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  1. Electro132

    How to get a strong signal over a long distance

    Hi, Just wondering how can a single picture travel over long distances such as 1km and not lose its accuracy? i know it involves a large amount of voltage as low doses couldn't travel far. So in short what i know is that the distance a single image can travel is dependant on how much...
  2. Electro132

    Pulsated LD

    Yes it is. I know that 7.2 V was the other limit for this particular circuit but i found out that 9 v works just the same with 2x 10 ohms res. Why do i need to stock up?
  3. Electro132

    Pulsated LD

    Hey I know i said i'll load up the vid but for now here's the circuit i made. I promise to load up the vid soon, probably tomorrow. Cheers
  4. Electro132

    Pulsated LD

    Hi, I just wanted to let you know that i got my LD working finally. Although there was a mistake in the circuit, i managed to make it work. I'll post the video soon. :) I got the VarRes to make the LD become bigger or smaller depending on the amount of current going through the...
  5. Electro132

    Amplitude and Frequency

    I got hold of the resonating frequency of 880 hz for the red wine glass and 3200 - 3280 hz for the honey jar. The honey jar was hard to do and took me about an hour to get it to resonate so it is still unsure what the resonating frequency is exactly. But the good part is that i managed to...
  6. Electro132

    Amplitude and Frequency

    Ok thanks.
  7. Electro132

    Amplitude and Frequency

    I have a honey jar to experiment on as well but i found out that it was either too damp or i was not reading the screen right when i hit it with a pen to get its resonance frequency. Would you be able to help out? I tried locating the top peak of the honey jar and db but didn't get it to work...
  8. Electro132

    Amplitude and Frequency

    Do you mean something like this
  9. Electro132

    Amplitude and Frequency

    Just with your diagram of the mic, is the output connected to the end of the negative lead on the mic or does it go over?
  10. Electro132

    Amplitude and Frequency

    ok cool, i found this mic pre amp to receive the incoming signal to the laptop. One of them doesn't have the values so i might need your help on it. The other one i'm not sure how to calculate the cap needed at the output and also whether i need to attach an amp to it before it goes into the...
  11. Electro132

    Amplitude and Frequency

    Sorry forgot to attach the schematics Lol :) Just wanted to know, don't i have a better chance of gaining a stronger signal with more voltage? If i started off the frequency at a low voltage then that will be the starting point of the frequency won't it? Or the voltage doesn't do anything to...
  12. Electro132

    Amplitude and Frequency

    Hey i've attached the drawing of the components. But still needing to do the test with the wet finger to the glass. Ok i've managed to get hold of a 5W 8 ohm speaker. Do you think that will do or will it burn out?
  13. Electro132

    Amplitude and Frequency

    Lol i know, but there wasn't another table available at the time i took it. At least it doesn't obstruct the other labels of the picture that are visible :)
  14. Electro132

    Amplitude and Frequency

    Do you think Audacity can measure it? I don't know of any other software that can. By what you say i'm guessing that i attach the small speaker on the oscillator circuit. I just don't understand the 2nd bit - do i need to have another oscillator with a speaker attached to the computer on...
  15. Electro132

    Amplitude and Frequency

    Hey duke37, i've completed the amp and tone part for the wave. The square is using caps in the 22 uf for the IC output and 0.022 uf between the trigger and the negative -Vss. The toner is using 0.004 uf from the output , 0.1 uf for the effect output and 0.01 uf for ground. I've attached some...
  16. Electro132

    What can i do with Quartz Crystals?

    How about from an LD? you can put frequencies into LD's and make that produce sounds since it can transfer music wirelessly.
  17. Electro132

    What can i do with Quartz Crystals?

    Found this online http://members.iinet.net.au/~davem2/overclock/osc.html Might come in useful. Do you think i can make a wine glass break at that frequency?
  18. Electro132

    What can i do with Quartz Crystals?

    Hi i found this part in my kits and want to know what i could do with it. It is a 25 mhz quartz crystal. (pics are provided) Any ideas? Could i use this in a circuit to produce waves, radar, telecommunications, etc.?
  19. Electro132

    Amplitude and Frequency

    Well i was thinking if there was a bunch of frequencies that could be chosen to resonate rather than just one frequency then the wine glass might break. But then again, i just realized that if it was just one specific frequency being used and variable resistors were to be used to change the...
  20. Electro132

    Amplitude and Frequency

    A transformer can do sine waves as well since it can switch back and forth. I agree with you that sine wave would be the best option but the most simplest option would be to build a square wave. With the square wave, you can have a Variable resistor added onto the threshold (6) and output...
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