Provavolvole in valigia Duovac,tutte le valvole, i tubi e gli occhi magici per audio e radio

📘 Documentation

👉 Full user manual:
https://www.radioelec.com/images/Image/Documentation/DuoVac_user_guide.pdf

⚙️ Duovac Specifications

📏 General

• Dimensions: 330 × 240 × 140 mm
• Weight: 4.3 kg

🔌 Power Supply

• 220–230 V / 50–60 Hz (115 V on request)
• Can operate on 12 V battery (converter optional)
• Power consumption:
  • 25 to 35 VA on mains
  • approx. 2 A on 12 V ( with a DC / AC converter )
• Fuse: 1 A fast (5 × 20 mm)

🧠 Measurement System

• Mode: pulsed measurement
• 8-bit microprocessor (12 MHz)
• ADC: 10-bit (1024 points)
• Measurement duration: 800 µs
• Interval between measurements: 0.5 seconds
• Accuracy: better than ±5% ±1 digit

🔋 Filament Supply

• Voltages: 4 V / 5 V / 6.3 V (front panel selection)
• Max current: 3.5 A
• Regulated output (±5%)
• Floating supply (supports directly heated tubes)

⚡ Adjustable Voltages

• Grid 1: 0 to –100 V
• Grid 2: 15 to 350 V
• Plate voltage: 2 to 500 V

📊 Measurements

• Max plate current: 340 mA
• Max grid 2 current: 60 mA

Display Resolution

• Grid 1: 0.1 V ±1 digit
• Grid 2: 1 V ±1 digit
• Plate voltage: 1 V ±1 digit
• Plate current:
  • 0.1 mA up to 34 mA
  • 1 mA above 34 mA

🛡️ Protection

• Short-circuit protection
• Connection error protection
• Automatic current limiting

💡 The Duovac offers an excellent balance between portability, ease of use, and measurement accuracy, making it ideal for fast and reliable testing of audio and radio tubes.