Chk-v9.04g Circuit Diagram -

: Converts 220V AC input into high-voltage DC (around +310V) via a bridge rectifier and a large filter capacitor. It also includes a step-down Switch Mode Power Supply (SMPS) that provides +18V for the cooling fan and IGBT driver, and +5V for the microcontroller.

: Uses the PWM signal to switch an Insulated Gate Bipolar Transistor (IGBT) . This high-power transistor switches current through the induction coil at high frequencies to generate the magnetic field.

For a detailed visual walkthrough of the board's layout and common test points, technical resources like the NXP Application Note for induction cookers provide excellent generic architectural guidance that matches the CHK-V9 series. chk-v9.04g circuit diagram

: Often a specialized 8-bit chip, such as an ST7FLITE09 or S3F84B8, that generates Pulse Width Modulation (PWM) signals to control the heating power.

: Monitors temperatures via thermistors located under the glass surface and the IGBT heatsink. These sensors prevent overheating by providing feedback to the MCU. Troubleshooting and Component Identification : Converts 220V AC input into high-voltage DC

, and HD4902 models). Understanding the circuit diagram of this board is essential for troubleshooting common issues like power failure, heating inconsistencies, or specific error codes (E1–E4). Core Functional Blocks of the CHK-V9.04G

The circuit is generally divided into several key stages that manage power conversion and user interface: : Monitors temperatures via thermistors located under the

The is a widely used control board found in many popular induction cookers , most notably within the Philips Viva Collection (such as the HD4931,

: Typically indicates a problem with the mains voltage being too low or too high.

: Often caused by a blown fuse or a failure in the AC-DC converter module (check the VIPer series or similar PWM ICs).