Page 281 - Build Your Own Transistor Radios a Hobbyists Guide to High-Performance and Low-Powered Radio Circuits

I I

FIGURE 15-22 SQ( t), а square-wave signal that is shifted Ьу 180 degrees.
For the derivation, thеп,

х + - RГ Х [1 -

==2 (. Х J-
However, from Equation (15-5),

s =1..- 211" .t - l...
2 7 ...
апd

V = 2У R.' Х [t + f СО (21f t) - ~ со ( 1ff () + lтr (1 1ff () - :j; со (141ifJ) . .. ] - Rl '
!
OIJ
(15-17)
V - 2У Rt' Х t + 2У R~' Х [~ о (2'П~./) - ~ о (6'ТТ~ ) + ~ о (lО'ТТ~ t) - l;. о (14'ТТ~'i ) ... ] - V Rf'
nU1
апd

v u = ю.' + 2 Iu" Х ; о (21Т ,t) - 1~ СО 1т t) + 1:. со lО1Т t - l.. с 141Т t) ... - Ю~
770
15-18)