1, L780L781L780L7815 L7805: is a commonly used three-end regulator with an output voltage of 5V and an output current of 1A. L7812: Similar to L7805, but with an output voltage of 12V and an output current of 1A. L7808: is A three-terminal 8V regulator with an output current of 0.5A.
2, OB2223AP. According to the query on Alibaba's official website, the model of the seven-pin power chip of the United States electric pressure cooker is OB2223AP, and the seven-pin power chip provides work for the power tubeSignal, detect the power level, adjust the voltage in real time.
3 SN75176. According to the Siemens official website, the 7-pin chip on the Siemens water heater computer board is SN75176, commonly known as the communication chip, and the SOIC package is used.
4, it should be noted that in order to ensure the safe operation of FSD200, a 47 euro 5W current limiting resistor is installed between the rectifier output (305V) and the 7 pins of FSD200. Generally do not take substitutes when buying, use the original model to avoid changing the original circuit and worry.
5, the power supply tube50V, static power consumption 100mW, on-resistance Rds (on) typical value of 15Ω, output 12V/0.3A.
a chip, lm317 chip can be used instead of lm317 can be charged. 220 volts all the way to the clothes.
①, about the above PN8034 chip can not be replaced with PN6012, the reason is that the two chip models are different, and the functional pins are not available.
This kind of thing is difficult to buy, unless you find the disassembly parts, some new electronic components are not willing to sell, in similar situations, I generally use mobile phone chargers or otherThe power supply is reformed, so that it outputs the same voltage as the electrical appliance, and the whole substitute is used, as far as I know, it is very common in our circle to do so.
The pins of both are the same, but the power is not the same. The TNY176PN has low power. Therefore, if the TNY176 board is used, it can be replaced with TNY280, and vice versa. The TNY176 can be replaced with REF7276 and the TNY280 can be replaced with REF7280 so that the circuit is exactly the same and the power is also matched.
LNK364PN is a low-power high-efficiency off-line switching IC, often used as a power management chip for induction stoves, with high circuit efficiency. The chip can be directly replaced with LNK564PN, or replaced with TNY266, and the first pin is suspended with 0.1UF/63V capacitor to the ground.
The power supply of a desktop computer 14-pin interface, the power supply is easy to break, and the 7-pin power chip collapses, while the large capacitor next to it bulges. Since the filter voltage of this capacitor is claimed to be 300Volts, the actual work has 310 volts, even up to 340 volts.
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.
V switching power supply 5678 feet welded together is VIPER1VIPER22 or VIPER12A, VIPER22A chip, is the pulse width control chip of the switching power supply, in the air conditioning, induction cooker and other circuits have applications.
indicates electricitySource foot, 20v is normal. In general, directly change a 3842, to ensure that the mos does not break down, disconnect the gate, power, multimeter test 3842 pin 6 swing voltage is basically okay.
The switching power driver chip is generally not directly connected to the transformer. Generally, one of the pins outputs a PWM signal to that MOSFET. And the average engineer will not deduce what the chip is according to the pin, there is no reverse operation.
Its working principle is to convert the input current into the current and voltage suitable for LED lamp work. Specifically, the LED driver chip is usually composed of two parts: the power supply part and the control part.
Its working principle is to use the control circuit inside the circuit to control the size of the output current, so that the LED lamp produces different brightness output. The circuit design of the LED driver chip is generally composed of the following parts: Input voltage control: This part is responsible for stabilizing the input voltage and ensuring that the driver chip can work normally.
In-depth understanding of LED chipsThe magic of LED chips comes from the wonderful properties of semiconductor materials. When an electric current passes through the P-N junction between the P-type semiconductor and the N-type semiconductor, the electrons recombine with the holes, releasing energy that is converted into visible light.
led driver chip principle LED control card built-in high-performance single-chip LED driver chip, the controller through the internal control program to the LED driver chip to send control signals and data, LED driver chip according to the control signal and data requirements, produce the corresponding action, so as to achieve separate control of each red, green, blue LED.
Put the lamp shadeTake it off, replace the old lamp and plug the line into the plug, pay attention to distinguish between the neutral line and the fire line, usually the neutral line is blue, the fire line is red. Finally put the lampshade back on and the installation is complete.