IC Maintains Uniform Bias for GaAs Mesfets:  08/22/02 EDN Design Ideas  /  (added 1/05)  The gate-turn-on threshold voltage for GaAs MESFETs (gallium-arsenide metal-semiconductor field-effect transistors) varies considerably from part to part, even within a given lot. That behavior makes biasing difficult, especially if you want to design the device into a high-volume product. To overcome this drawback, you can introduce a current sensor that monitors the bias current and provides ......

IGBT Technical Overview:  Application Note Microsemi formerly Advanced Power APT0408 (added 2/07)

Improve FET Based Gain Control:  12/06/01 EDN Design Ideas  /  (added 1/05)  One problemwith standard FET gain-control circuits is increased noise when you use the FET as a part of a resistive attenuator in series with an op amp. This configuration attenuates the signal before amplification; hence, it requires much higher gain bandwidth and better noise performance from the op amp. ...

Improved Power MOSFETS Boost Efficiency IN A 3.5kw Single Phase PFC:  Application Note Microsemi-formerly Advanced Power Technology APT0101  ( app note added 2/07)

Improved Vbe Doubler:  Unpublished Circuit is a compensated Vbe doubler which operates over a wide current range. (added 02/05)

Inrush Limiter also Provides Short Circuit Protection:  06/09/05 EDN Design Ideas  / (added 11/05)  MOSFET keeps inrush currents due to capacitive loads under control.

Introduction to Power MOSFETs and Their Applications:  National Semiconductor Application Note   (app note added 2/06)

Isolated MOSFET  Driver has Wide Duty Cycle Range:  04/29/04 EDN Design Ideas  /  (added 03/05)  The main application for the circuit in Figure 1 is for driving power MOSFETs with signals ranging in frequency from 1 Hz to 300 kHz and with duty cycles from 0 to 100%. You achieve this goal by using a coreless pc-board transformer. The switching frequency in most power-electronics circuits ranges from a few hertz to a few hundred kilohertz....

Isolated-FET pulse driver reduces size, power consumption:  3/30/2006    EDN Design Ideas  / (added 02/07) Drive a capacitive-input power device with any duty cycle at frequencies up to 200 kHz.

JFET Buffer:  (circuit added 10/06)

JFET cascode boosts current-source performance:  5/11/2006    EDN Design Ideas  / (added 02/07)    A constant-current source minimizes the reference circuit's sensitivity to supply-voltage fluctuations and extends the voltage reference's operating voltage beyond its 5.5V maximum rating.

JFET cascode boosts current-source performance:  5/25/06  EDN Design Ideas  /  (added 10/06)  Use a JFET's self-biasing characteristics to build a dc/dc converter that operates from power sources, such as solar cells, thermopiles, and single-stage fuel cells.

JFETs Offer Lc Oscillators with Few Components:  02/05/2004  EDN-Design Ideas  In low-noise analog circuits, a high-gain amplifier serves at the input to increase the SNR. The input signal level determines the input-stage gain; low-level signals require the highest gain. It is also standard practice in low-noise analog-signal processing to make the circuit's bandwidth as narrow as possible to pass only the useful input-signal spectrum. (added 10/05)

Keys to Longer Life for CMOS:  AN-349 Analog Devices Application Note   (app note added 2/06)   Here's How CMOS Can be Protected Against Abuse

Latch-Up Protection for MOSFET  Drivers:  Microchip Application Note Published 5-Feb-03   (app note added 2/06)

Latest Technology PT IGBTs vs. Power MOSFETs:  Application Note Microsemi-formerly Advanced Power Technology APT0302  ( app note added 2/07)

Low Cost MOSFET  Quashes Power Resistor:  06/09/94 EDN-Design Ideas / (added 3/03) At power-on, off-line power supplies use a resistor to provide start-up current for the PWM IC, current that is necessary to start driving the power switch. After a few periods, an auxiliary winding delivers a sufficient voltage to power the IC. Unfortunately, the start-up resistor dissipates heat and .....

Low-Threshold MOSFETs:  Supertex Semiconductors  (app note added 2/06)

LT1462/LT1463/LT1464/LT1465: Micropower Dual and Quad JFET Op Amps Feature pA Input Bias Currents and C-LoadTM Drive Capability:  DN136  Design Notes (Linear Technology) (app note added 6/06)