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Hi. I was looking to find a npn bjt transistor in OrCad Lite that I could simulate.
It should have hfe=50 and dc Ic a few hundred mA's up to an A.
It will be used for the circuit in picture and maybe for other circuits as well
thanks
Ok thanks. So to understand there are two ways to do FSK
1. NCO with a DAC
2. PWM pin with low pass filter
In the long run I am aiming in designing a 35 MHz transmitter (RC toys frequency). So what I am thinking is to mix the FSK signal with
a higher frequency say 455KHz and then do another...
By doing a quick search I found that microchip has some microcontrollers that have an NCO.
**broken link removed**
Also I found the following VCO implementation:
https://www.microchip.com/wwwAppNotes/AppNotes.aspx?appnote=en560172
DAC...
Can you point me to the right direction for selecting a DSP chip? Can you suggest one? Is it a dsPIC30F by microchip a DSP chip? Also
can you suggest a D/A converter?
By NCO you mean "numerically controlled oscillator"?
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By doing a quick search I found that microchip has...
Hi!
I have an FTDI cable that outputs TTL signal when connected to PC. I would like to use that binary signal to do
FSK modulation. When binary 1 a 15KHz sinewave as an output from modulator and when binary 0 5Khz sinewave from modulator.
There should be continuity between 5KHz and 15KHz...
Hi! This is my first post in eda.
I am revising my electrical principles for circuits so I am studying Principles of Electric circuits Electron Flow by Floyd. In pg. 358 an example is given of a bridged-T circuit and Loop current method is applied to find the currents of the loops.
It finds...
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