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  1. audioguru2

    lots of new circuits

    I don't see any nails. Dazza, aren't you in Oz? Is this Oz? Where are you? I want to zoom-in on my Earth.Google progam:
  2. audioguru2

    The link telephone intercom

    In the project it tells you what type of phone to use. There are other Link intercom telephone projects in our Projects Section. At least one of them uses phones with a DTMF touch-tone dialer. ;D
  3. audioguru2

    Need a new Buckle for your belt?

    An hour ago I saw a guy with a blue one scrolling his name. He said he programmed it with its 3 buttons and took quite a long time to scroll through the alphabet for each letter. As a coincedence, I just happened to have my blue ultra-bright blinking flashlight in my hand when I met him. ;D
  4. audioguru2

    The link telephone intercom

    I just noticed that the transformer's 1k primary must be center-tapped. It is fairly common. I don't know your phones but this project uses phones with a pulse dialer or an old-fashioned rotary dial. A different project uses phones with a DTMF touch-tone dialer.
  5. audioguru2

    The link telephone intercom

    The transformer was used in transistor radios years ago. It is small and has a 1000 ohm primary and an 8 ohm secondary. Most electronics suppliers have Japanese ones for a couple of dollars.
  6. audioguru2

    FM Receiver Circuit

    Hee, hee Dazza, You mean a robot? ;D
  7. audioguru2

    FM Receiver Circuit

    It fades on even strong local stations and doesn't pickup weak ones. It scanned right past my powerful FM transmitter so will also miss his weak one. It is very noisy and distorted. Also, I don't think a nubee would be able to solder the tiny multi-pin surface mount IC. :( There might be a...
  8. audioguru2

    Electronic advise please ???

    Good idea! ;D Make an LED-blinker circuit with hundreds of vacuum tubes. It will keep you nice and warm in winter.
  9. audioguru2

    in car light.

    You are going to buy $180.00 worth of LEDs to get that low price?? ??? That's 1,636 LEDs. Enough to lightup the whole city. ;D
  10. audioguru2

    in car light.

    Hi again, I have always used Name-Brand American-made LEDs with a guaranteed minimum brightness rating, not just a "typical" rating like other makes. They all match perfectly. I recently bought locally some no-name cheap LEDs and half didn't work. The Indian store replaced them with their best...
  11. audioguru2

    FM Receiver Circuit

  12. audioguru2

    lots of new circuits

    Actually they didn't steal anything, since they have a link to here.
  13. audioguru2

    in car light.

    Hi Policeman, Check the spec's for those super cheap LEDs. They might increase their brightness by just focussing the light in a very narrow angle that can't be seen from a little to the side. 40 degrees would be a good angle, poor ones might be only 10 degrees or less.
  14. audioguru2

    Inverter Circuit 12V DC to 230VAC Sine Wave

    Hi Ante, There are many more N-channel Mosfets than P-channel. The N-channel ones have a much lower Rds and cost less than P-channel.
  15. audioguru2

    lots of new circuits

    Hey Glen! They even hyjacked the LED projects I posted here. ;D
  16. audioguru2

    basics of electrical supply

    Hi Shekhar, The neutral is connected to ground probably in the transformer down the street from your home. I think they ground it to provide a path to ground for lightning, and for any leakage current. If you worry about being shocked, then you should have Ground-Fault-Interrupters installed on...
  17. audioguru2

    Hum in the incoming signal

    Hee, hee. ;D ;D Maybe you could cram some memory modules for cameras into your head. But 1st you'll need to add a low-dropout 3.3V regulator for them, 'cause your existing brain probably operates at the obsolete 5V. Maybe you could also fit some little hard drives from MP3 players in there...
  18. audioguru2

    FM Receiver Circuit

    I don't think the shortwave narrow-band radio will work up on the VHF wideband FM broadcast band, to match his simple FM transmitter. :(
  19. audioguru2

    Inverter Circuit 12V DC to 230VAC Sine Wave

    Hi Ante, Since it pauses for half the time, then its transistor current must be double the amount of current in a square wave inverter. :o I wonder why it uses expensive P-channel Mosfets instead of better, cheaper N-channel. ???
  20. audioguru2

    FM Receiver Circuit

    Oh no! Now the super-regen is here. On another electronics forum there is a guy who tried many super-regen FM "radio" circuits to find one that works. 1) They are extremely distorted because they don't have an FM detector. They use their AM detector instead and you tune to the side of a station...
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