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Taizhou Rishun Electric Appliance Development Co.,Ltd

Shanghai Rishun Electronic Equipments Co.,Ltd

Straight line: 86-523-82096702
Switchboard: 86-021-58667709

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News

Rishun Company participated in the opening ceremony of Shanghai Jiaotong University “High-growth enterprise high-quality development excellence leader class”
On July 26, 2019, the opening ceremony and the first course of the first "High-growth Enterprise Excellence Development Leadership Class" was held in Shanghai Jiaotong University. 
2019-07-26
Congratulations on the successful revision of the website of Taizhou Rishun Electric Development Co., Ltd.!
Congratulations on the successful revision of the website of Taizhou Rishun Electric Development Co., Ltd.!
2019-07-29
Dongguan has become a national advanced wire and cable manufacturing base
Dongguan wire and cable industry has experienced more than 30 years of reform and opening up, and has become an advanced wire and cable manufacturing base in Guangdong and even the whole country.
2019-07-29
China's wire and cable enterprises actively take e-commerce marketing
In recent years, China's Internet technology has developed rapidly, and e-commerce has also flourished, which has created new opportunities for the development of traditional Chinese enterprises.
2019-07-29
2013 Top Ten Wire and Cable Industry News Announced
On January 8, 2014, the results of the “2013 Top Ten Wire and Cable Industry News” produced by a number of media companies were officially released.
2019-07-29
Analysis: DC low voltage regulated power supply electronic circuit design schematic
DClow-voltageregulatedpowersupplyelectroniccircuitdesigniswidelyusedinpowermanagement,sotodayasimpleanalysisofthecircuitdiagramofthistypeofdesign,Ihopetohelpreadersinthedesignofsuchapplications.TheVD1-VD4,R1,C1,andC2oftheswitchingpowersupplypartconstitutearectifyingandfilteringcircuit.NE555andR2,R3,C4,VD6andothercomponentsformamulti-resonantcircuitwithafrequencyofabout20KHz.R4,C3,andVD5formastep-downregulatorcircuit,whichprovides12VworkingpowerforNE555.ThehighpowertubeVT1andthetransformerTconstituteaswitchingcircuit.TheworkingstateofVT1iscontrolledbythe3pinofNE555.Theon-timeisdeterminedbythepulsewidth.AdjustingR3canchangethepulsewidth.Thepulsewidthiswidened,theoutputvoltageisincreased,thepulsewidthisnarrowed,andtheoutputvoltageislowered.VT2andR8,R9,andC6formanovercurrentprotectioncircuit.Whentheloadistooheavyorashort-circuitfaultoccurs,VT2turnson,forcingtheNE555toresetandstopthevibration,thusprotectingVT1fromdamage.C7andR10areprotectionnetworkstopreventthec-ejunctionofVT1frombeingpulse-punched.Thetwosecondarywindingsarerectifiedandfilteredtooutput20Vand12Vrespectively.Inordertomaketheproductionsimple,theswitchingpowersupplyisdesignednottobeautomaticallyregulated.Itsfunctionissimilartothetransformer,butitrealizesthelight-weightisolationandbuckingeffect.Thevoltage-regulatingfunctionisrealizedbythefollowingvoltage-stabilizingcircuit.12VDCvoltageisregulatedby7805andoutput+5Vvoltage;20VDCvoltageissenttotheadjustablevoltageregulatorcircuit.
2019-07-29
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Taizhou Rishun Electric Development Co., Ltd.

Address: No. 400, Jiangsi Road, Economic Development Zone, Taizhou City, Jiangsu Province, China
Straight line: 86-523-82096702
Fax: 0523-82096200

 

Shanghai Rishun Electronic Equipment Co., Ltd.
Address: Room 1218, Kaixing Building, 35 Rijing Road, China (Shanghai) Free Trade Zone / 200131
Switchboard: 021-58667709
Fax: 021-58665779
Email: 
rs2@shrishun.com