Stereo Preamplifier  (277-0106)      Parts List        Faxback Doc. # 9518

This PROJECT BOARD is designed for use with the STEREO POWER AMPLIFIER
(Radio Shack Cat. No. 277-0105).  It can be used to improve the quality of
an inexpensive stereo system equipped with a ceramic cartridge by
permitter the substitution of a magnetic cartridge phonograph. 
Equalization is providing for TAPE (NAB) at 3 3/5 IPS.  PHONO (RIAA),
TUNER or MICROPHONE.  The Stereo Pre-amp features a wide power supply
range - -12 volts to -24 volts.

Low Level Input  │
──────────────── │                                     ┌───
*Magnetic Phono  │   ┌───────────┐   ┌──────────┬──────┤
 Cartridge       ├───┤  277-0106 ├───┤ 277-0105 │      └───
*Magnetic Tape   │   │  Stereo   │   │ Stereo   │                8 Ohm
 Head            ├───┤ Pre-Amp   ├───┤   Amp    │      ┌───      Speakers
*Microphone      │   └───────────┘   └──────────┴──────┤
*Tuner           │                                     └───


This package contains a complete printed circuit board ready for parts to
be added.  To construct this project, you'll need the following parts:


                                                            Radio  Shack
Symbol           Description                 Quantity          Cat. No

C1, C7     50uF/16V Electrolytic Capacitor       2             272-0954

C2, C8     0.001uF Disc Capacitor                2             272-0126

C3, C9     0.01uF Mylar Capacitor (PC)           2             272-1065

C4, C5     0.022uF Mylar Capacitor (PC)          4             272-1066
C10, C11

C6, C12    5uF/16V Electrolytic Capacitor        1             272-1001

C13        1000uF/35V Electrolytic Capacitor     1             272-1032

CR1        1A/50PIV Diode                        1             276-1135

F1         1/4A Slo-Blo Fuse                     1             270-1288

IC         Dual Preamplifier                     1             276-1729

R1, R5     33 1/2 W Resistor                     2             271-0018

R2, R4,    2.2K 1/2 W Resistor                   4             271-0009
R6, R8

R3, R7     3.3K 1/2 W Resistor                   2             271-0028

S1         DPDT Switch (neutral center)          1             275-1545

S2         ON/OFF Switch (SPST)                  1             275-0324

T1         12V/300mA Transformer                 1             273-1385

           *Cabinet (Chassis)                    1             270-0252

           Fuse Holder                           1            270-0364

           Quad Phono Jack                       1            274-0322

           1 Lug Tie Down Terminal Strip         1            274-0685

           Power Cord                            1            278-1255

           Single Conductor Shielded             1            278-1277
           Microphone Cable

           #22 Hookup Wire                                    278-1307

* This is a suggested case to use for this Project.


(ALL/jlc-04/20/95)