is the risky part.
What can go wrong?
If your converter is:
- Less than ~6A → it will:
- Overheat 🔥
- Shut down ❌
- Or get damaged 💀
What you should do FIRST (very important)
Look at the label on the converter. You’ll see something like:
- 12V 2A ❌ (too weak)
- 12V 5A ⚠️ borderline
- 12V 10A ✅ good
👉 If it doesn’t show amps, check watts:
- 12V 72W = 6A (minimum you need)
Safe rule
- Minimum: 12V 6A
- Better: 12V 8–10A (recommended for motor startup)
Can you test it anyway?
If you REALLY want to try:
- Do it for 1–2 seconds only
- Watch for:
- Voltage drop
- Noise
- Heating
👉 If it struggles → stop immediately
My honest advice
Motors (like compressors) are not forgiving.
Random testing = high chance of killing your power supply
If you want, send me a photo or specs of your converter—I’ll tell you 100% safe or not.
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