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Recent content by sound_man

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    gas ion selstive sensors - pre amplifier design

    gas ion selstive sensors Hi all, I need to design a pre-amplifier for a CO2 sensor. Does anyone know a good place to find out some background information on this type of sensor? The datasheet I have is not very helpful! Rgds
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    HFSS Simulation of an Antenna in Lossy Medium

    We have used HFSS to model antenna's within the body. WillEd's method is the way we have used when designing antennas for use on implants. We found keeping the structure simple shortens the simulation time without degrading the results. However we also found with "body tissue" dielectrics with...
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    VCO design - oscillator choice

    Hi I need to design a very small vco with a nominal centre freq of 2.45GHz. What I'm a little unsure about is which oscillator topology would be best to use. Does any I have any recomendations baring in mind size is important here. rgds
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    Creating ABM models of comparitor with hysterisis in PSPICE

    abm models for ads How do I create a analogue behavioural model of a comparitor with hysterisis in PSPICE. I need upper and lower thresholds of 1.25 and 3V. Thks
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    the use of a bjt ,whose B&E connect together?

    simply the bjt is wired as a diode between collector and the base/emitter
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    nmos bridge rectifier with MOS transistors

    mos rectifiers hi I'm designing an nmos bridge rectifier that will rectifiy a a discontinuous pulsed waveform. I'm a bit new to MOS design and am not sure where to connect the bulk terminals so they don't go positve wrt the source. Could connect to the source I guess but is there a better...

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