Toy police car circuit
Source: InternetPublisher:ohahaha Keywords: diode transistor Updated: 2021/12/07
Circuit working principle: VT1 is an integrated infrared receiver, which emits infrared rays from a diode and receives it through a triode . IC1 (NE556) is a dual time base integrated block. It
consists of R5, R6 and C5 to form an oscillation circuit . The oscillation frequency is about 1200 Hz. It drives the infrared
emitting diode to emit modulated infrared light through pin 5. The infrared receiving diode and R1, C1, R2,
VT2 form an infrared receiving, photoelectric conversion and pulse trigger circuit .
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