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Development of multi-purpose power control system


A clever use of XOR gates following a brief analysis + Second, the Second Circuit set in 42 * the input of two input XOR gate, respectively A and B,[link widoczny dla zalogowanych], the output is L,[link widoczny dla zalogowanych], is not difficult to list their menu, such as Table 1. As can be seen from the menu or the door is to determine whether two different input signals (A, B) is the same gate. (-F switch to 45) Hf '● 『work in the high-frequency signal is called. Easily cause interference in the circuit noise. Therefore, in large-capacity electrolytic capacitors next to the regular and eight 'small high-frequency ceramic capacitor to prevent self-excited. County of welding components to the device pins should be as short as possible leads. To prevent unnecessary harassed (3) from L. ,, 』, (', Cs bandpass filter composed of the adjustment of its passband is very important. Sometimes for different diameter hollow induction coil,[link widoczny dla zalogowanych], the coil close to different degrees. Turns a half circle or a circle deviation. Differential capacitance a 3-L a pF will affect the upper and lower passband cutoff frequency. Index is expected to reach the requirements. this. for the signal characteristics of the circuit. We use TXJ322 type microwave signal generator sweep this carefully debugging part of the circuit, so that it 7O ~ 300MHz, the range with good frequency characteristics. (4) The high frequency circuit. in the design of printed circuit when the bottom line. should be noted that the circuit connection,[link widoczny dla zalogowanych], the device pins between the possible stray capacitance effects. power and ground should not form a loop in the circuit, the wiring should be the form of a tree. circuit traces as short as possible. In general occasions. u.PCJ651 should be added to shield the device. on the high frequency signal Other key components should also be added shielding found in specific debugging. When IJPCJ651 work is the phenomenon of self-excited, sometimes due to lower supply voltage, to eliminate self-excitation. in our computerized search and track the development of the receiver, using the above access 1:3 circuit. a good solution to demodulate the signal frequency of about 200MHz input signal and transmission problems between the computer system. to ensure that r the whole instrument has high accuracy and search sensitivity. actually. The interface circuit is very convenient applied to other electronic systems. when specific alignment. in accordance with the gradual adjustment. Supply voltage decoupling filter. proper shielding, reducing the principles of the connection. can ensure the required band circuit work. test that. when appropriate adjust the parameters of band-pass filter. and re-use of high frequency ECL divider, make the whole interface circuit in the past 1000MHz frequency range to work effectively. References 【He Limin. M a 51 series applications design. Beijing Aeronautics and Astronautics Press .19902 SHEN disk, Mcs a 1:3 51 computers connected with the application circuit examples. Beijing Aeronautics and Astronautics Press .19909 [difference: J ・ Marcus. Daquan electronic circuits. China Metrology Publishing DU .19914 world's newest IC manual. Chengdu University of Science Press, 19895ECL IC product manual. matt integrated circuit factory .1990 (Zhou Guangyi compiled and distributed) (Continued from page 2) are equal. The output of gate L 10, not the same L-1. L-type logic function for the L: B-A = A ④ B XOR gate Once you master the features and functions. not hard to figure 1, the four XOR gates (Q., Qz ,, Q) the corresponding input and output waveforms. Table 1 Table Tennis childhood described above crop A00001ll0l1l0 gangrene had a simple analysis. This circuit design, the key is to master XOR gate, thyristor circuit and, 'the circuit, and according to [on the way the concrete requirements,[link widoczny dla zalogowanych], flexible use of electronic technology knowledge. well-designed installation, more practice, will design a good exchange of electronic products for joint improvement, we developed the circuit will be displayed. to readers three components selected and installation of a good electronic circuit. also reflected the selection of components and installation. components to meet the domestic and international general standard parts for the system of standardized, modular lay a good foundation mentioned above, the advantages of this circuit The use of components, simple structure, easy installation, as long as welding is correct, do not adjust utility that can meet the design requirements, high reliability of the power adjustment module. In many modern scientific instruments as the power control unit, has broad application prospects. Reference linked Kuei l seedlings. TDw 1B microcomputer control of a physical therapy machine for micro-crossing. .1993.19 Kang Huaguang Chinese home spa equipment. E-book ebony basis. Du .1981.93 Beijing People's Education Publishing motor repair shop. Seika University Department of Automation. thyristor rectifier. Science Press .197 l (Ning compiled and distributed) * 45 *
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