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Cascode MOSFET increases boost regulator's input and output voltage ranges -
1-Sep-05 Issue of EDN Simple enhancement extends range of both sides of
regulator....[Design Idea by Scot Lester, Texas Instruments, Dallas, TX; Edited by
Brad Thompson and Fran Granville] |
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Charge Coupled Bi-Directional Power Mosfet Relay - The circuit uses an
inexpensive C-MOS inverter package and a few small capacitors to drive two power MOS
transistors from a 12v to 15v supply. Since the coupling capacitor values used to
drive the FETs are small, the leakage current from the power line into the control
circuit is a tiny 4uA. Only about 1.5mA of DC is needed to turn on and off 400 watts
of AC or DC power to a load. Published in Electronic Design, Nov. 8, 1990. ….
[Designed by David A. Johnson] |
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Charge Coupled MOSFET Relay #2 - This circuit acts as an AC/DC relay with a
rating up to 50 volts peak and up to 10 amps of current. The differential
oscillator supplies voltage to the gates of the two FETs with good isolation will
drawing only 1.5ma of current. …. [Designed by David A. Johnson] |
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Charge Pump Efficiently Divides Supply Voltage - This circuit uses a few
FETs and logic devices to down convert a DC voltage to about one half its value ….
[Designed by David A. Johnson] |
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Circuit Detects Current Pulses - 01/06/94 EDN-Design Ideas....The pulse
detector provides a visible indication of positive and negative current pulses. The
pulses amplitudes can vary from20 to150 mA. The pulses durations can range from10 to40
msec, and their repetition rate can span40 to180 pulses/minute....[Design Idea by
Richard McGillivray, Grey Bruce Regional Health Centre, Owen Sound, Ontario, Canada] |
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Circuit Protects from Battery Polarity Reversal - This simple circuit can
protect a sensitive electronic circuit from an accidental connection of a battery with
a reversed polarity. The N-channel FET connects the electronic device to the
battery only when the polarity is correct. The circuit shown was designed for a
device powered from a single 1.5 volts button cell battery. However, the circuit
will operate with higher voltages as well. …. [Designed by David A. Johnson] |
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Considerations for Driving Power MOSFETs in High-Current, Switch Mode Regulators -
Microchip Application Note Published 12-Nov-02 (app note added 2/06)
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Cutting-Edge Mount Down Methods Boost Power Semiconductor Performance -
Application Note Microsemi formerly Advanced Power APT9902 (added 05/06/07)
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Defining Diode Data Sheet Parameters - This application note will take the
reader on a tour of parameters used by Advanced Power Technology in their diode data
sheets. In most cases the intent will be to define and explain. In a few cases more
discussion will be provided to clarify the usage of data sheet information. The note
will be divided into sections corresponding to the sections of the data sheets.
Application Note Microsemi APT0301 (app note added 05/06/07) |
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Determining MOSFET Driver Needs for Motor Drive Applications - Microchip
Application Note Published 31-Dec-03 (app note added 2/06) |
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Differential EPAD MOSFET Matched-Pair Circuit with Buffered & Summed Outputs -
Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc....[App
Note] |
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Differential EPAD MOSFET Matched-Pair Circuit with Summing Output - Circuit
Ideas for Designers Application Notes Advanced Linear Devices, Inc....[App Note]
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Diode-Connected EPAD MOSFET with Buffer Amplifier Output - Circuit Ideas for
Designers Application Notes Advanced Linear Devices, Inc....[App Note] |
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Eliminating Parasitic Oscillation between Parallel MOSFETs - Application
Note Microsemi-formerly Advanced Power Technology APT0402 ( app note added
08/08/08) |
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FET Input High Speed Light Detector - This circuit is yet another design
that converts current from a PIN photo diode to a voltage. It has a bandwidth that
extends beyond 50MHz. …. [Designed by David A. Johnson] |
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Finger Touch Activated Switch - It does not get any easier if you want a
solid-state switch that is activated by the touch of a finger. Two small metal pins
route voltage through the finger skin to a MOSFET switch. The circuit is great for
situations where a membrane type mechanical switch is not desired. …. [Designed by
David A. Johnson] |
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FM Transmitter - A compact 2 transistor transmitter for use at VHF
frequencies…. [Andy Collison] |
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Gate Drive Design for Large Die MOSFETS - The successful design of robust
gate drive circuitry for high voltage, very high current MOSFET devices is no
different than designing driver circuitry for smaller devices and depends on an
understanding of the drive requirementsApplication Note Microsemi APT9302 ( app
note added 4/06) |
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H-BRIDGE Theory & Practice - A number of web sites talk about H-bridges,
they are a topic of great discussion in robotics clubs and they are the bane of many
robotics hobbyists. I periodically chime in on discussions about them, and while not
an expert by a long shot I've built a few over the years. Further, they were one of my
personal stumbling blocks when I was first getting into robotics....[Chuck McManis]
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High Current MOSFET Flip Flop with Debounced Pushbutton - This circuit
was adapted from the "Toggle Switch Debounced Pushbutton" by John Lundgren. It is
particularly useful in controlling a load from several locations where the load may be
switched on from one location and switched off from another. Any number of momentary
(N/O) switches or push buttons may be connected in parallel. The
circuit....(electronic schematic / circuit added 11/05) |
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High Voltage, High Efficiency MOSFET RF Amplifiers - Application Note
Microsemi-formerly Advanced Power Technology APT0001 ( app note added 08/08/08)
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High-impedance FET probe extends RF spectrum analyzer's usable range -
21-Jul-05 Issue of EDN Op amp and careful design/construction build high-impedance RF
probe....[Design Idea by Steve Hageman, Windsor, CA; Edited by Brad Thompson and Fran
Granville] |
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High-side driver feeds IGBTs and MOSFETs - 11/23/00 EDN-Design Ideas The
low- to moderate-power system in Figure 1 provides the interface between a pulse-width
modulator and a high-side IGBT (insulated-gatebipolar-transistor) or MOSFET switch.
You can use it to interface TTL or CMOS circuitry to an H-bridge....[Design idea by
Carlisle Dolland, Honeywell Engines and Systems, Torrance, CA] |
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High-Voltage MOSFET Behavior in Soft-Switching Converters: Analysis & Reliability
Improvements - The benefits of soft-switching converters, and in particular
zero-voltage switching (ZVS, also called zerovoltage-transition [ZVT] or
resonant-transition) circuits, are well-known. High-frequency converters powered from
high source voltage show significant improvements when operated with soft switching.
Application Note Microsemi APT9804_04 ( app note added 4/06) |
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HT04 Series - Supertex Semiconductors (app note added 2/06)
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