Pin 7: CPU pulse input. Pin 8: Ground. Pin 9: This pin is the common end of the seven negative electrodes of the internal continuous current diode, and the positive electrode of each diode is connected to the collector of each Darlington tube. When used for inductive load, the pin is connected to the positive electrode of the load power supply to realize continuous flow.
The first pin GND is the power source. Pin 2 VCC is connected to the positive terminal of the 5V power supply. Pin 3 V0 is the contrast adjustment end of the LCD display, the contrast is weakest when connected to the positive power supply, and the contrast is highest when grounded power supplyHigh will produce "ghost", use can be adjusted by a 10K potentiometer).
The CPU pin function of the induction cooker is used to control the working circuit. You can understand that HIGHWAY13A induction cooker is like a country, and the CPU pin function is the central government.
Grounding, PORT0, mains detection, IGBT tube temperature detection, furnace surface temperature detection, operating voltage, PORTPORTPEAC, current detection, IGBT tube high voltage protection, synchronous input negative, synchronous input positive. s007 is an American induction cookerThe CPU pin number used describes the input/output (I/O) operating voltage value (V).
Pin action: OB2226SPEncapsulated with DIP7 pin.
Yes, but the 8-pin should be connected to the Power Management Integrated Circuits, which is the chip responsible for the transformation, distribution, detection and other power management duties in the electronic equipment system.
Fill a jumper on the R501 and R512 components according to the figure, so that the 4 pins of VIPer12A are connected with the D506 negative pole. The switching power supply after technical modification, the circuit is basically with the Jiuyang JYCP-21S55C motherboard switching power supplySame road. Stable performance. This technical improvement method is basically applicable to the new Jiuyang induction cooker using OB2226AP power chip.
OB2226 is widely used in low-power AC/DC off-line switching power supplies, such as induction cookers, liquid crystal power supplies and other devices. The OB2226 series has two packaging processes, one is the OB2226SP using a 7-pin DIP package, and the other is the OB2226CP and OB2226AP using an 8-pin SOP package.
The first pin GND is the power source. Pin 2 VCC is connected to the positive terminal of the 5V power supply/h2>
1, input and output. According to the query of the national grid, induction cooker EM78P458A is a programmable single-chip chip, its pins are divided into two groups: input and output pins and power supply pins.
2, the input or output of the port is determined by the programmer, as for the input or output can be distinguished according to the hardware circuit, such as the input connected to the key, the output connected to the digital tube or IGBT.
3. The first pin GND is the power supply ground. Pin 2 VCC is connected to the positive terminal of the 5V power supply. Pin 3 V0 is the LCD contrast adjustment endThe contrast is weakest when the positive power supply is connected, and the contrast is highest when the grounded power supply is connected (the contrast will produce "ghost" when the contrast is too high, and the contrast can be adjusted by a 10K potentiometer when used).
4, power pin: provide the power supply of the MCU, including VCC (positive power supply) and GND (ground) pins. Input/Output pins (I/O pins) : Used to connect external devices or sensors and can be configured in input or output mode. The output mode can be used to control external devices, and the input mode can receive external signals.
5, RST pin. This type of pin belongs to compoundPin, the continuous input of more than two machine cycles of high level can trigger the mechanism, complete the reset initialization of the MCU, the MCU can start from scratch to execute the program. PSEN pin. The full name of this type of pin is the program memory allowed output control end.
6, pin function: 1 INV error amplifier inverting input. 2 Output pin of COMP error amplifier. A feedback compensation network is connected between this pin and the INV pin. 3 MULT multiplier input pin. The full range of AC voltage is distributed 2V to the MULT pin.
1, this is a digital drive chip 1 pin ground, 2,3,5,6,12,13,17,18 pin drive three common anode digital tube. 14 pin controls other chips. 11 pin alarm 16 pin input voltage change. 4,15 pin control digital changes. 20-pin power supply positive electrode. I have my own schematics, and I post them online. I don't.
2. S3F9454BZZ-DK94 is a single chip computer for air conditioning. S3F9454 is an MTP single-chip COMS microcontroller with 4kByte FLASH ROM that can be erased multiple times, widely used in timing/counting, PWM, multichannel A/D conversion and other fields.
3, induction cooker chip S3F9454BZZ-DK94 are added to the secret, take a new chip with 809 can be written, but to source. Induction cooker cpu program has not yet said that they can "write code" internal errors are useless. Blank film doesn't help. JustIt is only useful if provided by the manufacturer.