Heathkit HW-12 - Page 37

erate with the
e
Power Supply, and tt
oOlp
Power Supply.
qs
Other power supplies may be used, however,
their use may require one or more of the
- OPTIONAL changes. to the Transceiver circuit
board to provide proper screen voltage to the
output tubes, The older Heath Model HP.20
(120 VAC Power Supply with proper termina-
tion of the power cable, and the Model HP-10
(12 V DC) Power Supply with slight modifica-
tion can also be used with the Transceiver,
These two Power Supplies will be discussed
later,
NOTE: Connectors are supplied for connecting
the power supply cables to the Transceiver,
HEATH HP-13 POWER SUPPLY
Referring to Figure 1A, wire the octal socket
(with cap) of the Transceiver to the Power
Supply cable as follows:
Be nP US cfu at
YG cape
<a Uy mike r BN IN-LINE NY
SRN
NG
a
B-,C+ | /GRN
POWER SUPPLY Zip -130V
CABLE CNP LBIAS
IN-LINE
FUSE
r Figure 1A
f
SOCKET CABLE WIRE COLOR
DIN#
<a aan
nD =
Pas
ae Qt
oo s
i) i=) =
t
Om. a § Q
Orange - B+ (250 V low tap)
Yellow - B+ (800 V)
Blue - Switch
Red - Filament (12 V DC)
Black - Filament (ground)
In-line fuse lead O-A1 Do & 69
a a ei A ea ARN a A SS
wy e 7
fal
oO
ze
ges 50
A
sh
SY"
,
The other end of the cable should be connected
to the 15-pin plug as directed in the Power
Supply manual,
ee
ciadinenmmalemnemansic: 1 ng
R ing to Figure IB, wire the octal socket
‘with cap) of the Transceiver to the Power Supply
cable as follows:
<< yyy.
: Blu pep
B00V FIL I VAC ‘
res a eB
PLU “TN Se
ae |
é !
CAP As :
BE i cA | ORE, BSOV TON COMMON a |
. 2 CO
8
= Tier
POWER SUPPLY Sc | [sev
CABLE BIA
Figure 1B
SOCKET CABLE WIRE COLOR
_PING
1 Green - Bias (-130 V)
2 White - Ground (B-, C+)
3 Orange - B+ (250 V low tap)
4 Yellow - B+ (800 V)
5. Blue - Switch
§ Red ~ Filament (12 V AC)
q Black - Filament common
(12 V AC)
8 Brown - Switch
The other end of the cable should be connected
to the 11-pin plug as directed in the Power Supply
manual,
HEATH HP-20 POWER SUPPLY
The HP-20. Power Supply can be used as is,
without modification, The ‘octal socket with
cap should be wired on the Transceiver end
of the power cable according to Figure 1B. An
octal plug with cap should be wiredtothe Power
Supply end of the cable, using the same wire
colors and pin numbers cCailed out in Figure iB.
Be sure to use the correct pin numbers, as
moided into the piug, and to install the OP-
TIONAL resistors in the Transceiver.
NOTE: The OPTIONAL resistors mentioned
below are not supplied in the kit, These resistors
can be obtained from a local parts supplier,
1, Remove the long jumper in section 4A of
the Transceiver circuit board,