一种充电电路、闪光灯及爆闪系统
By introducing a voltage detector and control module into the charging circuit, the switching module is controlled based on the voltage signal, which solves the problem of frequent triggering of the AC power overcurrent protection circuit and extends its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DAHUA TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-17
AI Technical Summary
The overcurrent protection circuit of AC power supply is frequently triggered due to the periodic signal of AC voltage, which reduces its service life.
By introducing a voltage detector and control module into the charging circuit, the switching module is controlled to turn on and off based on the voltage signal at the power connector, reducing the number of times the overcurrent protection circuit is triggered.
This effectively reduces the number of times the overcurrent protection circuit at the AC power supply is triggered, extending its service life.
Smart Images
Figure CN224520678U_ABST
Abstract
Claims
1. A charging circuit, characterized by, It includes a power connector (1), a switching module (2), an energy storage capacitor (3), a voltage detector (4), and a control module (5); The power connector (1), the switch module (2) and the energy storage capacitor (3) are electrically connected in sequence. The voltage detector (4) is electrically connected to the power connector (1) to collect the voltage signal at the power connector (1). The control module (5) is electrically connected between the voltage detector (4) and the switch module (2) to allow the control module (5) to control the switching module (2) based on the voltage signal at the power connector (1).
2. The charging circuit of claim 1, wherein, The voltage detector (4) is an optocoupler or an analog-to-digital converter.
3. The charging circuit of claim 1, wherein, The charging circuit also includes a switching power supply (6), which is electrically connected between the power connector (1) and the switching module (2).
4. The charging circuit of claim 3, wherein, The voltage detector (4) and the switching power supply (6) are connected in parallel to the power connector (1).
5. The charging circuit of claim 3, wherein, The charging circuit also includes a boost converter (7), which is electrically connected between the switching power supply (6) and the switching module (2).
6. A flash lamp characterized by Includes the charging circuit and lamp tube (8) as described in any one of claims 1-5, wherein the energy storage capacitor (3) is electrically connected to the lamp tube (8).
7. The flashlamp of claim 6, wherein, The energy storage capacitor (3) and the control module (5) are connected in parallel to the lamp tube (8).
8. The flashlamp of claim 7, wherein, The flash lamp also includes a pulse voltage generator (9), which is electrically connected between the control module (5) and the lamp tube (8).
9. The flashlamp of claim 7, wherein, The control module (5) is equipped with a strobe signal input port (51).
10. A flash system, characterized by Includes an AC power supply (100) and a flash lamp as described in claim 6, wherein the power connector (1) is electrically connected to the AC power supply (100), and the AC power supply (100) is provided with an overcurrent protection circuit.