Jump to content
Electronics-Lab.com Community

Birdie

Members
 View Profile  See their activity

  • Posts

    16

  • Joined

  • Last visited

    Never

 Content Type 

Posts posted by Birdie

  1. Help Plz - Room Noise Detector

    in Projects Q/A

    Posted

    Hello...I reallyneed help
    I'd like to ask some questions about the room noise detector circuit in page :
    http://www.electronics-lab.com/projects/sensors/012/index.html

    1- How can i try simulation for it ?? as i tried Multisim 8 but i faild to find a mic so is there anyway for simulation ???
    2- Is it possible to work with a square wave signal as input instead of the mic ???
    3- what's the 2 poles 4 ways rotary switch & how can it be connected ???

    I'll be really glad if someone answers these questions  ???

  2. ATMEL 8051 project

    in Electronic Projects Design/Ideas

    Posted

    hi
    I need some help in my school project.. i'm supposed to make a temperature controling system... where when it's hot a fan works & when it's cold a heater works... My problem is that I don't know what the realy switch is .. i never worked with it before & i dunno its connection so can anybody help me please...

  8. 555 Timer problem

    in Electronic Projects Design/Ideas

    Posted

    hi
    i just wanna ask about something in the 555 timer... i have a school project which is about a digital clock.. i'm attaching a very simplified out line of the circuits.. i'm not attaching the details... anyway the problem is in the 555 timer ...i think it's not working properly so i just wanna know how to check it & to know if it working or not without using the oscilliscope...
    Do the values of R1, R2 and C1 make a difference ??? I'm using 10 Kohm & 2.2 Kohm resistors and a 100 micro farad capacitor.
    besides is there any way to check counters ???
    i hope u can help me.

    http:
    %7Boption%7D

    post-10159-14279142290784_thumb.jpg

    post-10159-14279142290873_thumb.jpg

×
×
  • Create New...