## Monday, May 29, 2023

A voltage regulator is a very useful component, because it can provide the most common voltages such as 3.3V, 5V, 12V, 15V... A voltage regulator looks like a transistor. There are different types depending on the power you want to use. The most common are those built in the TO-92 and TO-220 "enclosures". Obviously, TO-220s have more power since they can usually handle up to 1A.

Voltage regulators are also very useful when using batteries since if, for example, a 9V battery is used and a 5V regulator is used, the circuit will maintain its operating voltage constant even if the voltage input varies somewhat. Thanks to the regulator, the circuit will maintain a constant voltage of 5V as long as the energy supplied at the input by the battery is sufficient to maintain this constant voltage at the output of the regulator.

We must not forget to associate the capacitors whose role is to adjust the voltage. This is especially important for all projects that require the use of microcontrollers.

The heat dissipated by the controller can be calculated using the following formula:

(Vin - Vout) X Iout = Power (Watts) (in heat)

Ex: (16V - 5V) X 0.3A = 3.3W of heat

Vin: Represents the input voltage in Volts

Vout: the output voltage in Volts

Iout: the current of use at the output of the regulator expressed in Amperes.

Power is the power dissipated as heat.

This calculation allows you to know if it is necessary to add a heat sink or not to your regulator.

A voltage regulator is a very useful component, because it can provide the most common voltages such as 3.3V, 5V, 12V, 15V... A voltage regulator looks like a transistor. There are different types depending on the power you want to use. The most common are those built in the TO-92 and TO-220 "enclosures". Obviously, TO-220s have more power since they can usually handle up to 1A.

Voltage regulators are also very useful when using batteries since if, for example, a 9V battery is used and a 5V regulator is used, the circuit will maintain its operating voltage constant even if the voltage input varies somewhat. Thanks to the regulator, the circuit will maintain a constant voltage of 5V as long as the energy supplied at the input by the battery is sufficient to maintain this constant voltage at the output of the regulator.

We must not forget to associate the capacitors whose role is to adjust the voltage. This is especially important for all projects that require the use of microcontrollers.

The heat dissipated by the controller can be calculated using the following formula:

(Vin - Vout) X Iout = Power (Watts) (in heat)

Ex: (16V - 5V) X 0.3A = 3.3W of heat

Vin: Represents the input voltage in Volts

Vout: the output voltage in Volts

Iout: the current of use at the output of the regulator expressed in Amperes.

Power is the power dissipated as heat.

This calculation allows you to know if it is necessary to add a heat sink or not to your regulator.