REMINDER FOR BIKE LOCKING
The utility model relates to a reminder for bike locking. A complementary type audio oscillator is formed by a DC biasing resistor R, a positive feedback capacitance C, and a composite amplifier tube formed by a transistor BG-[1] and a transistor BG-[2]. A push-button switches K-[1] and a push-butto...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The utility model relates to a reminder for bike locking. A complementary type audio oscillator is formed by a DC biasing resistor R, a positive feedback capacitance C, and a composite amplifier tube formed by a transistor BG-[1] and a transistor BG-[2]. A push-button switches K-[1] and a push-button switch K-[2] which are arranged on specific position controls a circuit. The sound generated by a loud-speaker is used to remind people to lock a bicycle. The utility model is arranged on a bicycle, and can remind people to lock a bicycle in time when the bicycle is parking. The utility model has simple and safe circuit and low cost. |
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