30V / 5A Linear DC Regulated Power Supply with Output On/Off

About.

The Vartech 3005 B is a high-quality single-output transformer-based linear DC regulated power supply with a 0–30 V, 0–5 A output range. It features a 4-digit multicolour LED display for both voltage and current, automatic CV/CC mode switching, and a unique Output Pause function that allows live voltage adjustment while the output is switched off - so users can pre-set a voltage before connecting the load. Short-circuit and constant-current protection are built in. Suitable for bench-top laboratory, electronic service, and educational use.

• 0–30 V, 0–5 A - single output, fully variable
• Linear (transformer-based) - very stable and reliable
• Automatic CV / CC mode switching
• 4-digit multicolour LED display for V and I
• Output On/Off (pause) - live voltage adjustment with output off
• Short-circuit and constant-current protection
• Input: 220 V AC ±10 %, 50 Hz

Specifications.

Output Voltage

0–30 V (fully variable)

Output Current

0–5 A (fully variable)

Type

Linear (transformer-based), Single output

CV Line Regulation

≤ 0.01 % + 5 mV

CV Load Regulation

≤ 0.1 % + 5 mV

CC Line Regulation

≤ 0.01 % + 5 mA

CC Load Regulation

≤ 0.1 % + 5 mA

Ripple & Noise (CV)

≤ 10 mV rms

Ripple & Noise (CC)

≤ 10 mA rms

Protection

Constant current & short-circuit protection

Display

2 × 4-digit LED (V and I)

Indication Accuracy

≤ (1 % + 1 digit)

Output On/Off

Yes - with live voltage control while output is off (pause function)

Power Supply

220 V AC ±10 %, 50 Hz ±2 Hz