Multipurpose dimming electronic transformer circuit

Abstract

The invention discloses a multipurpose dimming electronic transformer circuit which can drive a halogen lamp and a light-load LED lamp. The multipurpose dimming electronic transformer circuit comprises a power input end (1), a filtering and rectifying circuit (2), a dimming circuit (3), a high-frequency inverter circuit (6) and a high-frequency output load power supply circuit (7), wherein city power is input to an externally arranged dimmer (8) through the power input end (1), is converted into fluctuant direct current after passing through the filtering and rectifying circuit (2) and respectively flows into the dimming circuit (3) and the high-frequency inverter circuit (6), the fluctuant direct current is inverted into low-voltage high-frequency alternating current through the high-frequency inverter circuit (6) and is provided for an output load through the high-frequency output load power supply circuit (7) for power supply, the high-frequency inverter circuit (6) comprises a high-frequency transformer (TR1), the high-frequency transformer (TR1) enables the output load to be a light load through auto-excitation type oscillation, the dimming circuit (3) modulates the high-frequency inverter circuit (6) to adjust the output current of the high-frequency inverter circuit (6). The multipurpose dimming electronic transformer circuit can be widely applied to the field of electronic transformers.

Description

technical field [0001] The invention relates to a dimming multipurpose electronic transformer circuit. Background technique [0002] Traditional low-voltage halogen lamps use a dedicated electronic transformer. This electronic transformer will stop vibrating due to detuning when the load is small, causing it to fail to work normally at light loads, so it cannot drive LED lights normally. Moreover, this traditional electronic transformer is generally not suitable. It has a dimming function, so it has a single function and cannot adapt to the gradual development trend of LEDs. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a multi-purpose electronic transformer circuit with adjustable light. The electronic transformer circuit can not only drive halogen lamps, but also drive Lights and LED lights are dimmed. [0004] The technical solution adopted in the present inve...

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Problems solved by technology

[0002] Traditional low-voltage halogen lamps use a dedicated electronic transformer. This electronic transformer will stop vibrating due to detuning when the load is small, causing it to fail to work normally at light loads, so it cannot drive LED lights normally. Moreover, this traditional electronic transformer is generally not suitable. With dimming function, so the function is single, unable to adapt to the gradual development trend of LED

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