JEEE 1394 works as follows: (1) IEEE 1394 bus topology. IEEE 1394 serial bus topology can be divided into two environments: the environment and 35 datasheet and the bottom cable environment. Bus connections between different environments require bus bridge. Cable environment, the physical topology is acyclic network structure, each node connected by a cable between the port, the branch was extended to form a tre...

Filter capacitor in the switching power supply plays a very important role, the right choice filter capacitor, especially the choice of the output filter capacitor is every engineering and 36 datasheet and technical personnel are very concerned about. 50 Hz frequency circuits used in common electrolytic capacitors, the ripple voltage frequency of only 100 Hz, charge and 36 price and discharge time is orders of magnitude of mil...

PCB soil of any one of the traces in the case of high-frequency signal will cause the signal delay time, snake-like alignment of the main role is to compensate for "the same group of related" signal line delay smaller parts that are usually there is no or less than other signal processing through the addition of logic; the most typical is the clock line, usually it without going through any other ...

The production of PCB should pay attention to the following matters: (1) a reasonable partition the circuit board, such as the strong, weak signal, digital, analog signals. As far as possible interference sources (such as motors, relays) and 34 datasheet and the sensitive components (such as SCM) away from. (2) and 34 price and high-power single-chip device to separate down to the ground, to reduce mutual interference. Hig...

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RF (Radio Frequency, RF) is the RF current, it is a high-frequency electromagnetic waves referred to the exchange variation. Changes less than 1000 times per second, known as the low-frequency alternating current, more than 10,000 times as high-frequency current, while the radio is such a high frequency current. Audio: Audio signal is a continuous analog signal, the audio signal on the formation...

IEEE 1394 bus standard important feature is that it has developed a set of three protocols to standardize the host and 39 datasheet and interact through the serial bus peripheral. The three agreements include: the exchange layer, link layer and 39 price and physical layer. Management of these three levels of the bus link. (1) exchange layer: Defines the request response protocol to perform bus transfers, it hides the users a...

Node voltage node voltage method is based on the independent circuit variables as circuit analysis methods. Choose a node in the circuit as a reference node, and 38 datasheet and the remaining nodes and 38 price and the voltage between the reference point called the node that corresponds to the voltage. Polarity of the voltage reference node are nodes corresponding to positive polarity side of the reference node for the negati...

First, that the generation of ECG: heart rate at all times in accordance with a certain beat and 36 datasheet and rhythm, the heart with each beat, first excited to produce electricity, electric excitement began in the sinus node, and 36 price and along the cardiac conduction system under the special pass, has excited the atrium and 36 suppliers and ventricle, the systolic implementation of pump function. This has ordered the spread of excitab...

IEEE 1394 cable was designed, which contains 6 copper wire Yin: Two-Unit is responsible for power supply, the other four share two twisted pairs, twisted pair signal Figure 14 - 5 six-core cable profile shown in Figure 14-5. Among them, the power supply line voltage is maintained at between 8 ~ 40V DC current can be up to 1.5 A, the role is to: (1) power failure or failure to maintain the ...