Q:The difference between the series DC power supply and the parallel DC power supply

There are many ways to classify the regulated power supply, and the DC power supply and the AC power supply are connected according to the type of the output power supply. According to the connection mode of the voltage regulator circuit and the load, the series power supply and the parallel power supply are connected. Working conditions are divided into a linear power supply and switching power supply; according to the type of circuit is divided into a simple power supply and feedback power supply, and so on. DC power supply specifications can be divided into two categories: one is the characteristics of indicators, reflecting the inherent characteristics of DC power supply, such as input voltage, output voltage, output current, output voltage adjustment range; the other is the quality indicators , Reflecting the advantages and disadvantages of DC power supply, including stability, equivalent resistance (output resistance), ripple voltage and temperature coefficient.

Q:Voltage range: 0-30V, current range: 0-5A, the power output can charge the car battery?

There are many kinds of car level, usually as long as the maximum current charger does not exceed the battery charge current; the maximum voltage of the charger, not more than the battery voltage, can be charged. But it is best not to use this, because the charger is usually constant voltage, constant current charge. In other words, the battery is not enough constant current charge, the battery is saturated when the constant voltage charging. But if you can not find the right charger, the above adjustable power supply can be used as a charger, but pay attention to the charging current, otherwise the battery easily affect life.

Q:DC power supply function is?

Output a stable DC voltage.

Q:Mobile phone charger principle (output mode)

Yes, but you have to know that it is different from the DC power supply, mobile phone charger output current will not be great, there are some charger output voltage is not clear, because it is constant current charge!

Q:AC power supply and DC power supply difference

AC power supply and DC power supply difference is: AC power supply is stable AC power, DC power supply is stable DC

Q:DC power supply is generally composed of several parts

It can be in the grid voltage and load current changes, to maintain the output DC voltage stability. It is an important part of DC power supply, DC power supply determines the important performance indicators.

Q:DC power supply technical indicators which

DC power supply specifications can be divided into two categories: one is the characteristics of indicators, reflecting the inherent characteristics of DC power supply, such as input voltage, output voltage, output current, output voltage adjustment range; the other is the quality indicators , Reflecting the advantages and disadvantages of DC power supply, including stability, equivalent resistance (output resistance), ripple voltage and temperature coefficient. 1, the characteristic index (1) output voltage range In line with the DC power supply operating conditions, the normal working output voltage range. The upper limit of this indicator is determined by the maximum input voltage and the minimum input-to-output voltage difference, and its lower limit is determined by the reference voltage inside the DC regulated power supply. (2) Maximum input - output voltage difference This indicator characterizes the voltage difference between the maximum input and output allowed under the normal operating conditions of the DC regulated power supply. The value depends mainly on the voltage regulation of the DC regulated power supply. (3) minimum input - output voltage difference This indicator characterizes the voltage difference between the minimum input and output required to ensure proper operation of the DC power supply. (4) Output load current range The output load current range, also known as the output current range, in this current range, the DC power supply should be able to ensure compliance with the indicators given by the indicators.

Q:There are positive, GND and negative, GND and negative connected together.

1, the power supply is the two output terminals to negative as a reference, you can think it is a positive power supply, with positive as a reference, it can be considered a negative power supply. 2, DC power supply refers to the ambient temperature, load size, input voltage and other factors will make the DC voltage regulator output voltage changes in the power supply. 3, the power supply of the classification of many methods, according to the type of output power supply DC power supply and AC power supply; according to the regulator circuit and the load connection is divided into series power supply and parallel power supply; The working status of the tube is divided into linear power supply and switching power supply. According to the circuit type, there are simple power supply and feedback type power supply. So many of the classification is often so that beginners puzzled, do not know where to start. In fact, it should be said that these seemingly a lot of classification between the methods have a certain level of relationship, as long as the level of this level can naturally distinguish the type of power.

Q:The main reason for the instability of the output voltage of the regulated power supply (only about thirty words is briefly summarized)

1, the grid input voltage instability 2, the load changes formed 3, the regulator itself to promote the conditions 4, components due to temperature, humidity and other environmental impact And change its performance

Q:Ac variable dc power supply with proteus can be achieved?

Such as Figure 220v AC transformer for the 30w 36v, circuit output positive and negative 15v, plus or minus 12v and plus or minus 9v, 78XX get positive voltage, 79XX get negative voltage, as long as you are, then the 79XX circuit removed. There are 7805 that the output is 5v, 7812 output is 12v, the same 7806 output is 6v, if you want to get the voltage, the figure will be changed to 78XX chip you want the voltage chip can be. 3v can be obtained by the partial pressure method For example: 7806 output termination of the two series 10KΩ resistor, the middle leads to a line and ground as a 3v output can be.