[NK] Đồng hồ vạn năng Wellink HL-903

Đo lường Phạm vi Độ chính xác Giá trị DCV 0.1V/0.5V/2.5V/10V/50V/250V/1000V ±3% F.S. 1000V for ±5% F.S Input impedance 20K ohm/V Logic Logic Lo: 0.7 ± 0.3V Hi: 2.3 ± 0.3V Input impedance: 10MΩ DCmA 0/50µA/2.5mA/25mA/250mA/10A (50µA at DC 0.1V position) ±3% F.S for 10A ±5% F.S Terminal voltage drop 250mA (100mV for 50µA) ACV 0/10V/50V/250V/1000V ±4% F.S. 1000V for ±5% F.S Input impedance 9K ohm/V dB AC 10V/50V/250V/1000V -10dB~+62dB 0dB/0.775V, 1mw/600Ω 10V:x1.50V:+14dB, 250V:+28dB, 1000V:+40dB Resistance X1: 0-0.2Ω - 2KcΩ center 20Ω Within 3% of Arc Battery 1.5V x 2.9V x 1 X10: 0-2Ω - 20KΩ center 200Ω X100: 0-20Ω - 200KΩ center 2000Ω X1K: 0-200Ω - 2MΩ center 20KΩ X10K: 0-2KΩ - 20MΩ center 200KΩ Buzzer Buzz Buzzer 120Ω or less Battery test 1.5v/9v BATT Good-?Bad color coded scale Load current: 1.5v:250mA 9v: 25mA Leakage Current (LI) 0-150µA at x 1K range, 0-15mA at x 10K range, 0-1.5mA at x 100 range, 0-15mA at x 1 range ±5% of Arc Terminal to terminal Voltage (LV) Common to each Ω range 3V – 0V ±5% of Arc Voltage applied, across terminal while Ω is measured DC current amlification factor (hFE) Transistor hFE: 0-1000 (in x 10 Ω range) Insert hfe terminal directly