I just came across this schematic for the ByteBlaster II:
Someone has probably worked out the circuit by tracing the connections on a unit as Altera hasn't published it, AFAIK.
Leon
I just came across this schematic for the ByteBlaster II:
Someone has probably worked out the circuit by tracing the connections on a unit as Altera hasn't published it, AFAIK.
Leon
-- Leon Heller, G1HSM http://www.geocities.com/leon_heller
a
You need to register to be able to download the above file.
Leon
-- Leon Heller, G1HSM http://www.geocities.com/leon_heller
And does it work ?
Rene
-- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
on a
I mean to try it, when I get my Cyclone board finished.
Leon
-- Leon Heller, G1HSM http://www.geocities.com/leon_heller
It looks about right if SOT-23's were used for all the diodes and transistors.
Nial
A problem with this is that the BF550 and BF570 transistors used are unavailable - 20 weeks delivery according to Arrow. 8-(
I'll see if I can find equivalent devices.
Leon
-- Leon Heller, G1HSM http://www.geocities.com/leon_heller
Leon
I have tried the website, I even registered, but somehow, I cannot click on the "byteblaster.pdf" link to download. How do you get to download the file??
Thanks Ted
Click on the disk icon in the second column
on a
Since this is not a precision analog device, I guess any bipolar does the job. Basically two inverters to boost the voltage plus an emitter follower to lower the output impedance.
Rene
-- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
Did anyone succeed in getting it to run ? It appears to be too simple. Even simpler than the MV. Not partwise, but from the functionality.
I didn't even try as I get one from Altera. But, just in case one of my customers is going to need one ...
Rene
-- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
Basically they are the same. if you check the pinouts all that's been done is to make the levels far more variable. You could probably do the same job with 74VCX series from Fairchild except you would loose 5V operation. (but the comparator is a nice touch). I have seen a 3V3/5V version of this design but using logic gates already.
Sim>
on a
Can U, please, send me a byteblasterII schematic file if U have it. Thank U! Bojan
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