Tiny & Efficient Boost Converter Generates 5V at 3A from 3.3V Bus - DN280 Design Notes__ Linear Technology/Analog Devices
Tiny Buck Regulator Accepts Inputs from 3.6V to 25V & Eliminates Heat Sink - DN268 Design Notes__ Linear Technology/Analog Devices
Tiny Highly Flexible Dual Boost/Inverter Tracks Supplies - DN357 Design Notes__ Linear Technology/Analog Devices
Tiny Regulators Drive White LED Backlights - Design Notes 231__ Linear Technology/Analog Devices
Tiny Versatile Buck Regulators Operate from 3.6V to 36V Input - DN367 Design Notes__ Linear Technology/Analog Devices
TL431 shunt regulator limits high AC input voltage - 10/25/07 EDN Design Ideas: This circuit clamps input-ac voltages to levels safe for the operation of the power MOSFET in an SMPS Design by Todor Arsenov, STMicroelectronics, Prague, Czech Republic
Touch Switch 240VAC - This is another capacitance based touch on/touch off switch, which can control power to a 200 watt 240vac load . . . Hobby Circuit designed by Dave Johnson P.E.-February, 2002
Transformerless Power Supply - I have received a few emails asking for a transformerless power supply. Here is such a supply. This supply uses no heavy step down transformer and has an extremely low parts count. The circuit can be built very small and can supply small currents for small projects. The major downfall of this supply is that it is not isolated from the AC line and can only supply small currents __ Designed by Aaron Cake
Transformerless Power Supply (jose pino) - Simple, low cost and easy to build power supply. ideal for applications that doesn't require too much power. (5/28/2006) __ Designed by Jose Pino
Transistor quickly wakes sleeping LDO - 09/01/98 EDN Design Ideas: NOTE: FILE
has many circuits, scroll down. Portable systems, such as telephone handsets, make extensive use of low-dropout (LDO) regulators. These components provide noise-sensitive parts with a stable power-supply line. When a telephone enters standby mode, most of the circuits go to sleep by disabling the LDO's outputs. Operating current thus drops to a minimal level. When a user starts to dial a number, the LDO receives an enable signal and immediately delivers the nominal operating voltage. Unfortunately, most low-noise LDOs use a bypass capacitor that briefly loads the internal reference voltage upon wake-up. Design by Christophe Basso, Motorola Semiconductor, Toulouse, France
Triggered spark gap - This is purely a construction article. __
Twin T power oscillators work as DC-biased AC sources - 9-Apr-09 EDN Design Ideas: Using a frequency-selective twin-T network and the LT3080 linear regulator, you can achieve a low-distortion twin-T oscillator with power-driving capability Design by Tiger Zhou and Robert Dobkin, Linear Technology, Milpitas, CA
Two AA cells power step-down regulator - 01/07/99 EDN Design Ideas: (Scroll to find this one) DC/DC conversion is particularly challenging when both the input and output voltages are low. Step-up ICs that operate with inputs lower than 1V are available, but step-down ICs that accept input voltages Page includes several designs. Design by Len Sherman, Maxim Integrated Products, Sunnyvale, CA
Two Channel Gate Driver for Large IGBT Modules - The BG2A is a fully isolated two channel gate drive Circuit designed for use with dual iGBT modules. The BG2A utilizes Powerex VLA500-01 or VLA502-01 hybrid gate drivers to provide efficient switching of modules rated up to 1400A. The hybrid gate driver features a built-in high speed opto-coupler,
short circuit protection and an isolated DC to DC converter with
2500VRMS isolation.
Two Phases to Cut Current & Improve EMI - 11/12/09 EDN Design Ideas: in DC/DC-converter applications in which the input voltage may be lower or higher than the output voltage, you can use either a flyback converter or a SEPIC (single-ended-primary-inductor converter). SEPIC
offer lower input-curre Design by Goran Perica, Linear Technology App Note, Milpitas, CA
Two Terminal Current Regulator (LT1635) - The LT1635 combines an op amp with a 200mV reference. Scaling this reference voltage to a potential across resistor R3 forces a controlled amount of current to flow from the +terminal to the –terminal. Power is taken from the loop. __ Linear Technology/Analog Devices App Note, Mar 31, 2010
Two Terminal Current Source - The OpAmp buffers the upper potential of a shunt regulator to set a voltage drop on R1 equal to the reference. The net current to RL is the programmed R1 current plus the quiescent supply current of the OpAmp passing through the reference. __ Linear Technology/Analog Devices App Note, Jun 21st 2011
Two transistor regulators - a theoretical discussion __ Designed by Richard Torrens
Two watt switching power supply - in this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the transistor switches off. The output voltage is dependent on the load resistance and is limited by a zener diode that stops the oscillator when the voltage reaches about 14 volts. Higher or lower voltages can be obtained by adjusting the voltage divider that feeds the zener diode. The efficiency is about 80% using a high Q inductor. __ Designed by Bill Bowden
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