FNIRSI CircuitMate TC4 – All-in-One 10MHz Digital Oscilloscope, Precision Signal Generator & Intelligent Transistor Tester (48MSa/s Sampling Rate)

The FNIRSI CircuitMate TC4 is a revolutionary compact tool engineered for versatility, precision, and mobility. Designed for modern electronics enthusiasts, technicians, students, and engineers, this 3-in-1 diagnostic powerhouse combines the functionalities of a high-speed digital oscilloscope, a fully programmable function generator, and a smart component tester — all within a portable palm-sized form factor. Whether you're developing, repairing, analyzing, or teaching electronics, the CircuitMate TC4 offers unmatched performance, usability, and value.

? 1. Precision Digital Oscilloscope – 10MHz Bandwidth | 48MSa/s Sampling

Uncover hidden signal anomalies, trace high-speed waveforms, and troubleshoot circuitry in real-time with professional-grade accuracy:

• Bandwidth: 10MHz – suitable for most analog and digital signal analysis

• Real-Time Sampling Rate: 48 Mega Samples per second ensures clear waveform fidelity

• Display: High-contrast TFT LCD screen for crisp waveform viewing

• Trigger Modes: Auto, Normal, and Single – capture everything from continuous waveforms to transient pulses

• Voltage Range: Wide input range with real-time voltage, frequency, and cycle display

• Built-in Storage: Save and recall previous waveform captures for comparison

Ideal for debugging microcontroller outputs, checking analog audio signals, and validating pulse width modulation (PWM) circuits.

⚙️ 2. Versatile Signal Generator – Customizable Waveform Output

The built-in signal generator makes TC4 a true workbench multitool. Generate test signals to inject into circuits for design validation, repair, or simulation:

• Output Types: Sine, Square, Triangle, Sawtooth, Pulse, and Arbitrary

• Frequency Range: 1Hz to 1MHz (adjustable with fine resolution)

• Adjustable Duty Cycle: Ideal for logic-level and analog circuit response testing

• Amplitude Control: Simulate real-world signals to test response curves and behaviors

• Phase & Frequency Modulation Options for waveform shaping

Perfect for simulating sensor signals, clock pulses, or audio tones in embedded systems, analog electronics, or automation control.

? 3. Intelligent Transistor Tester & Passive Component Analyzer

Empowered with advanced detection algorithms and a symbol-rich display, the TC4 identifies, tests, and measures a broad range of components with zero manual configuration:

• Supported Devices:

  • Bipolar Transistors (NPN, PNP)

  • Field Effect Transistors (MOSFETs – N-Channel, P-Channel)

  • JFETs, IGBTs, Thyristors, SCRs

  • Diodes, LEDs, Triacs, Zener diodes

  • Capacitors (with ESR), Inductors, Resistors, and more

• Displays:

  • Pin configuration (with graphical diagram)

  • Gain (hFE), Threshold voltage, Leakage current, ESR, Forward voltage, Capacitance & Resistance values

Eliminates guesswork and improves repair turnaround times by instantly identifying unknown components and testing used parts.

? Additional Technical Features & Design Benefits

• ? Rechargeable Battery: Long-life lithium battery with USB Type-C charging for portable use

• ?️ One-Hand Operation: Simple button layout for fast navigation, even with gloves

• ? Rugged Construction: Durable ABS casing with anti-slip texture for field use

• ? Multi-Language Interface: Supports multiple UI languages for international users

• ? Firmware Upgradable: Future-proof via USB-based firmware updates

• ? Compact Form Factor: Easily fits in toolboxes, lab drawers, or your pocket

? Ideal For:

• Electronics Engineers & Technicians

• STEM Students & Educators

• Hobbyists & DIY Circuit Builders

• Repair Professionals & Field Service Engineers

• Embedded System Developers

Whether you're designing an amplifier, reverse-engineering a control board, or teaching signal theory, the FNIRSI CircuitMate TC4 is your reliable go-to companion.

? Product Highlights at a Glance: