Toy car motor drive circuit
Source: InternetPublisher:zht24 Keywords: Motor drive circuit phototransistor Updated: 2021/06/09
Toy car motor drive circuit
Shown is a circuit diagram of a toy car motor drive circuit. This motor drive circuit is a light-controlled bidirectional rotation drive
motor circuit. The photosensitive transistor is connected to the base circuit of VT1. When there is current in the photosensitive transistor , VT1 is turned on; when there is no light,
it is turned off. When there is light, rri is on, VI2 is off, VT3 is off, VT4 is on, and VT5 is on, then a current Il appears, so
the motor rotates forward; when there is no light, VT1 is off, VT6 is on, and VT7 is on, When VT8 is turned on, a current mound appears and the motor reverses.
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