File No. 648 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
OOCI8LlD
Solid State
Division
Power Transistors
RCA1B06
Silicon Transistor for
70-Watt
Quasi-Complementary-Symmetry
Audio Amplifiers
with
JEDEC TO·3
H-1570 Pi-Nu Output Transistors
RCA1B06 isan n·p·n pi·nu silicon transistor in a JEDEC TO·3
package. This device is especially characterized for audio·
amplifier applications, and can be driven by either RCA 1C03
or RCA lC04, n·p·n and p·n·p types, respectively.
The 7Q.watt amplifier shown in Figs. 1 and 5 uses the
RCA1B06 output device in coniunction with eleven other
discrete transistors, thirteen diodes, and a 90·volt split power
supply. The amplifier output is directly coupled to an B·ohm
speaker. The high·frequency RCA1B06 output transistors used
in the amplifier circuit produce excellent transient" response at
a high power level.
I
CLASS A
DIFFERENTIAL
. PREDR1VERS
p-n-p (21
RCA IAI6
0--
INPUT
DIFFERENTIAL
AMPLIFIER
n-p-n (21
RCAIA/7
I
CURRENT
SOURCE
n-p-n
RCAIAIS
-
I
VBE
MULTIPLIER
n-p-n
RCAIAIB
~
OVERLOAD
PROTECTION
CIRCUIT
I r) n-p-n RCAIAIB
(11 p-n-p RCAIAI9
CURRENT
SOURCE
n-p-n
RCAIA15
CLASS B
DRIVER
n-p-n
RCAIC03
-
FEEDBACK
CLASS 8
DRIVER
p-n-p
RCAIC04
-
OUTPUT
n-p-n
RCA1B06
I
OUTPUT
n-p-n
RCAI B06
92CM- 220t3
Fig. I-Block diagram and transistor complement for 70·watt quasi-complementary-
symmetry audio amplifier with pi."u output transistors.
9-74
503
