Heathkit XP 2 Schematic

Page 1

INTRODUCTION

The HEATHKIT Model XP-2 Power Pack has
been designed for use with the Model GC-l Re-
ceiver to supply direct current at 12 volts, up to
200 milliamperes continuously. If the GC-l Re-
ceiver is to be operated from all? volt AC out-

let socket, the XP-Z Power Pack should be
installed in the rear of the cabinet, connecting
the power plug of the receiver to the socket of
the power pack.

CIRCUIT DESCRIPTION

The Model XP-Z Power Pack utilizes afull-wave
rectifier circuit with a 2-section RC filter. The

pilot lamps of the GC-l Receiver are connected

in the circuit as a bleeder resistor. The recti-
fiers are silicon diodes which have a peak cur-

rent rating of thirty times the power pack re-
quirement. This accounts for the low internal
impedance and excellent voltage regulation of the
XP-Z. A protective fuse is included in the pri-
mary circuit of the power transformer.

.483n1% .483fl. 1%
o - --I
I9.2V
II5V, 50-60 CY. C.T. -D+
V8 A' SILICON
RECTIFIERS '000 M F___ '000M5__+
I /'\_ _
, |5V I5v
> DP
0 O
HEATHKIT POWER SUPPLY
FOR GC-I RECEIVER PINS
MODEL xp-z ,
1 5,6,7 *3,4
PINSH 9.0N SOCKET
O O _0 ON SOCKET (5+
(To A.C.SWITCH) I2v 11c.
NOMINAL

CONSTRUCTION NOTES

This manual is supplied to assist you in every
way to complete your kit with the least possible
chance for error. The arrangement shown pro-
vides for the Optimum accommodation of all

components in a minimum of available space and
is the result of extensive experimentation and

trial. If followed carefully, you will have con-
structed a stable, dependable receiver power
supply unit. We suggest that you retain the man-

ual in your files for future reference, both in

the use of the unit and for its maintenance.

Page 2

UNPACK THE KIT CAREFULLY AND CHECK
EACH PART AGAINST THE PARTS LIST. In so
doing, you will become acquainted with the parts.
Refer to the charts and other information on the
inside covers of your manual to help you identify
the components. If some shortage or parts
damage is found in checking the Parts List,
please read the REPLACEMENT section and
supply the information called for therein, and
include all inspection slips in your letter to us.
Hardware items are counted by weight and there