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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.

• Charge Coupled MOSFET Relay
  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.

• 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.

• 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.

Basic EPAD MOSFET  Connection with Current Source Drive:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Basic MOSFET  /EPAD MOSFET  Diode-Connected Circuit :  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Basic MOSFET / EPAD MOSFET  Inverter Circuit:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Basics of El Panel Drive Techniques:  Supertex Semiconductors  (app note added 2/06)

Bit Reverser Scrambles Data for Fft:  03/02/95 EDN-Design Ideas / (added 2/06)

Capabilities Of Low-Cost High Voltage RF Power MOSFET s At Hf and Vhf:  Application Note Advanved Power Technology APTB981  (app note added 6/06)

Cascode MOSFET  Increases Boost Regulator's Input and Output Voltage Ranges:  09/1/05   EDN -Design Ideas  /   (added 11/05)   Simple enhancement extends range of both sides of regulator.

Circuit Detects Current Pulses:  01/06/94 EDN-Design Ideas / (added 3/03)  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.

Circuit Improves on Bias for GaAs FETs:  12/06/01 EDN Design Ideas  /  (added 1/05)  It's important to properly sequence the bias applied to an RF/microwave GaAs FET or a MMIC (monolithic-microwave-IC) amplifier. These devices are extremely sensitive to drain and gate voltage levels as well as to the order in which these biases turn on and off. A GaAs-FET amplifier that uses two bias voltages-a negative supply, VGG, on its gate and a positive supply, VDD, on its dra... ...

Circuit Provides Constant Current for Isfets/Memfets:  10/26/00 EDN-Design Ideas / (added 6/06) /

Circuit Reduces Negative Voltage Stresses on Control Ic:  04/18/02 EDN Design Ideas  /  (added 1/05)  In a synchronous, buck switching power supply, the two FETS and the output inductor meet at the phase node (Figure 1). The phase node often connects directly to the control IC. The voltage on this node swings from the input voltage to some voltage lower than ground. If the voltage goes too far below ground, the ESD structures or other circuitry within the control IC can become forward-bia... ...

Considerations for Driving Power MOSFET s in High-Current, Switch Mode Regulators:  Microchip Application Note Published 12-Nov-02   (app note added 2/06)

Converting GaAs FET Models for Diffrent Nonlinear Simulators (10/26/97) :  Application Note California Eastern Laboratories Doc #905  (app note added 6/06)

Designing High Power GaAs FET Amplifies Using Single Cell FET Parameters (1/17/98) :  Application Note California Eastern Laboratories Doc #912  (app note added 6/06)

Determining MOSFET  Driver Needs for Motor Drive Applications:  Microchip Application Note Published 31-Dec-03   (app note added 2/06)

Differential EPAD MOSFET  Matched-Pair Circuit with Buffered and Summed Outputs:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Differential EPAD MOSFET  Matched-Pair Circuit with Summing Output:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Diode-Connected EPAD MOSFET  with Buffer Amplifier Output:  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Driving a N Channel FET from TTL:  Meant as a quick n easy example of how to switch high current12V dc from TTL.   (added 4/02)