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  1. I

    Common anode or common cathode display?

    Thank you
  2. I

    Common anode or common cathode display?

    Thank you all for the help, the middle pin on both sides are ground, but does that mean it's a CA or is i a CC? I think it might mean it's CC, but please tell me if it is the other way around. again, Thank you all for the help
  3. I

    Common anode or common cathode display?

    Here is a clearer picture of the part number
  4. I

    Common anode or common cathode display?

    Thanks again!
  5. I

    Common anode or common cathode display?

    Hello, I am on Module 3 of my electronics 11 course, and I am on section 12: Running a 7-segment Display, lesson 39: Introducing the 7-segment Display, pages 147 and 148 in my “Electronic Circuits for the Evil Genius” guidebook . I am trying to map out the pins, but I can't tell what 7-segment...
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    Nand Gate oscillator help

    I checked the diode and the reading I got was .583! does that mean it is damaged? I also checked the 4011 and these are the readings I got Do these readings mean they are busted? Also, what does ESD and U1 mean?
  7. I

    Nand Gate oscillator help

    The "Electronic Circuits for the Evil Genius" book said that the touch switch replacing R2 would make RC1 time off manually. I had the same set up on my bread board and it worked.
  8. I

    Nand Gate oscillator help

    The only modification I made was the touch switches. It worked perfectly on the breadboard, but I started to have the problem after I soldered the parts into the PBC. My electronics teacher just replied to my question saying that the IC, D1, and/or transistor could have been damaged by the heat...
  9. I

    Nand Gate oscillator help

    C1 is a 1μF, D1 is a signal diode (skinny gold) and here is my schematic
  10. I

    Nand Gate oscillator help

    Here are the top and bottom schematics
  11. I

    Nand Gate oscillator help

    Hello again I had just built a circuit and I am having a very difficult time trying to ID the current problem with it. It is suppose to turn on with the touch switch and get turned off by the other touch switch. Instead, it turns on when I touch the first switch, and then turns of immediately...
  12. I

    Nand Gate oscillator help

    Thank you so much... again! This was really helpful
  13. I

    Nand Gate oscillator help

    so is this right?
  14. I

    Nand Gate oscillator help

    + should be connected to leg E and - is connected to.... leg C?.... leg B? I know leg B is connected to pin 10, but the black wire was connected to pin 10 before the PNP... uh... I don't know, the schematic looks like C is connected to Ground? Should the black wire connect to leg C, and do I...
  15. I

    Nand Gate oscillator help

    Hello again. I got such awesome help last time..... so I'm back again! I am having another problem with my circuit. I am on lesson 29: Using Transistors to Amplify the Output of the "Electronic Circuits for the Evil Genius book", and like the title said, I have to use a PNP transistor to...
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    Nand Gate oscillator help

    Thanks soooo much!!! it works now!! I've been stuck on this for almost 2 weeks. I can't believe I couldn't find out what the problem was.....it was easy once you explained it...it makes so much more sense now :) Your awesome! Thanks to everyone for helping me with this, I really appreciate it...
  17. I

    Nand Gate oscillator help

    If R3 and R4 don't connect between Pins 1 and 3, then how do they connect? In the schematic, it looked like the resistors are between pins 1 and 3 . I uploaded the the schematic I'm working from. If the capacitor doesn't directly connect to the IC, then do I use just use extra wires? I' m...
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    Nand Gate oscillator help

    I can confirm that the NAND gate series is 4011 I am looking at the C2 and I think that I have it in correctly, but I am not 100% sure that it is.
  19. I

    Nand Gate oscillator help

    8 sec timer works, it goes off after 8sec. the value of the components R3- 470 kΩ (my DMM .458 mΩ) R4- 2.2 mΩ (my DMM 2.15 mΩ) C2- 0.1μf (my DMM 0.1μf) The values in the brackets are what my DMM read, but the workbook says that the resistors I'm using have an acceptable error range of...
  20. I

    Nand Gate oscillator help

    Thanks for the advice, I had been trying to work with the schematic, and I tried some of the trouble shooting but I still can't find the exact problem? If the problem is that the Hz is more than ~25Hz, how does that happen and how do I fix it? Here is a picture of my setup, I followed the...
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