All parts make up the induction cooker circuit diagram, helping you have a more detailed and clear view of the operating principles of this cooker line.
In the induction cooker circuit, it is usually made up of parts such as:
1: Part: Power Source And Rectifier - Power source and rectifier circuit:
- This is the input part of the induction cooker control circuit. The power source and rectifier circuit have components such as fuses (helps protect high-frequency noise filter circuits), overcurrent, and rectifier diode bridges that convert to DC voltage.
2: SMPS part - On-off switching source, pulse source:
SMPS: acronym for the English phrase: "Switch Mode Power Supply". In particular, the pulse source is responsible for creating DC voltage levels. This part is responsible for providing DC voltage to other parts of the induction cooker including:
• 5V DC voltage: will supply the MCU microprocessor block.
• 12V voltage: will supply the cooling fan.
• Voltage 15V - 18V: will supply the pulse amplifier stage (or: IGBT Drive power scale).
3: Part: IGBT - Power coil with pins G-C-E
The IGBT power coil is the main power consuming component of the induction cooker. It is responsible for quickly opening and closing high frequencies and creating high-frequency current.
This current flows through the coil of the induction cooker, from where it creates a magnetic field within a few millimeters on the stove glass and heats the bottom of the pots and pans.
4: Part: Coil Panel - Coil Panel of induction cooker:
You may not know: each type of induction cooker is equipped with a Panel coil.
This coil has the role of emitting a magnetic field source, this magnetic field will create a Foucault current on the bottom of the pot, immediately, the bottom of the pot will generate heat. Helps heat and cook food.
5: Part: IGBT Drive - Final amplifier stage:
The IGBT Drive part does the best job and function of amplifying electrical pulses. From 15V to 18V voltage before sending it to pin G of the IGBT power supply.
6: Part: Temp - Temperature sensors:
High-end imported induction cookers or domestically produced induction cookers are generally equipped with 2 temperature sensors.
In particular, a temperature sensor is attached to the bottom of the cooking utensil used to monitor the temperature of pots, pans, and pans when you cook food. If during the cooking process, the pot or pot runs out of water, the temperature will immediately increase rapidly and the induction cooker will be very hot.
It is possible that the stove will emit a warning signal with error code E... The CPU must quickly disconnect power (maybe the induction stove will also automatically shut off) to prevent the lights from operating at full capacity. This helps users cook more safely and save more energy.
The remaining sensor will be mounted on the power shell to monitor the temperature of the IGBT power shell.
In case the IGBT power supply is overheated, the CPU will immediately stop oscillation to the IGBT power supply to close the voltage source.
Helps protect components and parts equipped inside the induction cooker circuit diagram.
7: MCU part (Microprocessor block):
MCU operates according to the principle pre-programmed in the original program. This microprocessor block will work after receiving data that the user has set up to operate on the control panel of the induction cooker. Then the MCU part will emit an electric pulse to control the operating capacity.
The duration and pulse width of the induction cooker can be changed by the electric pulses emitted, due to pre-programmed software.
For example, when we cook and set the cooking temperature to high, the electric pulse emitted will be wider and the opening time of the IGBT will increase. Conversely, when you set the temperature down, the electrical pulse is emitted at a smaller size, the IGBT time will decrease.
The MCU is even smarter when it can detect whether or not there are pans, pots, and pans on the stove (stove recognition function). If there are no pots, pans, or empty pots and pans, it will automatically turn off the power supply.
MCU also has the ability to control the temperature of pots and pans. If the temperature is too high, it will "command" the heater to temporarily stop to protect the heater and other components inside the induction cooker circuit.
8: Keyboard part - Keys:
The buttons on the induction cooker control panel are the settings that users often use when cooking. Mainly the touch keys are super responsive. And the CPU is responsible for controlling these keys.
9: FAN part - Cooling fan:
This is an indispensable part in any induction cooker circuit diagram. Because all induction cookers today are equipped with radiator fans, also known as cooling fans. It is responsible for cooling the IGBT and the components and parts inside the induction cooker circuit.
10: Synchronous Signal part - Synchronous signal\:
In the circuit diagram of the induction cooker, there must definitely be a synchronous signal part. This signal is emitted from the two working coil ends of the induction cooker. It assists the CPU in detecting the presence of pans, pots, and pans being placed on the stove.
11: Buzzer - Bell part:
The bells on induction cookers are usually beeping, beeping, etc. Notifications and warnings so that users can easily recognize when pressing the adjustment buttons or setting the timer. The bell also rings when the induction cooker has error codes such as E0, E1, E2,... to E9.
12: Display - Display:
Any induction cooker circuit diagram is equipped with Displays, also known as LED systems. It is usually red or blue. The LED light colors will be displayed to let users know the heating, cooking modes and temperature of the induction cooker.
13: System Voltage - System Curren - Voltage and current of the stove:
System Voltage - System Curren are signals that let the CPU processor know how the voltage and current status of the induction cooker is operating.
14: OC (Over Curren) part - Overcurrent alarm:
When the stove operates at high capacity, OC (Over Curren) will report an overcurrent to let the CPU processor know about the overcurrent situation and handle it by letting the induction cooker rest, helping the induction cooker not to be damaged.
15: OV (Over Voltage) part - Overvoltage alarm:
OV (Over Voltage) plays an extremely important role in the induction cooker circuit. Because it is a permanent part that always monitors the overvoltage condition on the coil.
Notify the signal to the CPU processor block immediately if the induction cooker has an overvoltage condition on the coil so that the CPU gives the cooker a rest, preventing high voltage from damaging the induction cooker.
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