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Top resources

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Analog Max/Min Value or Bi-Level Clamp Circuits 2017-05-01
Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
5.00 star(s) 1 ratings
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NiZn Battery Charger With Auto Cutoff Using LM317
Charger performs recommended charging function for rechargeable NiZn batteries
0.00 star(s) 0 ratings
Updated
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LM317 12V Lead-Acid Battery Charger With 3-Step Auto CC/CV and Trickle-Charge
Lead-acid battery charger using LM317 provides auto CC charge, CV top-off, and final trickle-charge
0.00 star(s) 0 ratings
Updated
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Simple Push-Button Power On/Off Circuit With Delay
PB latch circuit provides on/off delay function to prevent accidental power switching
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PWM Input Constant-Current Circuit With 3-Pole Active Filter
Circuit combines PWM controlled constant-current source with 3rd-order filter using one opamp
0.00 star(s) 0 ratings
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Low Power PWM Stepper Motor Driver 2018-08-05
Stepper motor driver applies full voltage for fast stepping, then PWM for low power hold
0.00 star(s) 0 ratings
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Electronic Power Rheostat 2018-07-23
Circuit generates an equivalent high power resistance that can be adjusted with a potentiometer.
0.00 star(s) 0 ratings
Updated
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Radio Push-Button Micropower Circuit Using CD4049 Inverter 2018-07-18
A simple circuit using the common CD4049 to generate the Radio PB Function
0.00 star(s) 0 ratings
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Notch Filter Allows Single Pot Adjustment of Notch Frequency With Little Change In Its High Q Value 2018-06-01
Notch filter Q is largely independent of component tolerances and notch frequency adjustment.
0.00 star(s) 0 ratings
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Power Saving DC Solenoid Driver Provides Initial Full Power Actuation Followed By PWM Hold 2018-03-31
Circuit applies full actuation power to solenoid with PWM hold reducing power to 12-25% of nominal
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Binary ↔ BCD Conversion Using Counters 2018-02-23
Combination of Binary & BCD counters do Binary↔BCD conversions.
0.00 star(s) 0 ratings
Updated
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Push-Button Relay Latch Circuit With Simple Debounce 2017-06-20
PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
0.00 star(s) 0 ratings
Updated
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Resonant Inductive Charging of Capacitor Improves Efficiency And Amount of Stored Energy 2017-05-30
Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
0.00 star(s) 0 ratings
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Missing Pulse Detector Circuits Using LM339/393 Comparator or CD4049 Gate 2017-04-15
Watchdog timer circuits, alternate to 555 designs, will timeout on either high or low hang
0.00 star(s) 0 ratings
Updated
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Low Power CMOS PWM Circuit With Buffer Output Requires Only 5 Components 2017-02-09
CD4106 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
0.00 star(s) 0 ratings
Updated
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Single Supply Non-Inverting Av=1 Op Amp Circuit With Simple Offset Voltage Calculation 2017-02-08
Circuit generates Av=+1 with simple offset calculation using std. resistor values
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Simple PWM Circuit For Lamp Dimming, etc., Improves On 555 PWM Circuits 2017-01-29
PWM circuit has voltage control of 0% to 100% duty-cycle
0.00 star(s) 0 ratings
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Isolated Input, MOSFET AC/DC Solid State Relay (SSR) 2017-01-03
Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
0.00 star(s) 0 ratings
Updated
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Component Salvaging Using Rework Stations 2016-12-31
Rework Station, Component Salvage
0.00 star(s) 0 ratings
Updated
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Bipolar AC/DC MOSFET Low-Side Switch 2016-11-07
AC/DC Low-Side Switch With Low ON Resistance Uses Two N-MOSFETs and One NPN Transistor
0.00 star(s) 0 ratings
Updated

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