Lithium Battery 3.7V Lithium Polymer Battery 3.2V LifePo4 Battery 1.2V Ni-MH Battery Button Coin Battery
3.7V Battery Pack 7.4V Battery Pack 11.1V Battery Pack 14.8V Battery Pack Other Battery Pack
Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-04-08 Hits: Popular:AG11 battery
Introductory circuit knowledge of power supply: primary and secondary series and parallel connection of transformer
Power transformers are the same as ordinary devices. During emergency operations, multiple transformers can be used in series and parallel under certain conditions. For example, commercially available power transformers can fully meet the requirements. When the transformer power meets the requirements but there is no suitable voltage, two or more transformers can be used in series; when the voltage meets the requirements but the transformer power is not enough, two or more transformers can be used in parallel to meet the requirements. Circuit power requirements. The power transformer is composed of an inductor coil, so it completely follows the operation rules of the inductor. You can connect the primary of the power transformer in series or the secondary of the output. The four situations are introduced below.
1. Primary series connection of power transformer
In the transformer calculation formula, there is a constant N called the turns ratio, which is the ratio of the primary turns to the secondary turns. The primary-to-secondary voltage ratio is N, and the primary-to-secondary current ratio is 1/N. For example: two A transformer with a primary of 220V and a secondary of 18V, N is 13. If the primary of the two transformers are connected in series, the output voltage on a single secondary will drop below 9V. In this case, when the secondary voltage of a single transformer is higher than the power supply of the multiple electrical appliances, two or more primary transformers can be used in series. However, if the two secondary circuits are connected in series, they will not be of much use value. In this case, as long as the power requirement of a single transformer is guaranteed, the secondary output voltage is not necessarily the same. Its output voltage is calculated as: V single = (V1 times + V2 times +...Vn times)/Vn.
2. Secondary series connection of power transformer
The secondary series connection of a power transformer is a combination of two or more transformers when a single power is sufficient but the secondary output voltage is not. For example, when the primary input of two transformers is 220V and the secondary output is 18V, if you want to supply 33V to the load, the secondary of the two transformers can be connected in series. It is also very easy to connect the secondary of the power transformer in series. Different secondary outputs can also be used in series as long as the power of a single transformer is ensured. Under ideal conditions, when the primary input voltages of multiple transformers are the same, the total output calculation formula is: V total = V primary / (V1 times + V2 times +...Vn times).
3. Primary parallel connection of transformer
This situation is a common example in our lives. The remote control transformer and the main transformer (power switching transformer) in multiple old-fashioned color TVs with different power supplies are all connected in parallel at the primary level of the transformer. 4. Secondary parallel connection of transformer
The secondary parallel connection of power transformer is used when the secondary output voltage of a single transformer is the same but the single power cannot meet the requirement. Its application is to superimpose the secondary currents of multiple transformers to meet the power needs of the load. The secondary of the power transformer is connected in parallel, so that the output power is the sum of the powers of multiple transformers.
The series-parallel application of power transformers does not distinguish between linear power supply circuits and switching power supply circuits. In the previous linear power supply circuits, there were more application examples of secondary series connection. For example, the reverse-pass transformer in the TV set used the series connection of the secondary of the transformer. In today's high-power switching power supplies, there are more applications of secondary parallel connection. For example, in switching power supplies with hundreds of watts, the secondary of the transformer is often connected in parallel to increase the power. Pay attention to the following points when applying series and parallel power transformers:
(1) When connecting power transformers in series and parallel, pay attention to the same terminals of the transformers. When used in series, they must be in series and not in reverse. When used in parallel, the same terminals must be in parallel with the same terminals, otherwise the transformer will be burned.
(2) The above calculation is only an ideal algorithm, but in fact the loss of a single transformer after they are connected in series and parallel is very large. The secondary output voltage of each power transformer will be lower than the result calculated by the above formula.
(3) If different secondary outputs are to be used in parallel, it is best to do it after voltage stabilization, and the parallel voltage is the lowest voltage value among the transformer outputs. When the secondary circuits are connected in series, they can be directly connected in series, or they can be connected in series after voltage stabilization.
(4) A common ground in the power circuit is necessary. Potential comparisons and voltage calculations are only possible with a reference point.
Read recommendations:
What are the six major advantages of ternary lithium batteries?
What is the difference between ordinary batteries and lithium batteries?
Popular recommendation
AAA Ni-MH battery wholesale
2023-03-22602248 battery manufacture
2023-03-2212v 50ah lifepo4 lithium battery pack
2023-05-09li ion 18650 battery pack wholesaler
2023-03-2218650 3.7v battery
2023-03-22L1325 4LR44
2022-10-09801520 180mAh 3.7V
2022-06-27Lithium Battery GN4825
2022-08-19Lithium Battery GN12-400
2022-08-19LR20
2022-08-19Business laptop bag
2022-09-22602030 300mAh 3.7V
2022-07-01Carpet game signs
2022-09-22Ni-MH AA600mAh 1.2V
2022-07-01Cabinet type energy storage battery 10KWH
2022-11-086F22 battery
2023-06-2518650 lithium rechargeable battery
2023-06-25801620 lipo battery
2023-06-25102450 battery
2023-06-25CR2430 battery
2023-06-25Characteristics and applications of lithium-ion batteries.18650 lithium ion battery 3.7v
2023-09-20Environmental Friendliness of Cylindrical Lithium - Ion Batteries
2025-03-15What are the characteristics of custom lithium batteries.lifepo13 battery for solar energy storage w
2023-04-10Lithium battery fast charge principle
2024-03-14Lithium battery application common sense
2024-04-10Battery fault detection.Column rechargeable battery
2023-08-12Lithium battery negative material.rechargeable solar energy storage battery Vendor
2023-05-09What is the lithium battery
2023-02-10Composition of lithium battery module
2022-12-10lithium iron phosphate battery.rechargeable solar energy storage battery manufacture
2023-05-06