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  1. MP1

    pc monitor

    Actually I am very familiar with this problem. I work in the world of manufacturing and export to all countries. I have seen a lot of this. Customs agencies can charge pretty much what they want. Warranty or not. MP
  2. MP1

    wireless USB data

    How is it presently connected? Depends on what you have. There are many different packages out there. Normally all you need is a one way communication, but if your computer program sends an acknowledgement to the camera then you will need two way communication. If there is a memory in the camera...
  3. MP1

    digital amperemeter

    What are you measuring? What is the connection to the PC port doing? This request does not make sense to me. If you are measuring current on the parallel or serial port, these are limited with internal resistors. If the serial or parallel port is used to communicate something to the PC, then you...
  4. MP1

    Electronic Memory!

    Good point, Alun. He would certainly need to isolate the circuit with a diode. Not sure what is inside the equipment he is using, but, yes, if he has a regulator, he could get more efficiency by adding the cap after the regulator. Perhaps Mukhalled could give us more information about this...
  5. MP1

    Electronic Memory!

    Who said anything about powering up a pc? He said he was powering the CD player from a PC. Not the PC. This would be powered from 12 volts and would be no different than any other peripheral in the car. However, if he DOES have a PC motherboard in the car powered from the 12 volt car supply...
  6. MP1

    AC motor and power inverter, can it work?, 1hp ac motor, 12v to 120ac 2000w inve

    Measure the start up load of the motor while attached to a mains powered circuit. You probably just need a larger inverter. I have seen equipment that draws 2 to 3 amps continuous, but which needs 10 amps available due to start up. MP
  7. MP1

    Electronic Memory!

    Mukhalled, If you are only concerned with momentary spans of time such as the switch moving from the accessory position to run, then you can add a large value Electrolytic capacitor between the positive power voltage and ground wires of your CD player. When your player goes off, it will take...
  8. MP1

    Led display Digital Voltmeter question

    Normally you cannot use what you are measuring as the power supply to the device that is doing the measuring. Is this what you are attempting? Unless your device specifiically says it will do this, it will not. I am pretty sure this was addressed in one or more of the previous posts in this...
  9. MP1

    Are there any wireless tape measures?

    Try this link: http://www.radiolabs.com/products/electronics/instruments/electronic-tape-measure.php MP
  10. MP1

    Led display Digital Voltmeter question

    I did not mean to give you such a generic answer. It will depend on the specs of your amp meters. Check what is allowed for power requirement to operate the meter vs input volt/current ratings. I doubt there is a problem with the one on the 5 volt source, but the one on the 30 volt source might...
  11. MP1

    Led display Digital Voltmeter question

    I am not sure what you are working with. The amp meter should be connected in series with the varying input voltage to the digital voltmeter. Does it need additional power? How did you intend to connect it? You should not power it with the varying voltage. If it needs to be powered, you should...
  12. MP1

    Led display Digital Voltmeter question

    This just assures your reference voltage, ground on the chip, and ground on the input are all at the same zero potential in this design. Attached to this post are the original eagle files. You can get a free copy of EagleCAD in our download section. The attached zip file will give you the...
  13. MP1

    Led display Digital Voltmeter question

    Some corrections were posted and then I think I merged all the topics together. They should all be in this thread. That is most likely why some of the old links do not work. Have you read all of the previous posts? I have previously posted a schematic and board layout in eagle format. Others...
  14. MP1

    MODERATOR!

    Send a personal message to "admin" to contact mixos. MP
  15. MP1

    MOVED: Orcad Layout

    This topic has been moved to Spice Simulation - PCB design. http://www.electronics-lab.com/forum/index.php?topic=4676.0
  16. MP1

    MODERATOR!

    How much money do you have? I might sell mine if the price is right.   :-\    ;D MP
  17. MP1

    hot air gun

    Thunder, since this is an International site and many, perhaps most members, do not use English as their first language, perhaps it would be easier for others to know what you are saying if you do not use slang or abbreviated synonyms and numbers for words. You might get more help with requests...
  18. MP1

    Led display Digital Voltmeter question

    Did you use the modified circuit or the original which had some errors? How is your reference voltage? Have you included all of the capacitors or deleted some thought to be unnecessary? Others have reported excellent results, so you will have to take a close look at what you have put together. MP
  19. MP1

    4017 Problem

    No. Alun is correct (except that 2 4017s will not give 100 counts). To get a continuous count, you simply gang up the 4017 counters. The last count is used to start the next 4017 and so on... MP
  20. MP1

    ABS Plastic

    Rhonn, I found another site offering the ABS vacuum table. It is here: http://www.pulsar.gs/UNIVAC/index.html Hope the link is helpful to you. MP
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