Q:DC power supply through what way to achieve the purpose of regulation

DC power supply is generally divided into two categories, one is linear regulator, the common is to use a three-tube voltage regulator tube, by changing the transistor base voltage to adjust the output voltage to achieve the regulator output Purpose, generally used in low-voltage regulator circuit, the transistor work loss is great, relatively serious heat, generally need a larger heat sink, due to the transistor limit, the output circuit is generally less than 5A, greater than the current need to adjust the tube in parallel.

Q:Will the DC power supply and DC constant current source of the respective characteristics

Regulator source, as the name suggests constant output voltage, Theoretically regardless of the input, how the voltage changes (must be higher than the output), the output voltage is constant Constant current source, constant current output, such as 100mA, regardless of the load can not change (not less than 100mA, otherwise the load current prevail), the output current unchanged

Q:What is the solution for a regulated power supply?

In the input side of the regulator. At present, due to power supply facilities and regional conditions and other factors, China's AC power supply voltage fluctuations are still relatively large. Especially in some remote, rural areas.

Q:DC power supply function is?

DC power function is to stabilize the DC power to stabilize the load in accordance with the required voltage, which is its function! DC power supply is the main role of the load to provide one or more groups of constant, no fluctuations, and can meet and meet the circuit or load working conditions of the DC power supply, is the DC power supply!

Q:What is the current of the DC regulated power supply?

DC regulated power supply current do not tune! Only regulator does not transfer flow! DC constant current power supply voltage do not tune! Only flow regulator is not pressure!

Q:What is the difference between regulated power and UPS power supply?

Can provide a stable voltage output are called power supply, also known as power regulator, referred to as the regulator. By use is divided into; AC power supply and DC power supply

Q:DC power supply which parts of the composition of the various parts of the role of what?

Stabilized voltage supply is the English name of the power supply, which is a load device can provide a stable AC power supply or DC power supply of electronic devices, thus we know that the two major power supply voltage regulator is AC power supply with DC Power Supply. Among them, the DC power supply refers to the load device can provide a DC power supply of an electronic device.

Q:What is the difference between regulated power supply and steady current power supply?

Regulated power supply referred to as the regulator source, when the input voltage or load changes can give the load to provide a stable voltage. The main technical measure of the regulator performance is the voltage regulation and load regulation, which allows the output current to vary over a wide range. For the constant voltage source, the general input voltage range of this parameter.

Q:Need a circuit, marked the size of the components, it is best to have a detailed calculation process. The circuit diagram can be viewed under MULTISIM Or send something to my mailbox Do good cash reward

Use LM317 to do 0-24V adjustable DC power supply, more difficult to do a 1.25V-24V adjustable DC power supply, the circuit is very simple. This is because the LM317 adjustable three-terminal regulator, the minimum output voltage of 1.25V, if the required power supply from 0V from the tone, the regulator circuit need to add a negative voltage, power input on the need for positive and negative Three input, the relative circuit is more complex, the general power supply is no need to switch from 0V, so there is no need to join the negative power supply. LM317 output using 1.25V-24V circuit is very simple, direct soldering can be used, the two diodes in the figure to protect the three-terminal regulator with, can not increase.

Q:What is the working principle of the series DC regulated power supply protection circuit?

Second, the cut-off ????? The cut-off type can be improved on the above protection circuit. ????? In the protection of the base of the transistor preset a voltage, such as 0.5 volts, at this time, the protection transistor will be turned on. And then the voltage across the detection resistor is superimposed on the B pole, when the detection resistor detects a voltage higher than 0.2 volts, the two voltages are added, the transistor is fully turned on, the CE is short, the regulator is shorted and the output voltage is approximately 0 , Protection is complete. ???? The cut-off benefit is that you can use a smaller sense resistor to reduce the power loss on this resistor.