dc voltage regulator circuit

Today, the circuit diagram of SD card module, found that the operating voltage of SD card is 3.3V, so need to use voltage regulator chip to convert 5V power supply to 3.3V voltage, so a little bit about the voltage

to use an LVS regulator to achieve high efficiency. Therefore, the lithium-ion Most of the applications that convert the pool voltage to the 3 V output voltage use an LVS regulator. Although the battery energy is not used at least 10 percent , The regulator can still ensure

small measureme Nts.If your goal is simply to increase the current sourcing capabilityof an op-amp, the canonical-by-doing it is:A transistor used in this configuration is known as an emitter follower.The configuration is also known as "common Collector", since the collector is shared between the input and the output of T He transistor.Your feedback elements go in the dotted box according to what are want the op-amp to does, just as if you hadn ' t added the T Ransistors.By incorporating Q1 in

Most isolated, offline SMPSS (Switched-mode power supplies), including flyback, forward, and resonant, must operate at INP UT voltages to 260V RMS. Some cases even use line-to-line voltages of 400V rms±10%, leading to increased component-voltage ratings and, thus, incre ased cost of the overall design. In such cases, it's preferable to use input-limiting circuits, allowing-increase the input voltage to 440V

the circuit infigure 1delivers programming voltages to a EEPROM under the control of an External DAC (not shown). You can replace the DAC with a potentiometer to create a general-purpose power supply operating from 12V and able to deliv ER a variable output voltage of 0 to 32V. Asfigure 1shows, a Linear technology LT1072HV variable-boost switching regulator, IC1,

2 Voltage Regulator diodes are commonly used in the circuit "ZD" and digital representation, for example, zd5 indicates a voltage regulator tube numbered 5.1. Voltage Regulator principl

Simple method of 220V alternating current to low voltage DC resistance buck The conventional method of converting 220V alternating current to low-voltage DC is to use the transformer to buck and then rectify the filter, but when the product is limited by the factors such as volume and cost, the simplest and most practi

tube is at least dozens of volts, the reverse pressure is only 5 V, so the output pin can be increased to cause the output port power tube burned, causing the power system short circuit. This list of commonly used NPN transistor 9013 illustrates the problem, from the following table can be seen from the emitter to the base of the breakdown voltage of only 5 V, the other transistors and MOS tubes are simila

First, the principle of DC circuit (1) Buck type converter Brief analysis: During the opening of the switching tube s, the current is charged to the capacitance C through the switch tube and inductance. When the switching tube s is off, the filter capacitance C is charged to r, because the inductor current cannot be mutated, through the RC circuit, D discharge

and R5. When the circuit is working normally, the pressure action of R4 and R5 makes the BG2 base electrode potential higher than the emitter potential, and the transmitting junction bears the reverse voltage. So the BG2 in the cut-off state (equivalent to open circuit), no effect on the voltage

the classic LM317 Adjustable-output linear voltage regulator offers a relatively high, if package-de Pendent, current-handling capability. In addition, the LM317 features current limiting and thermal-overload protection. With the addition of a few, you can enhance an lm317-based voltage regulator by adding a high-speed

The so-called power transfer is the input voltage through the pressure circuit to achieve the lift/buck function for the use of other modules, intelligent car production, the input battery voltage of 7.2V, the other modules required voltage as follows: Minimum system board/oled/Eagle Eye camera 3.3V, op amp power suppl

a diode, it is generally a silicon diode ... Rectifier diode function is to convert AC into DC, only one-way use, router power is added a buck transformer can make AC 220V DC 6 v. When a single DC bridge works, there are two diodes in the conduction state at any time, and the other two are in the cut-off state. When analyzing the working principle of recti

Electronic Circuits Require DC power supply to provide energy. Because the battery cost is high, it is generally only used in low-power portable instruments. Here we will discuss how to convert an AC power supply to a DC regulated power supply. The general DC power supply consists of the following parts: the rectification cir