Diy step-down converter

Naman Chauhan. Beginner Work in progress 1 hour Things used in this project. Zener Diodes. Custom parts and enclosures. Gerber Files. Programmer, electronic adept masquerading as Computer Science student. Follow Contact Contact. Related channels and tags power supply transformer voltage. Description We often need to supply our circuits with some specific amount of voltage to our circuits like a 5V DC circuit powering microcontrollers like Arduino.

These circuits have a maximum tolerance of 5V. If the voltage level goes beyond that, it can burn out the microcontroller. Thus, a regulated power supply is very important. The main question arises that how can we get regulated 5V or any other power supply. It's not possible many times to arrange the batteries of the exact voltages. Zener Diodes Zener Diode as a Voltage Regulator The Zener diode behaves just like a normal general-purpose diode consisting of a silicon PN junction and when biased in the forward direction, that is Anode positive with respect to its Cathode, it behaves just like a normal signal diode passing the rated current.

Disadvantages of Zener Voltage Regulator: It has poor efficiency for heavy loads because a considerable amount of power is wasted in Zener resistance R2 and series resistor RS in comparison with load power. The DC output voltage slightly changes due to Zener resistance. Linear Voltage Regulator 5. The disadvantage of Linear Voltage Regulator A serious disadvantage of linear regulators is their low efficiency in many applications. Read more ». View all details. PCB Design.

Similar Projects. A Supercap power backup solution for small devices. By medhatko Arab Hacks Follow. More by the author:. About: My channel is interested in electronics and doing projects at home with recycled gadgets More About medhatko ». Hello, Today we will learn how to make a buck converter using simple tools. Let us begin. The input voltage must rises the output voltage with 3 volts at least. Hai sir, By using only diodes converting vac to vdc is it practically working?

Is there any heating problems? Hi sasi, it'll work properly for smaller loads such as LEDs, CFLs etc but not for bigger loads…but this circuit might involve high risks of electric shock and fire.

It was made for V. The rest of the circuit is for v. I've tried contacting them, but they just give me the run around. I'm just not completely sure it will work. Thanks ahead of time. Hi, I have been able to convert to volts very easily and in safe way. Now Use multimeter to probe the AC voltage on different pair of input taps to get desired Voltage or around. Hello, I recently moved to US from Europe. Is there a way I can make it work on v input without changing the output?

But it is not providing V RMS at the output. What changes I need to make in this circuit? Hey Humaria, please try the second design which I updated just now…and let me know the response! It is an informative blog post about V to V converter circuit. People who are using to voltage converter would find it useful.

Great work! Is this possible? Can i use the capacitive power supply method that you show in this topic? The supply in our country is V. Yes you can get a variable DC by phase chopping the primary of the transformer at the specified level, the efficiency should be as per the normal iron core transformer specifications. After the rectification the ripple voltage equals 50Vac and so I need a circuit that can help to filter that ripple voltage to remain with Vdc without the Ac element, kindly assist!

Hi Cliff, I guess the ripple peak equals V and not 50V. This is normal and cannot be corrected without a complex circuitry. One way can be to use a light dimmer circuit at the V side which may be adjusted until the secondary of the transformer yields V DC after rectification. Dear Mr Swagatham, you page may be the most useful and believable one around us.

Thank you for that. I have V and W hot air oven. So how can I convert our V without any transformer using semiconductors. Thank you, Gunaratna from Sri Lanka.