Q:What is the difference between DC regulated switching power supply and linear power supply?

Switching power supply: high efficiency, small size, inertial components (inductance and smooth capacitance, etc.); Traditional power supply in turn is it, but the traditional power of the biggest advantage is the small noise, harmonic interference is small.

Q:In the design of switching power supply, the input power is smaller, switching transformer primary side of the inductance but the greater the? Transformer primary side of the greater the amount of inductance, the transformer is not the volume will increase?

DC "can have a different meaning, and if the voltage through the resistor does not produce a voltage drop through the resistor voltage drop is called" DC "voltage, then the DC refers to a constant voltage that does not change with time, or from the Fourier decomposition Is the DC component of the periodic signal (the DC component is equal to the mean in one cycle when the input is a periodic signal and the circuit has a periodic steady state). High frequency "DC voltage" is clearly not a constant voltage, it is estimated that the PWM thing, if it is a cycle input, then it will not only contain the DC component, but also contains the various sinusoidal AC component. Among them, the DC component in the inductor there is no pressure drop, and its components in the inductor voltage drop, so the coil inductance is certainly not short circuit. Of course, if the input signal DC component is too large, sinusoidal AC component is too small, then it may be too small inductance voltage, the entire coil current is too large. The above is the meaning of DC from the perspective of frequency domain analysis. Of course, if you avoid the concept of DC directly to the time domain analysis, that is, on the first floor zchy4610 analysis, high level charge, the current index rises, low level discharge, current index decreased, in any case, the peak current and average current are not The voltage is only added to the resistor so much.

Q:What is the difference between a switching power supply and a switching regulator?

1, in general, switching power supply is a large price concept, it can contain inverter (low pressure high pressure, UPS's predecessor), low pressure high pressure (daily use of small chargers, etc.).

Q:What brand of switching power supply cost-effective?

See what kind of switching power supply, LED, or industrial use, or communication.

Q:I do 12V2A switching power supply when the 2A load, under normal circumstances work is normal. But is the beginning of the load that moment, when adding more than 1.3A, the output voltage dropped first low and then quickly returned to normal, what reason? This is of course not normal, the same load, for someone else's power but not the problem. How should we solve this problem? Just test a phenomenon is that when the sudden removal of the load when the voltage is also the first drop and then return to normal state. How to solve it?

To increase the dynamic dynamic response speed of the power supply, it is necessary to increase the power supply bandwidth. With external feedback can adjust the feedback power supply bandwidth (bandwidth is easy to instability, to ensure stable power), or increase the output capacitor can also increase the power supply bandwidth.

Q:Switching power supply CE certification is probably how much money

Switching power supply CE certification is not expensive, do a CE certification can be sent to the RoHS certification, the specific cost can provide product information to assess, package rectification, retest not charge, welcome to consult us CNAS laboratory, ID number is the phone, thank you!

Q:Car cd with the battery all right, with a switching power supply speaker has a buzzing sound

Recommended frequency transformer. Switching power supply is prone to interference, not easy to handle

Q:Two-wire NPN near switch, switching power supply, and how to connect with Mitsubishi PLC?

Two-wire NPN proximity switch, two lines, generally brown, blue. 24V switching power supply. Switching power supply 0V and PLC COM terminal short to form a total OV Then PLC (COM) connected to the sensor blue line, the sensor brown line connected PLC X side Another point I would like to point out. Two-wire proximity switch, regardless of the difference between NPN and PNP, NPN blue OV brown x end PNP brown 24V blue X end

Q:What is the basic principle of switching power supply?

The exchange through the diode rectifier. Capacitor filter into DC, and then through the 1620KHz high frequency oscillation generator. Switch and high frequency switching transformer role, the DC into the required amplitude of the high frequency pulse voltage. And finally through the high frequency of the two poles to the high frequency pulse voltage rectification. Capacitance filter output required DC voltage. The output regulator is to rely on the output to remove the sampling voltage to adjust the oscillator frequency and pulse duty cycle.

Q:Working principle of small switching power supply

Small switching power supply works is to control the switching transistor through and turn off the time ratio, to maintain a stable output voltage of a power supply, switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. Switching power and linear power compared to the cost of both the output power increases with the growth, but the growth rate of the two different. Linear power costs at an output power point, but higher than the switching power supply, which is called the cost of reversal point.