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Tapped inductor boost regulator deliver high voltage - 07/20/06 EDN-Design Ideas: Obtain 100V dc from a 3V source.....(design idea added 05/06/07)

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 .... (circuit / schematic design added 6/06)

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)

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 - 11/14/02 EDN-Design Ideas: 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 added 1/05)

Use a MicroController to Design a Boost Converter - 03/04/04 EDN-Design Ideas: 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.....  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 added 04/04)

Various Switching Power supplies - (electronic circuit added 4/05)