DollaTek GM328A LCD Transistor Tester Diode ESR Meter PWM Square Wave Generator Soldered Module

• The processor uses high-performance single-chip ATMEAG328P DIP-28. With IC seat.
• Display unit uses 160x128 pixel color display, the whole screen character number is 8x20, color depth is 16 bits, graphics display component symbol.
• Rotary code switch control, one-button measurement, automatic shutdown.
• Powered by a 9V laminated battery, it can also be powered by a power adapter. The current is about 30mA, and the current is about 20nA after shutdown.
• Automatic detection of NPN and PNP transistors, FETs, diodes, dual diodes, thyristors, thyristors, automatic identification of the above transistor pin distribution.

Description: 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. Specifications: Type: Assembled Tester Display: 1.8inch 160*128 LCD Input voltage: DC 6.8V-12V Operating current: about 30mA, measured when inputting 7.5V DC voltage Resistance measurement: Max. 50MΩ Resistance resolution: 0.01Ω Capacitance measurement: 25pF~100mF Capacitance resolution: 1pF Inductance measurement: 0.01mH~20H PCB size: 7.5 x 6cm / 2.95 x 2.36in Product weight: 50 Package size: Approx. 10 x 7 x 2cm / 3.94 x 2.75 x 0.8in Package weight: 53g / 1.9oz Features: 1. Test NPN and PNP triode common emitter current amplification factor, base-emitter threshold voltage, collector-emitter leakage current at turn-off. 2. Identification of Darlington transistors through triode base-emitter threshold voltage and high current amplification factor. 3. Detect power diodes and FET built-in protection diodes. 4. Test FET gate-source turn-on threshold voltage, drain-source on-resistance, gate-source capacitance. 5. 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. 6. 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. Package include: 1 x Tester