The main purpose of the device for use as emergency lights in the dark, for example when various construction road works or to refer to various moving objects, such as cyclists or runners. The distinctive qualities of this scheme are the simplicity of construction, efficiency and reliability and low cost of the device. If you do not want the installation in parallel several batteries can be removed from the schema elements BT2, D1, D2.
Mode you can pick up elements R1, C1. Operating voltage range 3.6-9, is determined by the type of lamp. The use of more powerful lamps is not recommended.
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