Inv.input (Pin 1) : Error amplifier reverse input. In a closed-loop system, the pin is connected to a feedback signal. In an open-loop system, this end is connected to the compensation signal input end (pin 9) to form a follower. Noninv.input (pin 2) : The error amplifier inputs in the same direction.
DC/DC power supply refers to DC converted to DC power supply, from this definition, LDO (low voltage difference linear regulator) chip should also belong to DC/DC power supply, but generally only DC210 Power chip parameters '>LC1210 Power chip parameters
1, according to the query of relevant information, OB2263 management chip pins less, complete functions, low price. LC1210 is a 200mA, static power consumption of only 5uA, voltage up to 12V, noise less than 50uVRMS low-voltage differential linear regulator. The output voltage of the LC1210 can be customized at 0.1V intervals in the range of 1V to 5V.
2, this power chip is best to use the original chip, other things are difficult to stick.
3, mip532 Belongs to the power management chip, and its parameters are set as working voltage 24 volts, working current 10 amps, and output power 12 watts.
4, the power chip test socket has the characteristics of high precision and high stability. It adopts advanced measurement technology and precise circuit design, which can accurately measure various parameters of the power supply chip, such as voltage, current, power, etc., to ensure the accuracy and reliability of the test results.
This is an integrated block called a "three-terminal regulator". The AC voltage is reduced by the transformer, and then rectified by the rectifier bridge, and the DC voltage after the large capacitor filter is input to the input end of the integrated block, and the stable DC voltage can be obtained at the output end to supply other circuits.
The following are the roles of the five pins: Pin 85: Ground (GND) Pin 85 is the ground (ground) pin of the relay, which is connected to the ground of the vehicle or electrical system. Pin 86: Control signal Input Pin 86 is used to receive a control signal, usually connected to a switch, control unit, or otherwiseHe controls the output of the device.
Hall elements are generally four-legged, two of which supply power and two of which output voltage signals proportional to the strength of the magnetic field. Hall IC has three and four legs, respectively, power supply, ground, signal Vout, more fourth foot may be Vout control signal, speed signal and so on.
This component is a chip, the number above is his code name, only five pins integrated chip.
There is a small dot on the chip, and next to it is a foot. The small circle on the chip is the first pin, sorted counterclockwise; If there is no small circle, there is a semi-circlePort, then the left pin is the first pin, sorted counterclockwise.
1. The SOT23-6 with integrated ae935 and silk screen for AE is packaged with low-voltage differential linear voltage regulator LDO chip, the specific model is: RT9011, and its typical application circuit is shown in the following figure.
2, me9435 is a MOS field effect tube integrated block, that is, the current 5A, voltage 30V, P channel MOS tube, can be used to do electricityThe sub switch function, 1, 2, 3 pin is the input voltage, 5, 6, 7, 8 is the output, 4 pin level output. Patch sop-8 pin package.
3, this is a temperature sensor integrated block, basically control temperature induction temperature.
The input voltage is too high, the regulator generally requires the difference between the input voltage and the output voltage to be about 2-3V, too high the chip is overheating, too low to reach the voltage regulatorEffect.
To solve this problem can be considered from two perspectives: strengthen the heat dissipation, such as installing the heat sink, increasing the heat sink area, using the fan for forced air cooling and so on. Reduce heat, for example by lowering the supply voltage to reduce the pressure difference, or using Buck chopper circuits instead of linear voltage regulator circuits.
Voltage regulator chip, it is estimated that the load has a short circuit, or it has a problem.
1, inappropriate one is that the voltage on the car is sometimes not stable enough; Second, the 7809 regulator block has no overcharge protection, which is easy to damage the equipment; Third, the 7809 is a voltage chip, which provides little current.
2, if the current is not much with a 7812 power chip can be, if the current is large, you need to expand the current circuit can be solved. < / p > < p > 3, C1 - input filter capacitor, C2 - output filter capacitor, 7805 - voltage regulator IC, D5 ~ D9 -Step-down diode. D5~D9 will reduce the input voltage, reduce the 7805 power consumption, can also be used, usually the minimum input voltage of the 7805 regulator IC is 3-4V higher than the output voltage.
4, how much output power, if the power is large, it is best to buy a finished DC/DC, switching power supply or linear voltage regulator. 24V to 12V. The two capacitors are connected in series at both ends of 24V to filter, and then take the center tap to obtain 12V voltage, but this method has low load capacity.
5, do not adjust what appliances can not be used, it is to charge 24V battery. Need oneThe inverter turns 24V into 220V, and then it can be used, and the 1000W inverter (not counting the battery) is 500 yuan. Choose your own battery according to your needs. There are two ways to do this.