What is a CNC voltage source and what is a CNC power supply

The numerical control voltage source is the power supply that allows the digital computer to send instructions through program control, adjust the voltage and other functions.

Pictured: CNC DC power supply is the most basic CNC voltage source.

Let the single-chip microcomputer pass through resistive control triode T1, T2, T3, because the current of the 2 pins of the 7805 regulated integrated chip is always 5mA, then.

When T1 is turned on, the voltage source outputs 5V;

When T2 is turned on, the voltage source output is 200 ohms multiplied by 5mA + 5V = 6V;

When T3 is turned on, the voltage source output is 400 ohms multiplied by 5mA + 5V = 7V.

Answer: The numerical control voltage source is an ideal power supply for the computer to use the digital program to control the sending of information instructions to adjust the voltage and other functions.

CNC is the abbreviation of digital control, and CNC technology is a method of using digital information to control mechanical movement and machining process.

A voltage source, or ideal voltage source, is a model abstracted from an actual power source that always maintains a certain voltage at its ends, regardless of the amount of current flowing.

A voltage source has two basic properties: first, its terminal voltage value u or a certain time function u(t) is independent of the current flowing. Second, the voltage source itself is determined, while the current flowing through it is arbitrary.

Divide a certain range of voltage, such as 0-6V, according to a certain spacing such as 10mV, and control it with IC.

CNC power supply: "quasi-digital" power supply before the advent of digital power supply. Generally, a digital chip is added, which is mainly used for protection control or management. Therefore, it is called CNC power supply. However, the power core control part is still analog.

Digital power supply: The real digital power supply refers to the power supply from the detection to the output of various control signals by the digital chip. The technical difficulty is very high.

Power supply for CNC machines and CNC systems.

In order to make the voltage of the machine tool not interfered with by the outside during operation, it is necessary to install a stabilized power supply to ensure the stable operation of the machine tool.

The asynchronous motor looks at the motor signage, or uses a multimeter, or you check the line, generally three 380, two 220, of course, there are two 380. DC or servo, stepping can only look at the cards.

In China, the power supply voltage of CNC machine tools is three-phase AC380V, 50Hz

As for the spindle drive inside the CNC machine tool, the voltage of the servo drive will be divided into three-phase AC380V and three-phase AC220V.

The power supply voltage of the CNC system will be AC220V, or DC24V, etc.

The AC control circuit of the machine tool will have AC220V, AC110V, etc.

The DC control circuit of the machine tool will generally be DC24V.

The lighting will have AC220V, or AC24V, or DC24V, and the voltage level will be marked on the servo transformer and control transformer, which can be viewed.

A DC power supply is a device that maintains a constant voltage and current in a circuit. Such as dry batteries, accumulators, DC generators, etc. A DC power supply has two electrodes, a positive electrode and a negative electrode.

The positive electrode has a high potential, while the negative electrode has a low potential. When two electrodes are connected to a circuit, a constant potential difference can be maintained between the two ends of the circuit, thus establishing a connection with an external circuit. In formation, an electric current is sent from the positive to the negative.

A DC power supply is an energy conversion device that converts other forms of energy into power circuits to maintain a constant current.

CNC DC power supply is a DC power supply controlled by digital technology.

The ideal constant current source should be extremely high internal resistance and extremely high voltage, so that when the load resistance changes, the current is basically unchanged. The internal resistance of an ideal constant current power supply is infinity, and it cannot be used in an open circuit.

Like other automatic control circuits, the power supply circuit must have a "sampling-control" circuit to achieve "constant current", when the "control" circuit adopts the "analog-digital" conversion can obtain high control accuracy, this constant current source can be called a numerical control constant current source.

It is this constant current source that can be programmed to adjust the current size. For example, at present, there are more ways to modulate the power supply current by PWM pulse width modulation, and there is also the use of analog (voltage) to modulate the current size. This is usually used more in the LED field.

In addition, the DC regulated and stable current power supply also has the function of constant current source, and the current of the power supply is controlled by the knob or keyboard through the DSP.

A reference for you.

1) Output voltage range: 0 steps;

2) The output shows that if you want to display the decimal number in hexadecimal, it is quite troublesome, and I will talk about it in the next section;

3) Counting and voltage adjustment are controlled by keyed switch;

4) output voltage, current, can be preset after the start of the fixed output of a certain voltage value, and can be set by the addition and subtraction button, each counting pulse can make the output voltage increase or decrease;

5) There is no ripple problem in this circuit, and the control of ripple coefficient should be in the generation part of the power supply, not here;

The working power supply required by the circuit (5V, 15V);

It is another typical paper talk, and it is not required for linear power supply or switching power supply.