Maker Pro
Login Join Maker Pro
Or sign in with

Menu

Connect With Us

Network

Recent content by lukesmith123

  1. L

    Getting 2 different power sources from a single source

    Hi, For my project I want to have 1 single power source from a power adapter and I need to power 2 circuits. one uses 12v at 3a and the other uses 5v at 1a Do I need a 17v, 4a power supply? How do I divide it in the way that I want?
  2. L

    Op Amp HiFi Project

    Ah ok thanks. I guess the speaker I'm currently using is a pretty good fit then.
  3. L

    Op Amp HiFi Project

    Ah I suspected as much. How would the size of the speaker effect this? For example would a lower watt speaker that was only 5cm in diameter (vs 10cm that I am currently using) be louder in this setup or am I better off sticking with what I have?
  4. L

    Op Amp HiFi Project

    Yeah paper one and I worked out it must be over 10 years old. The volume I'm getting is not bad as the vase the speaker is sitting in is amplifying it but I just want a little more volume. Should I get a 8ohm speaker rather than 4? What difference does it make? Can I get a speaker with...
  5. L

    Op Amp HiFi Project

    Yeah I was thinking that too. Do you have any advice on selecting one? Also, the speaker cone I am using is a really old one from an old HiFi. Would it be possible to get more volume by buying a new speaker? The main function of this system is to be used without an amp. The speaker...
  6. L

    Op Amp HiFi Project

    Ok thanks!
  7. L

    Op Amp HiFi Project

    Perhaps it would be a better idea then to add a power adapter to power the unit and only take the audio signal from the iPod dock. If I have power from the wall plug now, what kind of audio amp should I look for? 12v? what wattage?
  8. L

    3.3v Toggle Switch / Button

    I have a 3.3v power source powering my project and I want to put a switch in between it to act as an on off switch. Every kind of toggle switch I can find is rated at 12v or higher. Can I still use this or do I need something else? What kind of thing would be suitable for an on / off...
  9. L

    Op Amp HiFi Project

    I have built a nice little iPod dock HiFi with a small speaker cone placed inside a vase and connects to the headphone plug of an mp3 player. I wanted to improve on this by adding an Op Amp that could be powered by the iPhone. I read that the iPhone can output 3.3v, 160mA or more from the...
  10. L

    Digital Potentiometer

    Ok great thank you! Can I use a 12v SPST toggle switch on my 9v circuit like this one: http://www.ebay.co.uk/itm/Heavy-Duty-Toggle-Flick-Switch-12V-ON-OFF-Car-Dash-Light-Metal-12-Volt-SPST-/250929828186?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a6c95515a ??
  11. L

    Digital Potentiometer

    Hi, I am replacing an analog potentiometer with a digital one. I'm using the AD5220 digital potentiometer and connecting a 9v battery with a 5v 7805 voltage regulator. My question is, when the battery is connected to the digital potentiometer via the voltage regulator, will the...
See more
Top