Layout Guidelines for Switching Power Supplies:  National Semiconductor Application Note 24 May2001 (app note added 7/02)

LH1605 Switching Regulator:  National Semiconductor Application Note 04 Nov1995 (app note added 7/02)

Linear supply uses Switch mode regulation:  07/19/01 EDN Design Ideas  /  (added 1/05)  You can use simple circuits to implement small, regulated plug-in power supplies. In Figure 1 , a basic and versatile 5V supply uses a zener diode and an emitter-follower transistor. You must calculate and design the transformer such that Q 1 is close to saturation at low mains voltages and nominal

LM2651_3.3V_EVAL 1.5High Efficiency Synchronous Switching Regulator Evaluation Board:  National Semiconductor Application Note 14 Sep1999 (app note added 7/02)

LM78S40 Switching Voltage Regulator Applications:  National Semiconductor Application Note 02 Mar1999 (app note added 7/02)

LND1 Series: Efficient Switchmode Power Supply Start-Up:  Supertex Semiconductors  (app note added 2/06)

Method provides self timing for synchronous rectifiers:  05/16/02 EDN Design Ideas  /  (added 1/05)  Synchronous rectifiers are MOSFETs, driven in such a way as to perform a rectifying function. They often take the place of diodes in the output-rectification stage of switching power converters, because of their lower on-state power loss. In power circuits, synchronous rectifiers are often complicated to use because of timing issues....

Optimizing the Ultra-Fast POWERplanar Rectifier Diode for Switching Power Supplies:  National Semiconductor - Application Note   (app note added 2/06)

Reduce Emi by Sweeping a Power Supply's Frequency:  05/27/04 EDN Design Ideas  /  (added 2/05)  Switching power supplies can be notorious noise generators. You should prevent this noise, which is conducted, Radiated, or both, from returning to the input source, where it can potentially wreak havoc on other devices operating from the same input power....

Self Switching Power Supply:  One of the main features of the regulated power supply circuit being presented is that though fixed-voltage regulator LM7805 is used in the circuit, its output voltage is variable. This is achieved by connecting a potentiometer between common terminal of regulator IC and ground. For every 100-ohm increment in the in-circuit value of the resistance of potentiometer VR1, the output voltage increases by 1 volt. Thus, the output varies from 3.7V to 8.7V (taking into account 1.3-volt drop across diodes D1 and D2).  Another important feature of the supply is that it switches itself off when no load is connected across its output terminals. This is achieved with the help of transistors T1 and T2, diodes D1 and D2, and capacitor C2. When a load is connected at the output, potential ....   (added 6/06)