VTSET24/VTSET26
12.02.2010
©Velleman
nv
7
6. Transistor
hFE
Measurements
1) Connect the black test lead (-) to the "COM" jack and the red test lead
(+) to the "mA" jack.
2) Select the hFE-range with the Range switch.
3) Determine whether the transistor is of the NPN- or PNP-type and locate
the emitter, the base and the collector. Insert the leads into the proper
holes in the included transistor socket.
4) Connect the black test lead (-) to the "COM" terminal and the red test
lead (+) to the other terminal of the transistor socket.
5) The display will show the approximate hFE-value at the moment of
testing. Base current 10µA, Vce 2.8V.
Specifications
Maximum accuracy is guaranteed for a one-year period after calibration.
Ideal circumstances require a temperature of 23°C (
±
5%) and a max.
relative humidity of 75%.
1. General
Max. voltage between
terminal and earth
500VDC or VAC rms (sine wave)
Display
3 ½-digit LCD, 2 - 3 readings per sec.
Fuse Protection
200mA range : F 0.5A/250V (resettable)
10A range : F 10A/250V
Power Supply
2x AAA (LR03C, not incl.)
Ranging Method
Manual
Polarity Indication
" - " displayed
Overrange Indication
" 1 " displayed automatically
Dimensions
126 x 70 x 27mm
2. DC
Voltage
Range Resolution
Accuracy
200mV 100
µ
V
±0.5% of rdg ±2 digits
2000mV 1mV
±0.8% of rdg ±2 digits
20V 10mV
200V 100mV
500V
1V
±1.0% of rdg ±2 digits
Overload protection: 220Vrms AC for the 200mV range and 500VDC or
500Vrms AC for other ranges.
3. AC
Voltage
Range Resolution
Accuracy
200V
100mV
±1.5% of rdg ±10 digits
500V 1V
Overload protection: 500VDC or 500Vrms for all ranges
Frequency range: 45Hz - 450Hz
