High-frequency electronic transformer
A technology of electronic transformers and high-frequency oscillating circuits, which is applied in the field of electronic technology applications and can solve problems such as large volume, heavy weight, and high copper consumption
Inactive Publication Date: 2011-07-20
陈子杨
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Problems solved by technology
It overcomes the shortcomings of traditional silicon steel sheet manufacturing transformers, such as large volume, bulkiness, high copper consumption, and high price, so high-frequency electronic transformers can be widely used in various electrical appliances
Method used
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[0023] The present invention can be realized by implementing the circuit working principle diagram of the high-frequency electronic transformer shown in the accompanying drawings and the description of the accompanying drawings, the technical requirements of the components described below and the connection relationship between the above-mentioned components.
[0024] Selection of components and their technical parameters
[0025] 1. D1 ~ D4 use four 1N4007 silicon rectifier diodes;
[0026] 2. D5 is a bidirectional trigger diode, the model is DB3 type, or VR60 type, and the withstand voltage value is required to be 29 ~ 34V;
[0027] 3. BG1 and BG2 are silicon transistors, the model is 2CS13005, and the current amplification factor β value is required to be 15-20. 2SC3093 and other high-power high-back-voltage silicon transistors can also be used, requiring BVceo≥350V;
[0028] 4. The resistor is 1 / 4W metal film resistor, the resistance value of resistor R1 is 330KΩ, and th...
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The invention belongs to the field of electronic technology application and relates to a high-frequency electronic transformer which comprises a mains power supply, a full bridge rectifying circuit, a high-frequency oscillating circuit, a start and trigger circuit, an anti-electromagnetic interference absorption circuit and a high-frequency output circuit. The transformer is characterized in that the high-frequency oscillating circuit comprises a high-frequency oscillating transformer (T1), a silicon transistor BG1, a silicon transistor BG2 and a start and trigger circuit. The high-frequency electronic transformer has the advantages similar to a switching voltage-stabilizing power supply and can be used for manufacturing one or more groups of different output voltages; the circuits of the transformer have an overcurrent protection effect, and once the output ends overload or have short circuits, the circuits can immediately stop oscillating so as to stop voltage output; the output ends have a good safety isolation effect with the mains power supply; and the transformer is suitable for manufacturing various direct current power supplies of which the power does not exceed 50W. In addition, the high-frequency electronic transformer has the advantages of light weight and low manufacturing cost.
Description
technical field [0001] The invention belongs to the application field of electronic technology, and relates to a high-frequency electronic transformer. Background technique [0002] The working principle of the high-frequency electronic transformer is very similar to that of the switching regulated power supply, and it is actually an AC inverter. Firstly, the alternating current is converted into pulsating direct current, and then a high-frequency oscillator is composed of electronic components to convert the direct current into high-frequency alternating current, and then the required high-frequency alternating current is output through the electronic transformer, and then secondary, rectified and filtered to obtain low-voltage direct current. Its characteristic is that the electronic transformer does not use many electronic components in the circuit like the switching regulated power supply. It is a new type of electronic transformer developed on the basis of the circuit ...
Claims
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Inventor 陈子杨
Owner 陈子杨