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  1. Radio Push-Button Micropower Circuit Using CD4049 Inverter crutschow
    A simple circuit using the common CD4049 to generate the Radio PB Function
  2. Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value crutschow
    Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
  3. Power Saving DC Solenoid Driver Provides Initial Full Power Actuation Followed By PWM Hold crutschow
    Circuit applies full actuation power to solenoid with PWM hold reducing power to 12-25% of nominal
  4. Binary ↔ BCD Conversion Using Counters crutschow
    Combination of Binary & BCD counters do Binary↔BCD conversions.
  5. Push-Button Relay Latch Circuit With Simple Debounce crutschow
    PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
  6. Resonant Inductive Charging of Capacitor Improves Efficiency And Amount of Stored Energy crutschow
    Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
  7. Analog Max/Min Value or Bi-Level Clamp Circuits crutschow
    Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
  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. 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
  3. 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
  4. crutschow

    Binary ↔ BCD Conversion Using Counters

    Combination of Binary & BCD counters do Binary↔BCD conversions.
    0/5, 0 votes
    Updated:
    Feb 23, 2018
  5. 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
  6. 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
  7. 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
  8. 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
  9. andrewblog

    Momentary latching relay

    Just for fun I designed and built this simple circuit which drives a monostable relay by a singol m
    0/5, 0 votes
    Updated:
    Mar 18, 2017
  10. crutschow

    Low Power CMOS PWM Circuit With Buffer Output Requires Only 5 Components

    CD4106 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
    0/5, 0 votes
    Updated:
    Feb 9, 2017
  11. crutschow

    Single Supply Non-Inverting Av=1 Op Amp Circuit With Simple Offset Voltage Calculation

    Circuit generates Av=+1 with simple offset calculation using std. resistor values
    0/5, 0 votes
    Updated:
    Feb 8, 2017
  12. crutschow

    Simple PWM Circuit For Lamp Dimming, etc., Improves On 555 PWM Circuits

    PWM circuit has voltage control of 0% to 100% duty-cycle
    0/5, 0 votes
    Updated:
    Jan 30, 2017
  13. crutschow

    Isolated Input, MOSFET AC/DC Solid State Relay (SSR)

    Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
    0/5, 0 votes
    Updated:
    Jan 3, 2017
  14. Mikebits
    0/5, 0 votes
    Updated:
    Jan 1, 2017
  15. crutschow

    Bipolar AC/DC MOSFET Low-Side Switch

    AC/DC Low-Side Switch With Low ON Resistance Uses Two N-MOSFETs and One NPN Transistor
    0/5, 0 votes
    Updated:
    Nov 7, 2016
  16. spec

    Core Components

    Which components do you need to get started in electronics?
    0/5, 0 votes
    Updated:
    Nov 1, 2016
  17. spec

    Restore Your Valuable Documents- or Make Your Own Book

    Document repair and book binding arn't that difficult
    0/5, 0 votes
    Updated:
    May 13, 2016
  18. spec

    Both Sexes for the Price of One: PMCPB5530 complementary MOSFETs

    Low gate threshold independent n type and p type MOSFETS in a low cost minature pakage
    0/5, 0 votes
    Updated:
    Mar 31, 2016
  19. spec

    Game Changer Opamp: OPAx192 and Relations

    This new opamp form TI comes close to the ideal and opens up a wealth of design avenues
    0/5, 0 votes
    Updated:
    Feb 25, 2016
  20. crutschow

    Push Button On/Off, Low Quiescent Power, High-Side MOSFET Power Switch

    Simple high-side switch requires only two active devices and a few passive parts
    0/5, 0 votes
    Updated:
    Oct 18, 2015
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