Double tube emergency fluorescent light circuit 2

It is a Nissan Panasonic rechargeable emergency fluorescent lamp circuit. Built-in 6V, 4A. h high energy storage battery, can be
charged directly. It can be used for 2 6W fluorescent lamps.
    SAi and SAz are function switching switches. When SAi is turned to the charging position, the diode VDi is cut off, the inverter circuit does not
work, and the external power supply charges the battery; when SAi is turned to the single-tube or double-tube lighting position, VTi is cut off, the inverter circuit is working, and
the fluorescent lamp island or Gi and G2 light up. When the switch is just closed, the battery drives the 6.3V bulb EL of the flashlight to emit light.