# DC to DC Voltage Step-up Booster Circuit 90V (High Efficiency)

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## Introduction: DC to DC Voltage Step-up Booster Circuit 90V (High Efficiency)

Hi!

In this instructable, you will learn how to make a DC to DC voltage Step-Up booster circuit.

Input= (0 to 7V) and Output= (90.8V).

Items Needed:

2. 2 power transistors 13009
3. 2 x 1 kilo ohm resistors
4. 2 inductors
5. 1 single phase bridge rectifier
6. 1 capacitor 250 volt 4.7 uF.
7. wires
8. 1 battery 3 volts to 7 volts.

For better understanding and "Full Circuit Diagram" watch the video

## Step 1: Power Transistor:

The power transistors used here are 13009.Connect them to the breadboard as shown in the image. now take the one kilo ohm resistors.Connect one terminal of the resistor to the base of one power transistor while the other terminal of the resistor to the collector of the other power transistor.Do the same with the other resistor.Take two similar colored wires and connect them to the collectors of both the power transistors 13009 as shown.

For better understanding and "Full Circuit Diagram" watch the video

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## Step 2: Further Connections:

Get two identical inductors 50 mH each.Connect them in series.

Now you will have three terminals from the inductor set.One is the center tap and the other two are the endpoints of the inductors.Connect the inductors to the collector terminals of the power transistors as shown in the pictures.

Now take a bridge rectifier and connect its AC terminals to the end points of the inductors and to its DC terminals connect a capacitor accordingly.The amplified voltage will appear across the terminals of the capacitor (250V 4.7uF).

Connect the emmitters of the power transistors together which will be the common negative.

Connect a wire to the tapping point of the inductors which will be the common positive.

For better understanding and "Full Circuit Diagram" watch the video

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## Step 3: Testing the Circuit:

It's time to test the circuit & confirm if it is working or not.

Firstly take a multi-meter and check the voltage of the battery.Now connect the positive terminal of the battery to the center tapping point of the inductors while the negative terminal of the battery to the common emitters of the power transistor.

Now check the voltage of the capacitor with the help of a multimeter. It should reflect some where b/w 85V to 92V.

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Circuit diagram is provided in the video.

Thankyou.

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