Electronics Forum / Design / April 2006

Jim,
I was perusing your website and happened upon your patent regarding
demodulating of FSK. Is this the currently easiest/best way to decode FSK?
Or would I be better off doing with SW and microcontroller?

I wonder if I wanna design a function generator of 100hz to 10Mhz with
1khz resolution,how to select DAC.
How about 10 bit DAC.
Another question, I noticed that Max038 can be used as FSK Generator in

The FET ( ex: 2N7000 )'s Vgs is about 3V ....  ( this is very different
to VLSI )
My power supply is only 2.4V, I have to do a level sh.t and then turn
on this mos.

EMC problems are happened in battery charger so, I trying to remove
them using bead, C and EMI core.
You can see it in this
http://my.dreamwiz.com/jyeonsuk/qna/emc_problem.pdf

I am doing a project using ATmega8. For that we need an ADC of atleast
5Msps. We first thought of using the built in ADC but I want to know
the maximum samples per second for the in built ADC? I guess it is
around 150Ksps but I am not sure. Can I increase this sample rate by

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Does anyone here know about the legalities of building small signal jammers
for say the 2.4gig small camera transmitters.
What I was meaning is if someone asked you to design and build them a
personal signal jammer, ( them being parranoid they may have a hidden camera

I Just bought an fm transmitter and since i hate the stupid plug and
all the wires i hard wired it to the car. first is this safe? also my
power supply to the transmitter is always on even when the key is out.
and the red LED on the transmitter is always on. My main question is,

Is there any major difference between NiMH chargers besides amount of batteries
and chargetime they can handle ..?
Any particular good/bad brands of batteries ..?
I'm wonder if low-end types miss temperature measurement and have a

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I have to send a high speed (~600 Mbit/s), bidirectional LVDS signal on
a single twisted pair line. I wonder if it can be done by using
something that works like a telephone hybrid transformer. Is such a
design possible? Does anybody knows about example or components for

I bought a 9V Lithium cell primary battery (single use battery, not Li-Ion
rechargable like in cellphones).
I suspect it might be old or not in good condition. To test it I hooked it
to 500 Ohm resistor and measured

I am an electrical engineer, and I know exactly how computer monitors
work, and I know how televisions work as well.
Thing is I have never repaired a television or computer monitor while
having it on and plugged.  I just can't risk it.  I never learned how

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www.digikey.com
www.mouser.com