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PB alternate action circuit uses CD4013 FF with simple debounce to control relay (or other load).
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Lead-acid battery charger starts with constant-current and ends with constant-voltage trickle charge
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Capacitor resonant charging can nearly double the charge efficiency and quadruple energy stored.
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Circuit outputs the min. or max. value of several analog inputs, or provides accurate bi-level clamp
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Watchdog timer circuits, will timeout on either high or low hang
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Just for fun I designed and built this simple circuit which drives a monostable relay by a singol m
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Single +output plus dual +/- tracking output supply using common 3-terminal regulators goes to 0V.
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MOSFET bridge for efficient resistive load rectification, or indifference to input power polarity.
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PWM allows easy control of linear regulator output voltage for μP based power supplies
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CD4106 PWM circuit uses only 2 diodes, 1 capacitor, and 1 potentiometer
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Circuit generates Av=+1 with simple offset calculation using std. resistor values
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PWM circuit has voltage control of 0% to 100% duty-cycle
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Constant-current hysteretic buck regulator supply for high power LEDs, efficiency of 90%
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MOSFET Bridge Rectifier gives high efficiency for low voltage, high current AC-DC supplies
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Linear power supply core theory plus circuits that can be adapted to suit your application
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Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
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How to select power devices and specify heatsinking
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Rework Station, Component Salvage
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Design and build practical electromagnets using simplified theory and formulae
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