i'm building a Halloween project with Resinprinted lamps. The 5 lamps have one led each that works on 3v (2X 1.5AA battery) and use about 7.5mA each. I want to equip each lamp with a small speaker (2W) that will be powered by a self build amplifier that uses 6V (4 AA batteries) which gets its sounds from a DFMini Player. This player has a working voltage of 3.2-5V but when i read other posts, its better to use 4.5V.
I have to power the project with AA batteries (because i have them already). The batteries are stored in a pack. I altered one battery pack so that it delivers 2x(2x1.5V)=3V for the lights. But i also have to have a 4.5V and a 6V output. I have read that a stepdown would be an answer to my problem? The thing is, i don't want more prints, i want to build it myself (as i will build the ampifier myself to). However, i have no blueprint for a device that will help me create 3 voltage outputs: 3V, 4.5V and 6V. I saw this video of something i'm after but the input can be 6v at the most (4x 1.5v).
Could anyone give me a suggestion as to what to do?
You have to connect a step-down voltage regulator (also known as a buck converter) to obtain a stable 3V output for the lamps. Make sure to adjust the output voltage of the regulator to precisely 3V.
Connect another step-down voltage regulator to obtain a stable 4.5V output for the DFMini Player. Use a buck converter module that can handle the input voltage range of your batteries (up to 6V) and adjust the output voltage to 4.5V.
3. Step-Up Converter for 6V: Since your batteries provide a lower voltage than 6V, you'll need a step-up voltage regulator (boost converter) to obtain a stable 6V output for your self-built amplifier. Look for a suitable boost converter module that can handle the input voltage range of your batteries (up to 3V) and adjust the output voltage to 6V.
Thank you. Is it possible to build a stepdown myself? Or is it cheaper to buy one?
Irt the step up converter. A patterypack of 4x1.5v is 6v so why do i need a step up? Couldnt i use a batterypack of 6v (4x1.5v battery) and connect the two suggested stepdowns and then have 6v, 4.5V and 3V ?
