GM328A Transistor Tester DIY Kit

Automatic Multi-Component Detection: Automatically identifies NPN/PNP transistors, N/P-channel MOSFETs, JFETs, diodes, dual diodes, thyristors, SCRs, and resistors with instant automatic pinout identification.

ATmega328P Microcontroller Architecture: Powered by a high-performance DIP-28 socketed ATmega328P IC, allowing easy chip replacement or firmware updates for DIY electronics enthusiasts.

1.8-Inch Full-Color HD LCD Display: Features a 160 x 128 pixel graphic color screen displaying measured numeric parameters, component pinout diagrams, and graphical symbols simultaneously.

Built-in Signal Generator & Frequency Meter: Functions as a square wave signal generator, PWM pulse-width modulation generator (1\% - 99\%), and frequency meter (1 Hz - 2 MHz).

Capacitance & ESR Measurement: Accurately tests capacitance from 25 pF to 100 mF alongside Equivalent Series Resistance (ESR) measurements for power supply troubleshooting.

Rotary Encoder & One-Touch Control: Multi-functional rotary encoder switch supports single-button operation, menu navigation, and automatic power-off mode (drawing ultra-low approx 20 nA standby current).

Board & Component Construction: Built on a durable fiberglass PCB with DIP components, ZIF IC socket, rotary encoder control, and color LCD screen module.

Measurement Ranges & Specifications:

Resistance: 0.01 ohms - 50 M ohms.

Capacitance: 25 pF - 100 mF with 1 pF resolution.

Inductance: 0.01 mH - 20 H.

Power Supply Options: Powered via standard 9V PP3 battery or an external DC power supply (6.8V - 12V).

Crucial Operating Precaution: Always fully discharge capacitors before inserting them into the test sockets to avoid permanent damage to the microcontroller IC.

Essential Diagnostic Bench Tool: Position as a mandatory, low-cost component analyzer for electronics hobbyists, engineers, and repair technicians sorting unlabeled or salvaged parts.

Protective Shell Accessory Upsell: Recommend pairing with the custom-fit Acrylic Shell for GM328 Transistor Tester to protect the bare PCB from accidental bench shorts.

Recommended Cross-Sell Add-ons: Pair with Acrylic Shell for GM328, ESD Anti-Static Tweezers, 60W / 80W Soldering Tool Kits, and Digital Multimeters.

High-Turnover DIY Staple: A top-selling item for maker kits, university STEM laboratories, and prototyping component listings.