Electric bicycle charger loses electric alarm

The utility model discloses an electric bicycle charger loses electric alarm, its characterized in that, it includes the bicycle charger, and the bicycle charger is connected to current -limiting resistor, and current -limiting resistor is connected to and prevents palirrhea diode, prevents that palirrhea diode is connected to a normally open contact, and first movable contact is connected to electrolytic capacitor, and the electrolytic capacitor other end is connected to the second movable contact, and a normally closed contact and the 2nd normally closed contact all are connected with the music integrated package, and the music integrated package is connected to the speaker, the utility model discloses an actively progressive effect lies in: utilize the condenser can store and release electric energy's function, for alarm power supply, safe and reliable, the storage and the release that utilize two contact relay to come automatic switch -over condenser electric energy as electronic switch, former charger it