The **GMC-800-R** is a compact, vertical-style Geiger counter produced by GQ Electronics. It is designed for detecting alpha, beta, gamma, and X-ray radiation. Below is a breakdown of its primary electronic components and features. --- ### 1. Core Electronic Components The device relies on several key hardware modules to function as a digital radiation detector: | Component | Description | Function | | :--- | :--- | :--- | | **Geiger-Müller (GM) Tube** | M4011 Glass Tube (Standard) | The primary sensor; ionizes gas when radiation passes through, creating a pulse. | | **Microcontroller (MCU)** | ARM-based Processor | Processes pulse signals, calculates CPM/uSv/h, and manages the UI. | | **High Voltage Module** | Step-up DC-DC Converter | Boosts battery voltage to ~400V-500V required to energize the GM tube. | | **Display Panel** | Color TFT LCD | Provides a visual interface for real-time graphing and digital readouts. | | **Internal Flash Memory** | Non-volatile Storage | Stores historical data logs for later analysis on a PC. | --- ### 2. Detection Capabilities While the electronics are compact, the GMC-800-R is designed for multi-type radiation detection: * **Beta ($\beta$) & Gamma ($\gamma$):** Highly sensitive detection via the GM tube. * **X-Rays:** Detects medical and industrial X-ray leakage. * **Alpha ($\alpha$):** Limited detection (only high-energy alpha particles can penetrate the glass tube wall). --- ### 3. Connectivity and Power The circuit board integrates modern power management and data transfer interfaces: * **USB Interface:** Uses a Type-C port for both battery charging and data communication with the GQ Geiger Counter Softwares. * **Battery:** Powered by a rechargeable 3.7V Li-Ion battery (usually 14500 or 1000mAh internal). * **Audio/Visual Feedback:** Includes a piezoelectric buzzer for "clicks" and a flashing LED for each particle detection event. --- ### 4. Technical Specifications Summary ```json { "Model": "GMC-800-R", "Display": "Color TFT", "Connectivity": "USB Type-C", "Data_Logging": "Internal Flash (Fixed Interval)", "Alarm": "Visual/Audible (Customizable Thresholds)", "Software_Support": "Windows, Mac, Linux (via GQ software)" } ``` ---