You know, comparing with DC motor, AC motor at least has the following three merits:
1) Without comutator, AC motor is simple in structure and convenient in fabrication;
2)AC motor is relative firmly, which is easy to be made a high speed, high volt
The difference between IR sensor and ultrasonic sensor:
IR sensor, Infra-Red sensor, whose circuit is simple; However, it is heavily influenced by light and ranging unavailable;
Ultrasonic sensor: Stable, ranging available and little influenced by l
The difference between a DSP and microcontroller:
DSP is essentially designed for fast processing of digital signals, which has such charecteristics, like the separation in terms of structure of data and address bus, greater data throughput, the de
As we all know, the diode(Wikipedia) is of forward conduction. When the reverse voltage is applied at both ends of the diode, which lead to the electrons can’t pass through the diode, so that the diode is equivalent to an open circuit.
The relationship between load resistance and internal resistance of power source is in a series connection, which is applicable to Ohm's law[ I=U/R; I: Current, U: Voltage, R: Resistance]; In other words, the larger the resistance, the higher the voltage.