High-stabilized 3-channels programmable linear voltage/current outputs, with four 3-digit clear LED display
Digital panel & rotary coding switch, coarse/fine control
3 output modes: independent/series/parallel
Tracking mode: output of CH1 & CH2 are automatically connected into series or parallel
Four groups of Save/Recall, Lock, output ON/OFF
Constant voltage (CV)/constant current (CC) source
Overload and reverse polarity protection, intelligent temperature-controlled fan cooling
USB interface and remote control, free PC software (model YB3303D, 3305D)

Technical specifications:
Output: 3 channels, two variable and one fixed outputs
Voltage output: (0~30V) x2, 2.5V/3.3V/5V fixed
Voltage resolution: 10mV /100mV
Voltage accuracy: ≤ 0.5%+ 2dgt
Current output: (0~3A) x2, 3A fixed (model Yb3303 /D), (0~5A) x2, 3A fixed (model Yb3305 /D)
Current resolution: 10mA
Current accuracy: ≤ 0.5%+ 2dgt
Voltage regulation (Ch1 & Ch2):
Load effect: ≤ 0.01%+3mV
Source effect: ≤ 0.01%+3mV
Ripple & noise: ≤1mVrms (2mVrms)
Temperature coefficient: ≤300 ppm/℃
Current regulation (Ch1 & Ch2):
Load effect: ≤ 0.02%+3mA
Source effect: ≤ 0.02%+3mA
Ripple & noise: ≤3mArms (6mArms)
Fixed output (Ch3):
Voltage regulation: ≤25mV
Ripple & noise: ≤2mVrms
Communication & remote control: via USB interface (optional)
Dimensions: 250x150x310mm
Weight: 7.0 /10.0kgs approx.
Optional accessories: connection cable