Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-noise self-excitation push-pull converter

A self-excited push-pull converter technology, which is applied in the direction of converting DC power input to DC power output, instruments, and adjusting electrical variables, etc., can solve the problems of reducing the efficiency of self-excited push-pull converters and the difficulty of choosing a reasonable magnetic bead. , achieve the effects of reduced switching noise, low implementation difficulty, and improved transmission efficiency

Pending Publication Date: 2020-03-27
广州邦讯信息系统有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the disadvantage of this method is that it is difficult to choose a reasonable magnetic bead, and it will reduce the efficiency of the self-excited push-pull converter to a certain extent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-noise self-excitation push-pull converter
  • Low-noise self-excitation push-pull converter
  • Low-noise self-excitation push-pull converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0069] A low-noise self-excited push-pull converter, such as Figure 9 As shown, it includes a power supply module 1, an input terminal 2, an output terminal 3 and a transformer T1, the input terminal 2 is connected to the primary coil 4 of the transformer T1, the output terminal 3 is connected to the secondary coil 5 of the transformer T1, and the power supply Module 1 is connected to input terminal 2 and output terminal 3 respectively,

[0070] The power module 1 includes an input positive terminal, an input ground GND, a first output terminal V01 and a second output terminal V02,

[0071] The input terminal 2 includes a capacitor C1, a capacitor C2, a resistor R1, an auxiliary coil 6, a triode TR1, a triode TR2, a bidirectional transient suppression diode D3, a bidirectional transient suppression diode D4,

[0072] The auxiliary coil 6 includes a feedback winding Nb1 and a feedback winding Nb2,

[0073] The primary coil 4 includes the primary winding Np1 and the primary w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a low-noise self-excitation push-pull converter. The converter comprises a power supply module, an input end, an output end and a transformer T1, the input end is connected with a primary side coil of the transformer T1; the output end of the power supply module is connected with a secondary side coil of the transformer T1, the power supply module is connected with the input end and the output end to supply power, and the input end comprises a capacitor C1, a capacitor C2, a resistor R1, an auxiliary coil, a triode TR1, a triode TR2 and one to two bidirectional transient suppression diodes D3; the switching noise of the output voltage is obviously reduced; only slight modification is carried out on an original Royer circuit; the self-excitation push-pull converteris simple in structure and low in implementation difficulty, increases the number of the bidirectional transient suppression diodes, improves the reliability of the circuit, feeds back part of energyto the input filter capacitor while the bidirectional transient suppression diodes are broken down, is safer, increases the number of the bidirectional transient suppression diodes, and improves the transmission efficiency of the self-excitation push-pull converter to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of push-pull converters, in particular to a low-noise self-excited push-pull converter. Background technique [0002] As disclosed in CN203522544U, a "low-noise self-excited push-pull converter" has a magnetic bead FB1 and FB2 connected in series respectively at the emitter of the push-pull triode, such as Figure 5 As shown, in the low frequency band, the impedance is composed of the inductance of the inductance. At low frequencies, the resistance R is small, the magnetic bead has a high permeability, and the inductance is large. The inductance L plays a major role, and the electromagnetic interference is reflected and suppressed. And at this time, the loss of the magnetic beads is small, and the whole device is an inductor with low loss and high power factor characteristics; in the high frequency band, the impedance of the magnetic beads is composed of resistive components. As the frequency increases, the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02M3/338H02M1/44
CPCH02M1/44H02M3/3382H02M1/0038
Inventor 白壮杜广湘杜玉甫江泽鑫钟柯佳
Owner 广州邦讯信息系统有限公司