Heathkit HP 13A Manual

Page 1

Assembly
and
Operation
of the

fiI-IEATHKIT

TRANSISTORIZED

MODEL HP-IBA

TABLE OF CONTENTS

4
Introduction, , . . . . . . . . . . 2
Parts List. . . . ................. 3
Step-By-Step Assembly
Parts Mounting ............. . . . 4
D C POW ER 8 U P P LY Preliminary Wiring ............. 6
Circuit Board Wiring. . . . ....... . '7
Heat Sink Assembly, . , . , , , , , , . , 10
ChassisWiring......,..._... 11
Final Wiring ...... l3
Mounting Cover. . . . . . . . . . . . . . 14
Connector Wiring, , _ , . . . . , . . . , 14
Installation. . . . . . . . ............ 16
In Case Of Difficulty. . . . . ......... 13
SpecificatiODS. . . . . . . . .......... 19
Circuit Description. . . . . . . . . . . , . . 20
Schematic. . .(fold-out from page). . . . . 20
Replacement Parts Price List _______ 23
X-Ray View. . . . . . . ............ 24
Factory Repair Service, ,,,,,,,,, , . . 24

HEATH COMPANY
BENTON HARBOR. MICHIGAN 49022

Page 2

Page 2

Q HEATHKIT

INTRODUCTION

The Heathkit Model HP-13A Transistorized DC
Power Supply was designed to furnish all neces-
sary operating power for Heathkit Mobile Ama-
teur Transmitters, Transceivers, and Receiv-
ers, as well as for other brands of mobile
equipment.

This Power Supply is actually three DC power
sources in one unit. It provides high voltage
(800 volts), low voltage (300 or 250 volts). and
bias voltage (-40 to -130 volts). It also switches
DC filament voltage for the equipment with
which it is used.

Circuit features include relay control of all
primary power, plus individual circuit breaker
protection of the DC input to the Power Supply
and of the DC filament voltage line to the equip-
ment used with the Power Supply. The circuit
breakers are the automatic reset, load delay
type. They insure positive protection for all
equipment involved in case of an overload or
accidental short circuit.

The power transformer, an epoxy encapsulated
toroid unit is of advanced design, assuring
maximum efficiency. This transformer, in con-
junction with the power transistors used as
DC-to-AC converter, provides a high frequency
switching rate along with high power and instant
starting. Specially designed heat sink assemblies
provide maximum transistor cooling.

Efficient, long life silicon rectifiers and heavy
duty filter capacitors, mounted on a rugged
circuit board, provide trouble-free rectification
and filtering.

Because the complete Power Supply is physically
small, it requires a minimum of mounting space.
Under-the-hood mounting is recommended.

NOTE: Refer to the "Kit Builders Guide" for
complete information on unpacking, parts identi-
fication, tools, wiring, soldering, and step-by-
ste . assembly procedures.