Table of Contents
Advertisement
?45V
~':!!2'!!_~~2.:.
Composed by cathode-follower as per Fig.
8.
The bias is fixed at this stage.
Noise
"
of zener is reduced down to the aliowable
Signal
level by high cut filter.
'Jutp.Jl
fig.-S
4700P
4.7K
5.6K
92rnH
~~~~-g,!!_~~~!~::
Shown by Fig. 9, and attenuates -12dB/oct. by
means of LC.
The filter frequency is
decided inview of load and lOOK ohms
+
200pF
(main input impedance and shield wire).
Signa~
o----c)-.M)-----f--------1I------<O
S~~~pa~t
input
270P
470K
fig.-9
6.52V
Fig. 10 shows whole circuit,
which is made by whole stage
direct coupled pure
complementary SEPP configuration.
Q2 retains the fixed current
load triggered by Q3 and
yields the output of about
100rnW into 8 ohms.
Ql
Q3;2SC1222
Q2
;2SAMO
Q4
; 25C375
Q5
;2SA562
Signol
output
~~g~:l 0--II-.Mf'-~-+___I(
p
2. 2/
22K
t---t--N'I--+-:-::C::c-1--lII---r--G
1.2K
fig.-lD
3
Hide quick links:
Advertisement
Table of Contents
