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Electronics Schematics - M

MOSFET Circuits

Low Cost MOSFET Quashes Power Resistor: 06/09/94 EDN-Design Ideas.

MOSFET Beats Murphy's Law: 12/22/94 EDN-Design Ideas.

MOSFET Circuit UPS Regulator's Output Current: 02/01/96 EDN-Design Ideas / Use a current mirror and a power MOSFET to increase the output-current capability of an IC-voltage regulator.

MOSFET Current Sensing: Method of mirror current sensing a MOSFET.

MOSFET Power Amp: DIY high power MOSFET amplifier200 Wrms 8 ohms -350 Wrms4 ohms.

MOSFET Power Amplifiers: A discussion of the benefits of the lateral MOSFET output devices used in today’s High Power audio amplifiers.

MOSFET PowerAmp: DIY high power MOSFET amplifier200 Wrms 8 ohms -350 Wrms4 ohms.

MOSFET Replaces Switch #1: 01/20/94 EDN-Design Ideas /  By using a cheap, readily available MOSFET, you can use a single-pole switch to turn a bipolar power supply on and off without consuming extra power. In Fig1, the switch simply controls the MOSFET gate, which switches on the negative supply. Resistor R, which can be several megohms, is not necessary if the ±6V rails are permanently connected to a load, such as an op-amp circuit. Because the MOSFETs RDS (ON) is a fraction of an ohm, power loss is minimal, and the circuit suits moderate-consumption, battery-operated circuitry.

MOSFET Replaces Switch #2: 02/03/94 EDN-Design Ideas / You can use a single-pole switch to turn a bipolar power supply on and off without consuming extra power.

MOSFET serves as ultrafast plate driver: 10/03/2002  EDN - Design Ideas / The circuit in Figure 1 provides a 20-MHz square wave across a set of highly capacitive ion-deflection plates in an experimental instrument. To get the required deflection, the plate voltage must be 20 to 30V, much higher voltage than conventional logic or driver families can provide. To minimize artifacts, the rise and fall times must be very fast, with a minimum of overshoot and ringing.

MOSFET switch provides efficient AC / DC conversion: 02/17/00 EDN-Design Ideas /

MOSFET tester

MOSFETs reduce crosstalk effects on analog switches: 05/29/03  EDN-Design Ideas / Some cost-effective analog multiplexer/demultiplexer ICs, such as the CD4053 and CD4066, find frequent use as signal distributors. These digitally controlled analog switches have low on-resistance. However, with all channels in the same package, crosstalk can be annoying and unavoidable. Figure 1 provides a cost-effective and viable method of solving this problem.

Simple 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.

Simple Isolated Supply Design Suits Fixed DC Voltage Systems : 12/23/02 Electronic Design - Ideas for Design / Most high-voltage systems that include low-voltage ICs must inject isolated supplies into their setups.


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