The characteristics of this structure to work in parallel as follows

Web Design And Seo For www.china-webdesign.com

concrete nails - China Manufacturer

Thank you for inquiry my concrete nails, Tel:0086-574-6356 1872, Email:aviva@bebon-fastener.com

http://www.bebon-fastener.com/key-concrete-nails-90/

The characteristics of this structure to work in parallel as follows: power supply load sharing

1) Joint sampling commonly used at home and abroad, compared to the pulse width modulation DC / DC module load cross regulation performance has been greatly improved;
2) two sets of converters with the same circuit structure, the same components used to simplify the design, production and maintenance work.
As a result identical to the two circuits of the converter, the control circuit and the protection circuit, so the circuit selection is simple, control is simple, and low cost.
For low-voltage input, the secondary is less than 50W output power, choose single-ended flyback converter circuit has the following characteristics:
1) single FET and single output rectifier diode, eliminating the need for bulky output filter inductor;
2) only need to configure the a simple clamp network elements;
3) you can use two small MMP toroid transformer to meet the miniaturization requirements.
Control circuit design, including the choice of PWM co ntroller sync pulse generator design and isolated feedback circuit design.
Based on a simplified circuit to simplify the design of the guiding ideology, select the third generation BICMOS current-mode control chip. Because of the characteristics of this chip quiescent operating current is small, and state-of-the-art leading edge blanking, making the start-up circuit of the DC / DC converter is greatly simplified. As a result of the leading edge blanking technology so that the current signal sampling circuit also be simplified.
The sync pulse generator with a relatively high transmission of the self-excited oscillator, generate about 200kHz, rectangular pulses of 50% duty cycle. Synchronization of synchronization rectangular pulse respectively supplied to two groups of the current control type converter chip synchronous terminals, in order to achieve the PWM output pulse forefront. A lot of the rectangular pulse self-excited oscillator, this article will not go in to, should be noted that in the design of the circuit, the impedance matching is needed, you can achieve synchronization purpose of the frontier. ring shank nails