[sdiy] saw/ramp from square?

[Dan Snazelle]

this article (on the DCO's in the JUNO)

http://www.electricdruid.net/images/dcos/larger/JunoDCOwaveshaper.gif

(from 
http://www.electricdruid.net/index.php?page=info.junodcos



explains a process for getting a ramp from a square. however...i am a bit lost.

is this diagram showing that the square wave plugs straight into the base of the NPN after passing through some caps and resistors (is that an integrator?)

i would LOVE to be able to find a way to get pretty good (dont need to be perfect) ramp waves or (anything other than square) out of my square waves


i had heard at some point that ELEKTOR magazine used to run lots of wave shaping articles back in the 70's,

any ideas?

thanks

AND HAPPY NEW YEAR TO ALL YOU SDIYERS!!




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