Q:What is the meaning of the magnetic ring color in the switching power supply?

And skeleton, materials are related! Give you a connection to yourself to see if you want to adopt! The The

Q:What is offline LED driver? Offline switching power supply

Off-line switching power supply, also known as isolated switching power supply, is an AC-DC converter circuit. AC and DC are isolated by transformer. In some laboratories or high demand occasions, for the safety of the experimental staff, the experimental input power is generally used 1: 1 frequency transformer and the mains to isolate, so that the laboratory laboratory personnel regardless of which line encountered The root line will not have the risk of electric shock, because the isolated power and the earth is not connected. In industrial control equipment, it is sometimes necessary to isolate the power supply lines between the two systems, such as isolating ground noise, isolating high common mode voltages, etc., using a DC converter with a transformer to separate the two power supplies They are independent of each other, in order to achieve the above purpose. Each module is powered separately to prevent a module from damaging other modules due to high voltage discharge or other causes. The purpose of this can be to ensure that each module is working independently and undisturbed.

Q:Led lights switching power supply controller how to repair

Common faults and maintenance techniques for switching power supplies 1. Fuse blown: In general, the fuse blown on the power of the internal line is a problem. Because the power supply in the high voltage, high current state, it will cause the power supply current instantaneous increase and let the fuse blow. Maintenance Tips: Check the power input of the rectifier diodes, high voltage filter electrolytic capacitors, inverter power switches and other components are not breakdown, open circuit and damage. But also to see the various components on the circuit board to see whether the appearance of these components without burning paste, with or without electrolyte overflow and so on. 2. No DC voltage output or voltage output instability: the main power of a short circuit, open circuit phenomenon, then the power load is too heavy, high-frequency rectifier filter circuit rectifier diode breakdown, filter capacitor leakage and so may cause this Happening. Maintenance techniques: first with a multimeter to measure the secondary original, excluding high-frequency rectifier diode breakdown, load short-circuit situation, if this time the output is zero, then you can certainly be the power of the control circuit is a problem. Then you can use the static measurement of the corresponding components to check out the damaged components.

Q:Why the use of high-frequency switching power supply

Because the high-frequency operation of the state, the transformer electromagnetic conversion speed, so the same energy conversion, the unit time within the transformer stored in the energy can be greatly reduced, thereby greatly reducing the size of the transformer and the loss in the transformer, thus Play to reduce weight, improve efficiency.

Q:Give you a switch on how to look at it is isolated and non-isolated?

With a multimeter input and output side of the resistance, if very small or direct conduction is non-isolated, if the resistance is large, is isolated

Q:Wireless communication room in the combination of switching power supply and integrated switching power supply and the difference between the respective functions?

The central room of the DC power supply system is composed of AC power distribution screen, DC power distribution screen, switching power supply rack (including a control module and multiple rectifier module), two large-capacity battery and connect them between the power cable The The battery is a group of 24 components, each 2V. The total voltage is 48V. ? Wireless communication room in the general use of wall-mounted AC distribution box instead of AC power distribution screen, the use of combined switching power supply to replace the DC distribution panel and switching power supply (including control module and rectifier module), so called the combination of switching power supply, DC power distribution panel and switching power supply rack together. Plus two sets of batteries. The battery is a group of 24 components, each 2V. The total voltage is 48V. ? Integrated switching power supply is the AC power distribution and battery pack is also integrated into the rack, the equivalent of a rack to complete the central room of the DC power system all the features, but the capacity to be much smaller. Its battery pack is generally used 4, each 12V, the total voltage of 48V. I found on the Internet under the MCS3000D-3 * 50A power supply, should be a combination of switching power supply.

Q:The voltage is too low to refer to the INPUT voltage range below the switching power supply

The input voltage below the allowable range will reduce the output power of the switching power supply, the stability of the output voltage will be poor, adjust the stability of the tube will rise, if the input voltage is below the allowable range of switching power supply is not working or stop jobs.

Q:Switch power jumper do not know which one which then do?

You say the switching power supply is the type of switching power supply,

Q:A DC / DC switching power supply input with UC3843 is a 24V power supply between two power supplies is up to 200M line now the situation is DC / DC power supply at no time when the load is measured at this time DC / DC power input It is actually less than 15V if the DC / DC power supply is loaded with about 10W and the 24V power supply output is adjusted to 27V or more when the DC / DC power supply is working In front of the wrong In the load when the 10W when the front power output is adjusted to 27V measured when the power input voltage is 14.5V or so when the no-load time is normal add another point With 10W when the front of the power output is adjusted to 27V below the two power between the current is significantly increased at this time into the DC / DC power supply voltage from 15V down to 6,7V looks more like the back of the power from Excited and DC / DC of this power supply in the 9V or so input conditions can work properly

DC power supply inside the capacitor caused by leakage can not bring the load, I have previously repair, replace the filter capacitor to solve the problem. Leakage, can only replace, you add more capacitors is useless.

Q:Shell on the upper left corner and the lower right corner of the two screw holes. Why is the upper left corner screw hole designed to have only half a circular arc? Installed up the screw can only pressure a little bit edge. Fixed unreliable

Xiongtai switch power on the bottom of the reverse look up, so that those wiring lines up, the line also pick up, then you say the upper left corner of the screw hole (note that it is not a screw hole hole), do not change Into the lower right corner of the screw through the hole, you screw the first screw on the floor, the switching power supply is not a long hanging firmly firmly fixed on the top and then simply fix it, it is very reliable. That half of the hole is actually easy for users to disassemble the design, half of the hole facing down, both good and easy to unload, Oh!