A control device for a buzzer and a buzzer
By using an autotransformer boost circuit and a drive circuit, the problem of the buzzer not working properly under low voltage is solved, realizing high-decibel sound generation under low voltage. The circuit is simple and low-cost, and suitable for low-power devices.
CN224457642UActive Publication Date: 2026-07-03天津新智感知科技有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 天津新智感知科技有限公司
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-03
Smart Images
Figure CN224457642U_ABST
Abstract
This utility model discloses a buzzer control device and a buzzer. The control device includes a boost circuit with an autotransformer and a drive circuit. The drive circuit is electrically connected to the common terminal of the autotransformer. The secondary winding of the autotransformer is connected in parallel with the buzzer to be controlled. The turns ratio between the primary and secondary windings of the autotransformer is the same as the voltage ratio between the power supply connected to the boost circuit and the drive voltage of the buzzer to be controlled, and the voltage value of the power supply is less than a set voltage threshold. The drive circuit is used to control the power supply to supply power to the autotransformer. The autotransformer is used to boost the power supply voltage to determine the buzzer to be controlled to sound. This utility model solves the technical problems of non-normal operation or insufficient decibels in the prior art when using low voltage to control the buzzer to sound. It achieves the technical effect of enabling the buzzer to produce high decibels with low voltage power supply, and has a simple circuit structure and low cost.
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