In today's society, children's toys electric cars have become the mainstream of children's toys, and they are so popular for many reasons, such as low cost, stable operation, easy operation, high safety and so on. The following is a small series of sorting out the working principle of the electric toy car is what, to appreciate and learn it, I hope to help you.
Scientific principle of electric toy car
Ordinary electric toy cars are all one-way drive, which will not be automatically returned when they encounter obstacles in motion. At this time, the motor is doubled due to the blocked stop or slow speed. Make the motor strictly smoked and heat up. A great waste of the batteries. Jie ghost road can let the play car in the encounter'film obstruction automatically return phoenix. Therefore, the current flowing through the tractor does not become too large a-cluster. And it protects the motor.
This circuit consists of three parts: detection circuit, control circuit and drive circuit. The working principle of each partial circuit is briefly described below.
The detection circuit is composed of R1 and V3 to detect the movement state of the motor. The principle of R1 is connected in series in the motor circuit. When the rotation of the motor is blocked, the current of R1 increases. When the voltage of R1 reaches or exceeds 0.6V, the triode V3 is connected, and the collector sends a high level signal, which is sent to the control circuit through R12 as a signal to control the steering. Changing the resistance value of R1 can change the sensitivity of the current detection. The action current set according to the parameters in the figure is about 400mA, which is 3~4 times the working current of the motor. In today's society, children's toys electric cars have become the mainstream of children's toys, and they are so popular for many reasons, such as low cost, stable operation, easy operation, high safety and so on. The following is a small series of sorting out the working principle of the electric toy car is what, to appreciate and learn it, I hope to help you.
Scientific principle of electric toy car
Ordinary electric toy cars are all one-way drive, which will not be automatically returned when they encounter obstacles in motion. At this time, the motor is doubled due to the blocked stop or slow speed. Make the motor strictly smoked and heat up. A great waste of the batteries. Jie ghost road can let the play car in the encounter'film obstruction automatically return phoenix. Therefore, the current flowing through the tractor does not become too large a-cluster. And it protects the motor.
This circuit consists of three parts: detection circuit, control circuit and drive circuit. The working principle of each partial circuit is briefly described below.
The detection circuit is composed of R1 and V3 to detect the movement state of the motor. The principle of R1 is connected in series in the motor circuit. When the rotation of the motor is blocked, the current of R1 increases. When the voltage of R1 reaches or exceeds 0.6V, the triode V3 is connected, and the collector sends a high level signal, which is sent to the control circuit through R12 as a signal to control the steering. Changing the resistance value of R1 can change the sensitivity of the current detection. The action current set according to the parameters in the figure is about 400mA, which is 3~4 times the working current of the motor.
