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  1. MP1

    Convert 0-30V 3A PSU to 5A or more

    xenobius, You should compare these changes with the paragraph in the project of how the supply works. It looks like there will be problems with the limiting circuit with these changes. MP
  2. MP1

    Drilling IC holes in a PCB

    This is why it is better to use a layout that shows the hole in the pad. There will be a little hole in the copper which makes drilling easier. On solid pads, the drill bits tend to walk before biting in. MP
  3. MP1

    LED Circuit

    Why not make your own circuit board with either perf board or using one of the kits with etchant? If you are in a great hurry, perf board would be a good way to go. You could use wire wrap to make your connections. MP
  4. MP1

    Drilling IC holes in a PCB

    I do not know of any alignment tricks other than using a magnifier so that the pads are easier to see when you drill them. However, when you make a mistake like this, you can still use the hole. Just bend the leg a little and make sure you are not touching another pad. You might have to remove a...
  5. MP1

    "Notify of Replies"

    I would not exactly call this reliable, noting the above comments... You have also wasted mixos time for a problem that does not exist on this system. It seems you have two choices: Upgrade or stop complaining. MP
  6. MP1

    Dual LM3886 Bridged Amp.

    The digital pots work fine in real world electronics. Audioguru, you have quite a habit of starting a new topic within the thread of a different topic. This thread is about LM3886. To go further on digital pots, you need to start a new topic. Otherwise I will have to chop up the posts again. MP
  7. MP1

    Homade Synth?

    PAIA electronics used to sell kits for synthesizers. You might be able to find some of their stuff on the web. They went out of business some time ago when they started gearing their synthesizers to commadore PET control. I do not think it was a good combination. Every so often, I see some of...
  8. MP1

    detector prototype

    Many of the newer appliances have things running even when the appliance is not in use. Most easily recognized is the clock, but some have other devices running caused by microprocessor circuits. In the case of these appliances, even unplugging them would allow the system to run on the back up...
  9. MP1

    KA7812

    ...however, if your multimeter shows a short between any of the pins, you can stop there and know that the device is bad. In this case, you would have a bad result by testing the circuit with power applied. MP
  10. MP1

    detector prototype

    audioguru, don't you have a test bench? You could try this idea yourself and report back to the group how your idea worked. MP
  11. MP1

    Led display Digital Voltmeter question

    You will need a negative voltage. A 7905 will only work with a negative input. There is a chip from maxim that will do what you want. It just converts your +5 to -5. Another way to do this is to use an inverter circuit to divide your battery voltage by two and give you a bipolar 6 volt supply...
  12. MP1

    s-video + audio to VHF/UHF (antenna cable)

    fudy, Try here: http://www.epanorama.net/links/videocircuits.html They have a few different schematics that might work for you. You can also use VHF and s video as key words in a google.com search for more possibilities. Please let us know how you came out with your circuit. MP
  13. MP1

    Mist MAker Via Oscilloscope???

    Inflak, without seeing the circuit it is hard to tell, but your scope might be interfering with the circuit, too. Since you have two units, it is best to rely on a comparison between the two rather than actual voltages and frequesncies. MP
  14. MP1

    Dual LM3886 Bridged Amp.

    I would assume that anyone upgrading a car stereo for better sound quality or loudness is going to also install a new speaker system. In this case, you would not have to worry about what is standard in a car. Also, I wanted to point out that there is really no longer a standard. Old cars had 4...
  15. MP1

    "Notify of Replies"

    The font setting on my 98 system is Times new roman and language is "Latin Based". My Internet Explorer 6 has all the language plug-ins, so I assume most of the work is done in the background. It sounds like you have the first version of 98. Perhaps you can find the second edition somewhere. It...
  16. MP1

    "Notify of Replies"

    audioguru, The laptop is at my other office, so I will look when I get there. In the meantime, I have found the following at microsoft: http://www.microsoft.com/downloads/results.aspx?productID=&freetext=internet+explorer&DisplayLang=en 1. Internet Explorer 6 Service Pack 1 Internet...
  17. MP1

    [OT]-Wierd virus

    I get 15 to 20 of these per day. Since they appear to be coming from legitimate e-mail addresses, there is not much you can do but delete. I have told everyone that I e-mail, that I will never send them an e-mail with no description of the attachment, so that no one opens one with my e-mail...
  18. MP1

    Need help with idea. Audio

    I think there is a circuit in the projects section of this site. You might have a look there. MP
  19. MP1

    Light Switch

    Siddharth, with this change you will have a voltage drop at the NPN transistor and then another voltage drop at the regulator. You will only have the voltage of the base of the NPN available to the regulator (less vbe), then the voltage drop I mentioned in a previous post. I no longer see a...
  20. MP1

    "Notify of Replies"

    The font displayed in your e-mail is determined by your operating system and your choices in outlook. The font is not downloaded. I have no problem accessing this with my win98 operating system on my old 350 MHZ PII laptop, so I doubt that it is a Win98 problem. You can get "Outlook 6 for...
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