Capacitors is to achieve a wide range of supply voltage and 60 datasheet and current combinations of one of the most critical passive components. While each of capacitors can store energy, but for specific applications, the capacitor dielectric technology selection plays an important role. capacitors in the power of the most important application is the storage of energy, surge protection, EMI suppression and 60 price and control circuit and 60 suppliers and so on. 1) energy storage capacitor energy storage charge collected by the rectifier and storage of energy through the converter leads sent to the power output. Voltage rating of 40 ~ 450 VDC, capacitance value 220 ~ 150 000) uF electrolytic capacitors between (such as EPCOS B43504 company or B43505) is more commonly used. Depending on the power requirements, the device someti...

In some areas of industrial control, because the scene is very complex, very high between the various nodes in common-mode voltage. Although the RS-485 interface uses a differential transmission, with a walk against common mode interference, but the common mode voltage exceeds the RS-485 receiver to receive the voltage limit, that is less than +12 V or-7V, the the receiver will no longer work, even when serious burn chips and 60 datasheet and equipment. solve such problems is through DC / DC power supply the system and 60 price and RS-485 transceiver power isolation; the signal through the opto-isolation, the complete elimination of common mode voltage. The way to achieve this scenario can be divided into the following two: (1) with a coupler, isolated DC / DC, RS-485 chip to build a circuit; (2) using two second...

This article describes several single-supply dual power supply circuit converts the example of electronic enthusiasts solve problems. Circuit shown in Figure 24-34. Figure 24-34 (a) is the most simple converter circuit. The disadvantage is that Ri, R2-hour choice of resistance, the circuit itself consumes large power: resistance is large with a load capacity and 60 datasheet and weak. Practicality of this circuit is not strong. the figure (a), two resistors for the two large capacitors becomes Figure 24-34 (b) shows the circuit calendar. This power dissipation is reduced to zero for positive and 60 price and negative power load equal to or approximately equal. Figure 24-34 (c) circuit in Figure (a) adds two transistors to enhance the circuit with a load capacity, the output current depends on VT] and 60 suppliers and VT2s largest...

Impedance matching is the source or transmission line and 60 datasheet and load an appropriate match between the approach. Divided into low and 60 price and high frequency impedance matching two cases. start with the DC voltage source driving a load of staff. As always the actual resistance of the voltage source (see the output impedance of a question), we can be equivalent to an actual voltage source an ideal voltage source and 60 suppliers and a resistor R in series model. Assuming the load resistance R, electromotive force for the L,, resistance is r, then we can calculate the flow of electric current parlous R:, = U / (R + r), can be seen, the smaller the size the load resistance , the output current increases. The voltage on the load R: U. - IR-U [1 + (r / R)], we can see, the greater the load resistance R, the output voltage U...