The switching power supply transformer is a power transformer with a switching tube. In addition to the voltage conversion function of the ordinary transformer, the circuit also has the functions of insulation isolation and power transmission, which are generally used in switching power supplies and the like involving high frequency circuits.
The main heating components in the switching power supply are semiconductor switching tubes, power diodes, high frequency transformers, filter inductors, and the like. Different devices have different methods of controlling the amount of heat generated. The power tube is one of the devices with high heat generation in the high-frequency switching power supply. Reducing its heat generation can not only improve the reliability of the power tube, but also improve the reliability of the switching power supply and improve the average time between failures.
The heat generated by the switch tube is caused by the loss. The loss of the switch tube is composed of two parts: the switch process loss and the on-state loss. The on-state loss can be reduced by using a switch with a low on-state resistance. The process loss is caused by the gate charge size and switching time. The reduction of the switching process loss can be reduced by selecting a device with a faster switching speed and a shorter recovery time. But more importantly, the losses are reduced by designing better control methods and buffering techniques. This can be greatly reduced by using soft switching techniques. Reducing the heat generated by the power diode, for AC rectification and snubber diodes, there is generally no better control technique to reduce the loss, and the loss can be reduced by selecting a high quality diode. For the rectification of the secondary side of the transformer, a more efficient synchronous rectification technique can be selected to reduce the loss. For the loss caused by high-frequency magnetic materials, the skin effect should be avoided as much as possible. For the effect of the skin effect, multiple thin enameled wires can be used to solve the problem.
100% authentic best 18650 cells, below is our regular inventory list:
authentic sony li ion battery cells
US18650VTC6 3000mAh 15A/20AdischargeUS18650VTC5A 2500mAh 30Adischarge
US18650VTC5 2500mAh 20Adischarge
US18650VTC4 2100mAh 30Adischarge
US18650V3 2200mAh 10Adischarge E bike cells
US18650VC7 3400mAh 5A/8Adischarge
US18650NC1 2900mAh 10Adischarge E bike cells
US454261A8T 1590mAhlipo cells
Original Sanyo cells:
NCR18650BF 3400mAh
NCR18650GA 3450mAh 10AdischargeE bike cells
UR16650ZTA 2500mAh
UR18650ZTA 4.35V 3000mAh
UR18650FJ 2100/2200mAh red top
UR18650FM 2500/2600mAh blue head
UR18650FK 2300/2400mAh green top
UR18650ZY 2450/2550mAh Made In Japan
UR18650ZY 2450/2550mAh
UR18650AY 2150/2250mAh white head
UR14500P 830mah
UR18500F(K) 1620/1700mAh
UR18650NSX 2600mAh 20Adischarge
UF103450PN 1880/2000mAh with fuse
UF103450PN 1880/2000mAh no fuse
UF463450F
UF703450 1430/1480mAh
UF653450 1250/1300mAh
UF624447F 1530mAh
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UF463048F
UF553436G
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NCR18650B3 3400mAh
NCR18650A 3100mAh
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NCA103450 2350mAh no breaker
NCA903864 3120mAh
NC-1900SCR
NCR18500A 1940/2040mAh
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Original Samsung li ion cells:
INR18650-25RM 2500mAh 20Adischarge
INR18650-25RM 2500mAh 20Adischarge
INR18650-25R 2500mAh 20Adischarge,
INR18650-20RM 2000mAh 22Adischarge
INR18650-30Q 3000mAh 15Adischarge
ICR18650-30B 4.35V 3000mAh
INR18650-35E 3500mAh 10Adischarge
INR18650-29E 2900mAh 8.25Adischarge
INR18650-32E 3200mAh 10Adischarge
ICR18650-22P 2150mAh 10Adischarge
ICR18650-22PM 2150mAh 10Adischarge,
ICR18650-22F 2200mAh
ICR18650-22FM 2200mAh
ICR18650-26JM 2600mAh
ICR18650-26FM 2600mAh
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Original LG cells:
INR18650HE4, 2500mAh 20Adischarge
INR18650F1L, 3400mAh
ICR18650S3, 2200mAh,
ICR18650B4/B4L, 2600mAh
ICR18650MF1/MF2,2200mAh,10Adischarge
ICR18650M26,2600mAh, 10Adischarge
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INR18650MH1 3200mAh 10Adischarge
INR18650MJ1 3500mAh 10Adischarger
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