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Top Articles

  1. Basic 8051 tutorial 5 Ian Rogers
    Serial communication in ASM and C
  2. Getting Started with Android Programming: Creating Your First App DerStrom8
    A tutorial to help you write a simple Hello World! Android application
  3. Refrigerator Timer magvitron
    A timer for turning ON/OFF the refridgerator at peak load hours (6pm to 10 pm) using 8051
  4. I'm sick of counter requests.. So here's a few Ian Rogers
    counter
  5. LM317 Adjustable 20V, 1.5A Supply with Simple SMPS Tracking Preregulator crutschow
    LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
  6. Power Analysers: True RMS Readings Barry Atkins
    What is true RMS or why does that matter?
  7. Simple Interrupts on mid range PIC's.... Ian Rogers
    How to implement interrupts in your project.
  1. crutschow

    Radio Push-Button Micropower Circuit Using CD4049 Inverter

    A simple circuit using the common CD4049 to generate the Radio PB Function
    0/5, 0 votes
  2. unclejed613

    output impedance experiments

    Damping factor, and how an amplifier controls voice coil motion.
    0/5, 0 votes
    Updated:
    Jul 10, 2018
  3. crutschow

    Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value

    Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
    0/5, 0 votes
    Updated:
    Jun 1, 2018
  4. crutschow

    Battery - Accurate, Low-Voltage Cutoff To Prevent Complete Battery Discharge

    Circuit disconnects battery from operating accessories at a specific voltage to avoid dead battery.
    0/5, 0 votes
    Updated:
    May 30, 2018
  5. languer
    0/5, 0 votes
    Updated:
    May 12, 2018
  6. languer
    0/5, 0 votes
    Updated:
    May 12, 2018
  7. crutschow

    555 One-Shot Timer Has Zero Quiescent Power

    One-shot timer uses no power when quiescent, useful for battery powered circuits
    0/5, 0 votes
    Updated:
    Apr 18, 2018
  8. crutschow

    Lead-Acid Battery Charger, 12V 6A, Using Hysteretic SMPS Circuit With Auto Float Charge

    Simple, efficient, lead-acid battery charger auto switches from CC to CV mode
    0/5, 0 votes
    Updated:
    May 3, 2018
  9. crutschow

    Power Saving DC Solenoid Driver Provides Initial Full Power Actuation Followed By PWM Hold

    Circuit applies full actuation power to solenoid with PWM hold reducing power to 12-25% of nominal
    0/5, 0 votes
    Updated:
    Apr 1, 2018
  10. crutschow

    Low-Dropout CC/CV 12V Lead-Acid Battery Charger With Auto Trickle-Charge

    Minimal circuit for auto CC/CV charging. Option allows pot adjustment of charge current.
    0/5, 0 votes
    Updated:
    Mar 11, 2018
  11. crutschow

    Low Drop, High-Side Sense Current Limiter Adjusts to Zero

    Two simple high-side sense current limit circuits adjust to zero current and have low voltage drop
    0/5, 0 votes
    Updated:
    Mar 8, 2018
  12. crutschow

    Binary ↔ BCD Conversion Using Counters

    Combination of Binary & BCD counters do Binary↔BCD conversions.
    0/5, 0 votes
    Updated:
    Feb 23, 2018
  13. crutschow

    Simple 15V, 1.5A, CC/CV Bench Power Supply Circuit - (With Optional Laptop Charger Source)

    Inexpensive, single regulator IC power supply with I and V adj. to zero, includes I & T monitors
    0/5, 0 votes
    Updated:
    Feb 6, 2018
  14. crutschow

    Simple & Inexpensive Ideal-Diode MOSFET Circuit

    Good for low-drop diode applications, such as blocking battery back-charging or brownout protection
    4/5, 1 vote
    Updated:
    Sep 19, 2017
  15. Ian Rogers
    0/5, 0 votes
    Updated:
    Jul 30, 2017
  16. crutschow

    Push-Button Relay Latch Circuit With Simple Debounce

    PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
    0/5, 0 votes
    Updated:
    Jun 20, 2017
  17. crutschow

    LM317 CC/CV 12V Lead-Acid Battery Charger With Automatic Trickle Charge

    Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
    0/5, 0 votes
    Updated:
    Jun 18, 2017
  18. crutschow

    Resonant Inductive Charging of Capacitor Improves Efficiency And Amount of Stored Energy

    Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
    0/5, 0 votes
    Updated:
    May 30, 2017
  19. crutschow

    Analog Max/Min Value or Bi-Level Clamp Circuits

    Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
    0/5, 0 votes
    Updated:
    May 2, 2017
  20. crutschow

    Missing Pulse Detector Circuits Using LM339/393 Comparator or CD4049 Gate

    Watchdog timer circuits, alternate to 555 designs, will timeout on either high or low hang
    0/5, 0 votes
    Updated:
    Apr 15, 2017
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