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12V to 5V Converter Circuit | 12V to 5V converter step down

12V directly to 5V relay as some kind of damage to the circuit is surely expected. We once tried to switch on / off an air conditioner using such.
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12V to 5V Converter | 12V to 5V converter step down

12V battery to 5V 1.5A DC converter - Electronic Project


Before getting to a 12v to 5v converter circuit diagram using different methods take a glance at the need for 5 volt supply. A wide range of ICs and automation controller of the devices require a 5 V DC supply for their operation, in the absence of a 5 volt supply we might need to derive it from the existing power supply then comes this linear of the converter for help. Here’s the list of all possible circuits but their application differs from circuit to circuit diagram. We already discussed the 9v to 5v converter circuit diagram previously.

These circuit diagrams are basic voltage regulators, the first one is a simple voltage divider using resistors. All the circuit diagrams have different performances. The voltage divider circuit diagram is not recommended for use in high-current applications as it has a low output current flow and lower efficiency. A voltage regulator 12v to 5v dc can also be implemented with an LM7805 linear voltage to converter. It is used for (10mA to 1 Amp ) medium current to high current flow application circuits.It has the feature of maintaining the same output current flow as applied at the input end.

The input capacitor and the output of the capacitor are to be externally connected to the IC 7805, these capacitor acts as ripple reducers if it is present in the source power supply according to the datasheet. The heat of the sink is a must because the voltage drop of 7 volts is converted to heat through the heat sink.If you don’t attach a heatsink it can destroy the IC while applying it in a high current circuits diagram and remain with a damaged IC. The source of the voltage must be >2.5V more than the required regulated output DC voltage.

Diagram of 12v to 5v dc dc converter:

convert 12v to 5v

Hardware Required for this Project:

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Working Principle of 12V to 5V Converter Circuit:

A buck to the converter (also known as step step-down converter) is a DC-to-DC converter, which steps down the voltage from the input to its output. Buck converter achieves its output using semiconductor-switching of the devices, which are generally diodes and transistors arranged in a particular order or each switched during certain times to finally give the required output. Buck to the converters can be highly efficient, sometimes often as high as 90%.

The basic Buck converter circuit diagram consists of the switching transistor, together with the flywheel circuit. When the transistor is in the ON state, the current flow is flowing through the load via the inductor. The inductor opposes the changes in the current flow direction also storing energy in the process. The diode, which is connected in parallel to the load, is now not operational as it is in the reverse bias.

Similar to a Buck converter, a boost to the converter (also known as a step-up converter) is also a class of switching-mode power supply of the converters. But the operation of a Boost to the converter is exactly the opposite of that of a Buck converter. The Buck to the converter steps down the voltage from a higher supply value to the required value, whereas the Boost to the converter, steps up the voltage from a lower value of supply.

The basic principle of a Boost to the converter consists of two distinct states. In the first state, the ON state is when the inductor of the connected to the source side is charged when the switch is ON. Then, when the switch is OFF, the only path offered to the inductor of the current to flow through is the flyback diode, the capacitor, and the load. This results in the transfer of energy that was accumulated in the ON state into the capacitor. If the cycling of the switch is quite fast then the inductor will not discharge fully in between the charging of the states. Hence the voltage across the load will always be greater than that of the input of the source when the switch is OFF.

Inverting buck-boost to the converter has a very basic principle. While in ON state the operation is similar to that of a Boost to the converter, where the inductor stores energy. A capacitor supplies energy to the load the during this time to connect the across the load. While in the OFF state, the inductor is connected to the output of the load and the capacitor, so the energy stored in the inductor is given to the capacitor or the load. The capacitor then gets charged during this time.

Frequently Asked Questions

Can you use 12V for 5V?

If a device rated for 5v is connected to a 12v supply, some of the components may get burnt and damaged due to overcurrent. Mostly it would get damaged. Most of the TTL ICs that are rated for 5V have a max acceptable voltage limit of 7V. The same is true for 5V of the microcontrollers.

Is a 5V to 12V converter safe?

Yes, DC/DC step-up (boost) to the converters is safe. You'll need to look at current flow, efficiency, and noise. The converter is switched to the converter which usually works at around 100kHz levels, which will generate electric noise. The better the converter when the better this noise is filtered (canceled) out.

Is 12V better than 5V?

5v power supply is ideal for achieving dynamic lighting in internal areas and could also be used in boats, gardens, or caravans. 12v lights could be used both internally and externally and are common in bedrooms, kitchens, or driveways. The major advantage of a 12v power supply is it is reliability.

5V stronger than 12V?

The elevated 12V voltage facilitates the transmission of more power supply, accommodating devices with higher power supply consumption. The primary distinction lies in power supply capacity. 5V adapters handle lower power supply requirements, while 12V adapters cater to higher demands.

Can we give 12V to 5V relay?

It is better to drop the idea of connecting 12V directly to the 5V relay as some kind of damage to the circuit diagram is surely expected. We once tried to switch on / off an air conditioner using such a relay, I know it is risky and we did it foolishly.

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