Multi-functional transistor tester for automatic detection of NPN and PNP transistors, N channel, P channel, MOSFET and JFET, diodes, dual diode, thyristor, automatic identification of the transistor pinout. It also can be used for frequency measurement and PWM signal generator.

Note : HW-849A on board working remains same. 

Note: The capacitor must be discharged before measuring capacitance. Otherwise, there is a high possibility that the meter will be damaged.

Features:

• Test NPN and PNP triode common emitter current amplification factor, base-emitter threshold voltage, and collector-emitter leakage current at turn-off.
• Identification of Darlington transistors through triode base-emitter threshold voltage and high current amplification factor.
• Detect power diodes and FET built-in protection diodes.
• Test FET gate-source turn-on threshold voltage, drain-source on-resistance, and gate-source capacitance.
• It can measure up to 2 resistors at a time, so the adjustable resistors of the three feet can also be measured. If the adjustable resistor is adjusted to the endpoint, only one resistance value can be measured.
• For capacitors larger than 90nF, the equivalent series resistance (ESR) is measured at the same time. The resolution of the equivalent series resistance is up to 0.01Ω.
• Resistance measurement: Max. 50MΩ
• Resistance resolution: 0.01Ω
• Capacitance measurement: 25pF~100mF
• Capacitance resolution: 1pF
• Inductance measurement: 0.01mH~20H

Package Includes:

• 1 x Soldered GM328A Transistor Tester DIY Kit （Black English Version Assembled）