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Power Supplies:  Switch Mode  Page 5
Switchmode Power Supply:  #'s-A,     B-E,     F-R,     S,     T-V
Boost,   Buck,   Buck/Boost

Power Supplies -- Main Page           Converters -- Main Page
Last Updated on: Thursday, November 30, 2017 04:30 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Tapped inductor, boost regulator deliver high voltage -  20-Jul-06 Issue of EDN  Obtain 100V dc from a 3V source.... [Design Idea by David Ng and Adam Huff, Linear Technology Corp, Milpitas, CA; Edited by Brad Thompson and Fran Granville]
TB081: Soft-Start Controller for Switching Power Supplies -  Microchip Application Note Published 29-Nov-04  (app note added 2/06)
Telephone Ring Generator using Switching Power Supply -  The telephone ring generator shown below generates the needed high voltage from a simple switching mode power supply (SMPS) which employs a CMOS Schmitt Trigger square wave oscillator, 10 mH inductor, high voltage switching transistor (TIP47 or other high voltage, 1 amp transistor) and a driver transistor (2N3053). The inductor should have a low DC resistance of 1.5 ohms or less. The switching supply must have a load connected to prevent the voltage from rising too high, so a 22K resistor is.... [Bill Bowden's circuit

Two Cores Marry Make Swinging Choke -  05/11/95 EDN-Design Ideas....Designing an output choke for a switch-mode power supply that must operate over large load variations can be problematic. If you design the inductor for the maximum load the power converter will see, the inductance will be below the critical inductance required at light load.  This inadequate inductance will cause the voltage on the output capacitor to peak up, resulting in increased ripple on the output....[Design Ideaadded 2/06] EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
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Two Watt Switching Power Supply -  from 6V to14V (added 6/06)
UltraLow Noise Switching Power Supplies Simplify EMI Compliance -  DN316  Design Notes (Linear Technology) (app note added 1/06)
Use a 555 timer as a switch-mode power supply -  14-Nov-02 Issue of EDN  Most switch-mode power supplies rely on a PWM (pulse-width-modulated] output that is controlled via voltage feedback. A 555-timer IC can inexpensively perform PWM. The circuit in Figure 1 shows how to turn a 555 PWM circuit into an switch-mode power supply with only one simple equation. The design uses two 555s.... [Design Idea by Aaron Lager, Masterwork Electronics, Rohnert Park, CA]
Use a microcontroller to design a boost converter -  4-Mar-04 Issue of EDN  Boost converters, like other switchers, have traditionally received their control signals from a dedicated circuit. However, a recent trend is to integrate simple switching-power-supply building blocks into generic devices, such as microcontrollers. An excellent example of this concept is a microcontroller that combines digital and analog circuitry and makes it easier to build simple power supp.... [Design Idea by Ross Fosler, Microchip Technology, Chandler, AZ]
Various Switching Power supplies -  Page has several circuits, please scroll through all of them
Whistle on Whistle Off -  This CMOS toggle flip flop circuit has an addition of2bandpass filters and condenser microphone so the relay can be toggled by whistling at it…. [Bill Bowden's website]
Switchmode Power Supply:  #'s-A,     B-E,     F-R,     S,     T-V


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