Heathkit HP-23A - Introduction

Page 2
INTRODUCTION
‘The
Heathkit
Model
HP-23A
AC
Power
Supply
is
designed
to
provide
all
the
necessary
operat-
ing
voltages
for
fixed
station
operation
of
Heathkit
amateur
radio
transceivers,
The
versa~
tility
and
many
features
of
this
Power
Supply
also
make
it
ideal
for
use
with
many
other
types
of
amateur
radio
equipment,
‘The
Power
Supply
features
a
high
voltage
source,
a
choice
of
two
low
voltage
sources,
fixed
and
adjustable
bias
sources,
and
6,3
and
12,6
volt
filament
sources,
Extensive
filtering
and
good
regulation
is
provided
for
the
DC
sources,
The
power
transformer
has
a
dual
primary
winding
which
can
be
connected
for
operation
from
either
120
or
240
VAC
power
lines.
A
series
connection
is
provided
at
the
power
output
socket
to
permit
turning
the
Power
Sup-
ply
on
or
off
remotely
from
the
equipment
with
which
it
is
used,
A
toggle
switch
on
the
Power
Supply is used to select the value of low B+
voltage available at the output socket, The switch
also will turn off the Power Supply, A circuit
breaker
in
the
primary
circuit
provides
over-
load and short circuit protection,
All output voltage connections from the Power
Supply are made through the power output socket
on the chassis, This provides an easy means of
rapidly changing the equipment from mobile to
fixed station operation,
Refer
to
the
Kit
Builders
Guide
for
complete
information
on
unpacking,
parts
identification,
tools,
wiring,
soldering
and
step-by-step
assem-
bly
procedure: