5v converters

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Reply to akashaniksarkernik. Reply to raihan. Reply to asif ali nawaz. Please check for damaged parts and shorts. Reply to naman jain. Can i use for 12 volt 10 watt led light to 5 volt power input??? Reply to Sumit. MCPE player. Reply to Mike. Reply to MCPE player. You will probably see a voltage drop on output and maybe overload protection will engage.

Reply to Roope. Dear, where can i find the dimensions of the printboard? Reply to WWWL. Reply to m. Can i use it to convert 5v charger output to power an led strip? In addition, there is another converter which is a combination of the two arranged in some form, the more popular one is Buck-Boost converter which first lowers the voltage and then steps up to the required value.

I will try to explain each of the above-mentioned converters in some detail so that the understanding of the upcoming circuitry makes more sense.

A buck converter also known is 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 devices, which are generally diodes and transistors arranged in a particular order and each switched during certain times to finally give the required output.

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

The current flowing in the circuit also charges the capacitor. Now, when the transistor is turned OFF, the charged capacitor and the inductor apply a voltage across the load because of the back e.

The energy stored in the inductor is sufficient for at least a part of the time the switch is open. The diagram below shows a simple Buck converter operation. Similar to a Buck converter, a boost converter also known as step up converter is also a class of switching-mode power supply converters.

But the operation of a Boost converter is exactly the opposite of that of a Buck converter. The Buck converter steps down the voltage from a higher supply value to the required value, whereas the Boost converter, steps up the voltage from a lower value of supply. The basic principle of a Boost converter consists of two distinct states. In the first state, the ON state is when the inductor 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 current to flow through is the flyback diode, the capacitor and the load.

This results in the transfer of energy which 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 states.

Hence the voltage across the load will always greater than that of input source when the switch is OFF. The diagram below shows a simple Boost converter operation. It has greater or less output voltage magnitude than its input voltage magnitude. Inverting buck-boost converter having a very basic principle.

While in ON state the operation is similar to that of a Boost converter, where the inductor stores energy. A capacitor supplies energy to the load during this time is to connect across the load. While in the OFF state, the inductor is connected to the output load and the capacitor, so the energy stored in the inductor is given to the capacitor and the load.

The capacitor gets charged during this time. A simple diagram below shows the working principle of a Buck-Boost converter. MC is a monolithic control circuit having all the functions required for the construction of DC-to-DC converters.

It consists of multiple functions, which are comparator , oscillator, high current output switch and active peak current limit.

There are eight pins in each. The table of which is given below. The circuit shown here is the circuit for low current mA applications, suppose we have to take reference voltage for comparison or a very low current drawing circuit of an LED indicator. You can connect two LEDs in series across the output of R2 resistor if you are using a 9volt battery as an input. It is a simple voltage divider configuration. You can design the output voltage according to your need by using this formula:.

Vin is the input voltage. Choose any resistor value either R1 or R2 more than 1K Ohm and calculate the other one.

Then pick the nearest standard value of the resistor. The circuit shown below is for medium current applications, it is useful for mA medium current drawing circuit eg.

Use this 9v to 5v converter step down circuit with any other circuit in parallel to the output of zener diode with a 9volt battery as an input. You will get approx. Important: Load must be connected all the time at output end while testing or while using it in a circuit to prevent zener diode from being damaged. Working: It is the most common circuit of zener diode in voltage regulator configuration.

You make the output voltage work according to you by changing zener diode ratings and Rs series resistor. Using the zener regulator circuit and calculate using the following formulas:. The maximum current flowing through the zener diode.

The minimum value of the R S series resistor. The zener current I Z at full load. A 9v to 5v voltage regulator can be implemented with an LM step-down voltage converter. It is used for 10mA to 1 Amp and more medium to the high current application.

The unique about this circuit is its ability to provide the same output current as applied at the input end. Important: One needs to connect the input capacitor and an output capacitor to the IC to work as stated according to the datasheet. The heat sink is a must because the voltage drop of 4 volts is to be dissipated as a heat though the Heat-Sink. The absence of heatsink will destroy the IC and you will be with a damaged IC.

The input voltage must be at least 2. The integrated circuits that offer linear voltage conversion and regulation are often named as transformer ICs. Here, we have discussed 9v to 5v DC converter using IC