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In the PWM converter the output transformer bias suppresses - en.51rd.net
Friday, November 21st, 2008 at 22:12 | No commentsCategories: Power SupplyTags: PWMShort Content: Abstract: Has analyzed in the PWM switch converter, the transformer d c magnetic biasing question produces reason. Has given one kind of solution d c magnetic biasing more practical analysis situs electric circuit, and has analyzed its principle of work. This electric circuit's validity obtained the confirmation in the 20kHz/2kW entire bridge inversion power source. Key word: Converter; Bias; Pulse-duration modulation Introduction In the PWM switch converter, has the transformer d c magnetic biasing problem more or less, ... -
3500W and 6000W upscale switching power supply’s analysis (1) - 51RD Chinese electronic net
Friday, November 21st, 2008 at 17:12 | No commentsCategories: Power SupplyTags: Switching power supplyShort Content: Abstract: Analyzed direct-current output 48V/70A and 350V/10A two kind of 3500W and 48V/112A and 350V/17A two kind of 6000W upscale switching power supply's circuit design and the primary device application characteristic, and proposed waits for question which continues to analyze. Key word: Power factor adjustment; Buck 睟 oost converter; Sectional control Introduction In July, 2001, had the Chinese Journal of Power Sources amateur to send two kinds it is said that were "the military certainly level of secrecy" ... -
LinkSwitch-TN series energy conservation monolithic switching power supply’s circuit design
Friday, November 21st, 2008 at 12:12 | No commentsCategories: Power SupplyTags: Switching power supplyShort Content: Abstract: In certain domestic electric appliances' control supply as well as in the intellectualized electrical energy table, the residential heating controller, the permission use must isolates the power source. Introduced one kind of LinkSwitch-TN series monolithic switching power supply, may substitute for the tradition anti- to accommodate the voltage dropping type linear power source, to realize the highly effective energy conservation low power switching power supply's optimization design to create the advantage. Key word: Energy conservation; Monolithic switching ... -
Based on half bridge driver IR2153 fluorescent lamp electron ballast
Friday, November 21st, 2008 at 07:12 | No commentsCategories: Power SupplyTags: IRShort Content: Abstract: Introduced based on the autoexcitation type half bridge driver IR2135 fluorescent lamp electron ballast electric circuit, introduced emphatically filament preheating and unit electric circuit's and so on start protection constitutions and the characteristic, and has given the detailed electricity schematic diagram. Key word: Electronic ballast; Power factor adjustment; Filament preheating; Restarts moves Introduction Fluorescent lamp's luminous efficiency surpasses the incandescent lamp already the fact which becomes does not struggle, for this reason, in the recent 20 years, ... -
The switching power supply directs current the EMI filter’s design and realizes - en.51rd.net
Friday, November 21st, 2008 at 02:12 | No commentsCategories: Power SupplyTags: EMIShort Content: Abstract: Introduced directs current the EMI filter design general principle based on two port circuit analysis's switching power supply and the method. This principle suits in any filter's design, has made the good filter progress in the practical application. Key word: EMI filter; Input admittance; Output impedance Introduction Electronic technology's rapidly expand, set a higher request to the electronic instrumentation and the equipment: In performance, safer reliable; In the function, increases unceasingly; Uses, the automaticity is getting higher ... -
The -5V transformation is the 5V electric charge pump
Thursday, November 20th, 2008 at 21:12 | No commentsCategories: Power SupplyTags: Electric charge pumpShort Content: The general switch electric capacity electric charge pump type voltage switch can transform a positive voltage source voltage into the negative voltage, or causes it to double. But, certain (emitter-coupled logic) the electric circuit is composed completely by ECL equipment. Can only provide a negative voltage, like - 5.2V. Figure 1 explained how uses a switch electric capacity switch to obtain a being suitable is the ECL-TTL level switch and other electric circuit power supply positive electricity source voltage. Although receives ... -
Produces precise PWM profile DDS the electric circuit
Thursday, November 20th, 2008 at 16:12 | No commentsCategories: Power SupplyTags: PWMShort Content: The pulse-duration modulation is one kind of modulation or changes some square-wave the straightforward procedure. The square-wave dutyfactor fundamental mode is along with the input signal change. The dutyfactor is of refers to the square-wave ratio of the high level time and the low level time. A 50% dutyfactor's profile will have 50% high level time and 50% low level time, but a 10% dutyfactor's profile will have 10% high level time and 90% low level time. PWM has many ... -
Does not need to direct current returns the way the touching switch
Thursday, November 20th, 2008 at 11:12 | No commentsCategories: Power SupplyTags: SwitchShort Content: When the user finger bumps into connects the electric circuit public earth an electronic contact, or, because the finger enters time the 60Hz alternating voltage which the neighbor power line radiation in the electrostatic field produces, the ordinary touching switch design can examine the resistance value to drop. But, if the nearby does not have the power line, the equipment from the battery power supply (for example in auto plant), or has not connected the electric circuit public earth time ... -
Produces precise PWM profile DDS the electric circuit
Thursday, November 20th, 2008 at 06:12 | No commentsCategories: Power SupplyTags: PWMShort Content: The pulse-duration modulation is one kind of modulation or changes some square-wave the straightforward procedure. The square-wave dutyfactor fundamental mode is along with the input signal change. The dutyfactor is refers to of the square-wave ratio of the high level time and the low level time. A 50% dutyfactor's profile will have 50% high level time and 50% low level time, but a 10% dutyfactor's profile will have 10% high level time and 90% low level time. PWM has many ... -
The heat inserts pulls out the controller to realize the bipolarity processing
Thursday, November 20th, 2008 at 01:12 | No commentsCategories: Power SupplyShort Content: Some application situation needs to use a heat to insert pulls out the controller, a circuit breaker or both must use, adapts the bipolarity cocurrent input power source skeleton line. In certain uses inserts hotly pulls out in controller's situation, this kind of request stems from merely to the initial firing current consideration. Must eliminate coupling's stress and the power source skeleton line disturbance, must control the initial firing current. Moreover when some application situation in some power source some ...
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