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Working principle of emergency lamp

Update:14-06-2017
Summary:

An electronic control board, the electronic control boa […]

An electronic control board, the electronic control board comprises a power supply circuit, charging circuit, power detection circuit and power switching circuit, AC power input to the power supply circuit, power supply circuit and the alternating current into direct current supplied to the charging circuit, power switching circuit and power detection circuit, AC power is another input power the detection circuit, to detect whether the AC power to achieve the real power, a charging circuit for charging the battery, the battery provides power for a power switching circuit, a power supply circuit for power switching power supply circuit, when the power detection circuit does not output signal to the power switch circuit, a power switching circuit will provide direct the power supply circuit of DC power output to the light source.
When the power detection circuit output signal to the power switch circuit, a power switching circuit by charging the battery output DC power to the light source; lamp head connected with the shell through the lampshade consisting of accommodation space, which contains the electronic control panel, battery and light source, and to each other via the wire connection.
Emergency light bulb, when the power or power failure, the bulb can still be normal lighting in more than three hours, full play to the power outage emergency lighting function!http://www.linsheng.com/