Digital Circuit Design

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Digital circuit and logic questions (ie. Logic, Gates, I2C, USB, 555 Timer, etc.)

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Page 1 of 55
  1. iONic

    Long Delays with the 555 Timer or alternate IC

    iONic, Jan 19, 2019 at 7:05 PM
    Last message by crutschow Jan 21, 2019 at 2:32 AM
    Replies:
    32
    Views:
    411
  2. patrickstefanski

    Logic-Level MOSFET (5v Gate); drive from 3.3v MC with level shifter? BJT? separate driver chip.

    patrickstefanski, Jan 19, 2019 at 5:02 PM
    Last message by danadak Jan 19, 2019 at 8:49 PM
    Replies:
    3
    Views:
    66
  3. fouad belkhadem

    need help routing pcb

    fouad belkhadem, Jan 19, 2019 at 9:09 AM
    Last message by fouad belkhadem Jan 19, 2019 at 6:32 PM
    Replies:
    6
    Views:
    139
  4. arvinfx

    0-100% duty cycle with 555

    arvinfx, Jan 15, 2019 at 5:01 AM
    Last message by Bordodynov Jan 19, 2019 at 2:57 AM
    Replies:
    18
    Views:
    270
  5. MAStewart

    Oktimer present time reset

    MAStewart, Jan 16, 2019 at 10:56 PM
    Last message by MAStewart Jan 17, 2019 at 12:38 AM
    Replies:
    4
    Views:
    120
  6. Electronic_Maniac

    Difference between input current and supply current

    Electronic_Maniac, Jan 15, 2019 at 8:00 AM
    Last message by WBahn Jan 16, 2019 at 12:29 AM
    Replies:
    13
    Views:
    197
  7. asprinwizard

    Momentary pulse for constant voltage change

    asprinwizard, Jan 9, 2019
    Last message by crutschow Jan 15, 2019 at 8:58 PM
    Replies:
    44
    Views:
    602
  8. topbobster

    Water tank automatic refilling

    topbobster, Jan 14, 2019
    Last message by oz93666 Jan 14, 2019
    Replies:
    20
    Views:
    273
  9. JulesP

    Astable 555 circuit with a period of up to 10mins

    JulesP, Dec 8, 2018
    Last message by Bernard Jan 14, 2019
    Replies:
    176
    Views:
    2,914
  10. Scott Johnson

    Learning how to calculate values for circuit components

    Scott Johnson, Jan 11, 2019
    Last message by DickCappels Jan 13, 2019
    Replies:
    24
    Views:
    360
  11. HonesTisThePathToLife

    EL wire controller high pitch squealing ? is this normal ?

    HonesTisThePathToLife, Dec 25, 2018
    Last message by Alec_t Jan 12, 2019
    Replies:
    11
    Views:
    318
  12. wdlyons_at_gmail_dot_com

    Build SPI Master using shift registers

    wdlyons_at_gmail_dot_com, Jan 10, 2019
    Last message by wdlyons_at_gmail_dot_com Jan 11, 2019
    Replies:
    3
    Views:
    124
  13. MechE74

    Driving IRL540 from CD4043B Latch

    MechE74, Jan 9, 2019
    Last message by Alec_t Jan 11, 2019
    Replies:
    9
    Views:
    207
  14. hansarne

    Time delay system with 0,1 seconds delay

    hansarne, Jan 10, 2019
    Last message by crutschow Jan 10, 2019
    Replies:
    13
    Views:
    239
  15. n4mwd

    Long chain of MAX7219 Matrix displays Fail

    n4mwd, Aug 31, 2018
    Last message by Korede Jan 10, 2019
    Replies:
    53
    Views:
    1,352
  16. saifudeen rizal

    Need to design a Digital potentiometer circuit that has a wiper resistance of 0-10 ohm

    saifudeen rizal, Jan 8, 2019
    Last message by Alec_t Jan 9, 2019
    Replies:
    10
    Views:
    256
  17. fmrPIC

    3.3v to 3.3v with no ring

    fmrPIC, Jan 7, 2019
    Last message by danadak Jan 8, 2019
    Replies:
    11
    Views:
    239
  18. Ryan$

    Digital Integrated Circuits

    Ryan$, Jan 7, 2019
    Last message by Norfindel Jan 8, 2019
    Replies:
    15
    Views:
    201
  19. Ryan$

    Fan in/Fan out

    Ryan$, Jan 8, 2019
    Last message by DickCappels Jan 8, 2019
    Replies:
    2
    Views:
    125
  20. Ryan$

    Voltages concurrent

    Ryan$, Jan 8, 2019
    Last message by MrChips Jan 8, 2019
    Replies:
    1
    Views:
    68
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