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  1. MP1

    breadboard drawings along with schematics

    If you get one of the free schematic programs from the web, you can re-draw your schematic so that all ICs and components are vertical. Then the lines connecting the parts, also referred to as "air wires" will show you the connections as they would appear on a bread board. Not exactly, but close...
  2. MP1

    grade 9-10 electronics

    I think electronics has come a long way since then. Courses such as these are a one-size-fits-all. By the 9th or 10th grade, I usually see students who have an area of interest. I have taught 10th grade students how to write their own Visual Basic programs to control motors and appliances from...
  3. MP1

    Thevenin

    Nice animation. Kind of like a mini power point....only problem I had was the speed of the animation. On my computer, the words were flashing to the screen faster than I could read them. I wonder if there is a way to set the delay  based on the processor speed. Were you going to give a short...
  4. MP1

    Volt regulator & Battery

    Alun, if you have an equivalent circuit, please post. There are many members here on this forum who do not have access to many of the newer or more sophisticated chips. I think it would be helpful to many. MP
  5. MP1

    pc monitor

    The manufacturer of your monitor is the only source that will have the program that goes in the eeprom that is in your monitor. They are not going to give you the source or the hex code to download into your own eeprom. You will have to purchase the already programmed eeprom from them. This is...
  6. MP1

    Mains OFF senseing

    If you are only looking for a momentary alarm so that someone knows when the power was lost immediately, the circuit could get power from a large capacitor. This would sound an alarm until the capacitor discharged. MP
  7. MP1

    Free sample chips!

    International shipments are tricky this way. If the sender is not careful of how to declare the item in the right category, then it will seem like it is worth more to the customs agent. They just look at the value and the classification number of the item on the invoice. This really makes a...
  8. MP1

    Led display Digital Voltmeter question

    Here is an application note regarding this device. I think it will answer some of your questions and help you solve some others such as the negative sign, etc. MP ICL7106-7107-an023.pdf
  9. MP1

    Led display Digital Voltmeter question

    Let us know how much inaccuracy you are seeing. Please give some examples of different voltages measured. MP
  10. MP1

    Just got new chip..

    No. I was told they do not give them away as samples. They were actually very rude in their response. I even used my business email for the request. Thanks anyways. MP
  11. MP1

    basics of electrical supply

    Prateeksikka, with a constant voltage source, resistance is what determines the amount of current in any circuit (V/R=I), including the body. Current is the same through a series circuit. Thus no matter which item, body or circuit, the total resistance of the circuit will determine the current. MP
  12. MP1

    basics of electrical supply

    It is all dependent upon the current that runs through you to ground, not the voltage or frequency. I have a board that uses about 1,000 volts DC. Zaps you pretty hard, but causes no damage. (...it certainly wakes you up). MP
  13. MP1

    Trying to understand

    Yes, it is certainly not an OR gate or an AND gate, but I suppose that in the most simple application, you could replace the switches with digital 0 or 5V and have a simple gate. Digital gates actually have more function whereas they can buffer and improve your signal. I did not check the link...
  14. MP1

    basics of electrical supply

    Shekhar, In most geographical regions, code requires the Neutral to be connected to ground in your service breaker box. If you have the opportunity to look inside, you will see that they are all connected by a buss bar and all of the grounds are connected to the same place. The wires in a...
  15. MP1

    Trying to understand

    In the first example, you can close either switch and the other side of the circuit will continue to give you a voltage to the output. Only when both switches are closed will you get a change in state of the output. In other words, when S1 "AND" S2 are closed, the circuit will change state. This...
  16. MP1

    site is useless

    you have only found two weeks of steaming debates? .... you should go back into the archives.  ;D MP
  17. MP1

    0-5V Analog Output from my PC

  18. MP1

    LM317 works Bad "SOS"

    Like I said: Change R1 to a lower value. You might also want to change the pot to a different value so that it is more useful, but it will get you by if you want to leave it there. It will just not be making adjustments near the center of it's rotation. If this does not work, you probably do...
  19. MP1

    LM317 works Bad "SOS"

    Steve, Change the value of R1 to a lower value and try again. MP
  20. MP1

    0-5V Analog Output from my PC

    Staigen, I missed the word variable in his post. It is still feasible. Before I posted, he was getting discouraging posts telling him that this could not be done. R2R is not variable either. R2R will only give multiple choices. You should post a drawing of an R2R supply so that Stephen has this...
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