How many watts of equipment can the three terminal regulator tube 7805 carry?

Three-terminal regulator.

The output voltage and output current of the 7805 determine the power of the load.

The 3-terminal regulator 7805 is available in several different packages, with different output currents despite the 5V output voltage.

Here are the different package versions of the 7805: 78L MS H P05 <>

e.g. 78L05, output, driveable load.

78H05, output 5A, can drive a load of 5Vx5A=25W.

The most common 7805, with an output of 1A, can drive a load of 5Vx1A=5W.

Look at the package. If it's a T220 package, there's no heatsink about.

The factors that affect the load capacity of a regulated IC are: 1. Package form and heat dissipation area. 2. Input-output pressure differential.

Different models, different packages, the rated output current is different, 78L05 is, 78M05 is, 7805 is, 78S05 is 2A, usually refers to the kind, the maximum output power is 5 * watts.

The 7805 is rated for 5W of output

The output voltage regulator current of the three-terminal regulator tube is 1 A (load is 5 watts), and the circuit diagram is as follows

The input voltage of the 7805 regulator tube should not be too high (6 10 volts or so is the best), too high will increase the burden of the regulator tube, and it is easy to heat up, therefore, the heat sink should not be too small, especially when working at full load.

1. You didn't tell how much current your device is.

There are a lot of packages.

3. The ordinary 7805 can output current (add a heat sink) 4. The gold seal 7805 can output a current of 5A (heat sink is required).

The parameters of the 7805 three-terminal regulator are as follows:1、pin：igo。

2、iout(a)。

3、outputvoltage 。

4、outputvoltage 。

5、vi(v):35。

6. Package form: TO-220.

The biggest function of the 7805 three-terminal regulator is to step down the voltage and stabilize it to a fixed value before output. The common three-terminal regulator block can be divided into two types: positive voltage regulator block and negative voltage regulator block, the positive voltage has 78 series, and the negative voltage has 79 series, and the two series are not interchangeable, so do not mix them up when choosing.

The 7805 three-terminal regulator maintains the output minimum input voltage parameter very important, if it is to output the desired output voltage, the input voltage must be greater than this value, otherwise the desired output performance will not be obtained. The 7805 requires a minimum input voltage to:

Yes, it is our commonly used 7815 three-terminal voltage regulator manifold! It's just a different name!

This kind of voltage regulator only has three pins and outlets: input, output and common, so it is called a three-terminal regulator and only needs to connect one capacitor in parallel between its input, output and common terminal. The W78++ series is the output positive voltage, followed by the next two digits (++) indicating the output voltage of the regulator. There are a variety of models.

There are two main kinds of three-terminal regulators, one output voltage is fixed, called fixed output three-terminal regulator, and the other output voltage is adjustable, called adjustable output three-terminal regulator, the basic principle is the same, all use series voltage regulator circuits.

In the integrated voltage regulator, because the three-terminal regulator has only three lead-out terminals, it has the advantages of fewer external components, easy to use, stable performance, and low cost, so it has been widely used.