HP 13255 Manual

HP 13255
POWER SUPPLY MODULE
Manual Part No. 13255-91142
REVISED
SEP-06-77
-----~--- -.------- ----------"-- ---- ----_._--_.- - -------------------
----
DATA TERMINAL
TECHNICAL INFORMATION
HEWLETT iii PACKARD
Printed in U.S.A.

13255
Power Supply Modul~
1.0 INTRODUCTION.
13255-91142/02
Rev SEP-06-77
The Pow~r Supply Module generates the following required voltages for
the 264XX Data Terminal product line: +5 volts at 12 amperes, +12
volts at 1.5 amperes, -12 volts at 1.5 amperes, and -42 volts at 0.6
amperes. Either one of the 12-volt supplies may be loaded to 3
amperes continuouslY, as long as the other 12-volt supply current is
reduced so tnat the total current from both supplies does notexceed
3 amperes. The maximum total power of all voltage outputs must not
exceed 110 Watts. Parts list for 02640-60083 is contained in module
section 13255-91004.
2.0 OPERATING PARAMEfERS.
A summary of operating parameters for the Power Supply Module is
contained in tables 1.0 through 3.1.
TabLe 1.0 Physical Parameters
----------------------------------~---~-------~---------~----~----~-~-~-~---~---
-------------- ------------------------------------~-----------------~-~------~--
I Part
I Number
Nomenclature
Size (L x w~ x D)
+1-0.100 Inches
Weight
(Pounds)
1============= ============================== ======================= =========
I
I 02640-60083
1
I 02640-60169
I
, 02640-60131)
I
I 02640-60142
I
I 02640-60148
I
Cable Assemoly
Power Supply Control peA
Power Suoply PCA
Power Supply Assembly
Cdble flssembly
N/A
NIA
3.9 x 3.6 x 1.0
0.3
15.3 x 6.4 x 4.5 8.0
NtA
N/A
N/A N/A
1==============================================================================
I
I
1 Number
of BaCKplane Slots pequirea:
NOT APPLICARLE
------------------------------------------------~----- --------------------------
------------------------------------------------------ -------------------~~---~~

HE> 13255
POWER SUPPLY MODULE
Manual Part No. 13255-91142
REVISED
SEP-06-77
---------------------------------
------------~--.-------.--------
NOTICE
The information contained in this document is subject to change
without notice.
HEWLETT-PACKAKD MAKES NO wARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT 1-40T LIMITED 1'0 THE IMPLIED WARRANTIES OF
MERCHANTABILITY A~D FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard
shall not be liable for errors contained herein or for incidental or
consequential damaqes in connection with the furnishing, performance,
or use of this mat~ridl.
This document contains proprietary information which is protected by
copyright. All rights are reserved. No part of this document may be
photocopied or reproduced witnout the prior written consent of Hewlett-
Packard Company.
Copyright c 1976 by HEWLETT-~ACKARD COMPANY
NOTE:: This document is part of the 264XX DATA TERMINAL product
series technical Information Package (HP 13255).

13255
Power Supply Module
1.0 INTRODUCTION.
13255-91142/02
Rev SEP-06-77
The Power Supply Module generates the following required voltages for
the 264XX Data Terminal product line: +5 volts at 12 amperes, +12
volts at 1.5 amperes, -12 volts at 1.5 amperes, and -42 volts at 0.6
amperes. Either one of the 12-volt supplies may be loaded to 3
amperes continuously, as long as the other 12-volt supply current is
reduced so that the total current from both supplies does notexceed
3 amperes. The maximum total power of all voltage outputs must not
exceed 110 watts. Parts list for 02640-60083 is contained in module
section 13255-91004.
2.0 OPERATING PARAMEfERS.
A summary of operating parameters for the Power Supply Module is
contained in tables 1.0 through 3.1.
Table 1.0 Physical Parameters
--------------------------------------~---------------------------~---~-~---~---
-------------~ ----------------------------~----~------------~------~-~--~------
I Part
I Number
Nomenclature
Size (L x W~x D)
+/-0.100 Inches
Weight
(Pounds)
1============= ============================== ======================= =========
I
I
02640-60083
1
1 02640-60169
I
, 02640-60130
I
1 02640-60142
I
I 02640-60148
I
Cable AssemolY
Power Supply Control PCA
Power Supply PCA
Power Supply Assembly
Cable Assembly
N/A
N/A
3.9 x 3.6 x 1.0
0.3
15.3 x 6.4 x 4.5 8.0
N/A N/A
N/A N/A
1==============================================================================
I
I
I Number
of BaCKplane Slots Fequired:
NOT APPLICARLE
--------------------------------------------------------------------------------
------------------------------------------------------ -----------~-~------~---~~

13255 13255-91142/03
Power Supply Module Rev SEP-06-77
Tabl@ 2.0 Reliability and Environmental Information
------~---------------------------~-----------------------------~-------~---~---
-----~-------------------~-----------------------------------------------~--~--~
Environmental: ( X ) HP Class ~
( )
Other:
Restrictions: Type tested at product level
==============================================================~===============
Failure Rate:
1.552
(percent per 1000 hours)
--------------------------------~--------------------- --------------------------
-------------------------------~--------------------------------------------~---

13255
13255-91142/04
Rev SEP-06-77
Power Supply Module
laole 3.0 Connector Information -Power Supply PCA
~------------------------------------~--------------~--------------------~---~-
-------------------------------------~---------------------------------------~--
I·
Connector Signal
and Pin NO. I Name I
==============1================
I
Jl, Pin -1 I
,
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
J2, Pin -1
-2
-3
Pin -4
through
Pin -6
-7
-8
-9
-10
-11
+5V
+5v
+5V
+5V
GND
GNf)
GI'JD
GND
+12V
+12V
-12V
-12V
GND
GND
+5V
+5C
+5C
+5C
+5C
+SC
Signal
Description
------------------------~--------------------- ----------------------------------------------
}
}
}
}
}
Not Used
} Power Connection
} To Backplane
}
}
}
}
}
} Not
} Used
}
Ground
Ground
Sense Line From 8acKplane +5V Output
} Not Used
}
}
}
} Power Supply Which Runs
} Main
Supply Logic
}
-12 SENSE RETURN Sense Line From Primary Current
Measuring Transformer
-13 } Not
-14 } Used
-15 CURRENT SENSE Sense Line From Primary Current Measuring
Transformer
================================================================================

13255 13255-91142/05
Power Supply Module Rev SEP-06-77
Table 3.0 Connector Information -Power Supply PCA (Cont-d.)
================================================================================
Connector I
and Pin No. I
Signal
Name
S1gnal
Description
==============1================ ==============================================
J2, Pin
-A
+16V
Unregulated Power From Aux1llary Supply
Pin -B }
through
} Not Used
Pin
-F
}
-H
+5C Power Supply Which Runs Main
Supply Logic
-J
}
-K } Not Used
-L
}
-M -42V
} Power
Supply Outputs
-N
-12V
}
Used for Test Purposes
-p
+12V }
-R
RASE
DRIVE
1 }
Outputs Which Run Main
-S
BASE
DRIVE
2 }
Supply Transistors
-------------- ---------------- --.------------------.------------------------
J3, Pin -1
-2
-3
-4
-5
-42V
+5V
+12V
GND
} Power Connection to
} Sweep Cable Assembly
Not Used
} Power Connection to
} Sweep Cable Assembly
-------------- ---------------- ---------------------------------~------------
J4, Pin -1
-2
-3
-4
115V
NEUTRAL
GND
LINE
}
} Connection to
} Line
}
--------------1---------------- -----------------------------~~--~----~-------
J5, Pin -1
-2
-3
-4
115V
NEUTRAL
GND
LINE
}
} Power Connection To
} Auxilliary Cable Assembly
}
~-------------------~-----------------~-~-------------------~-~----------------
------------------~--------------------~~------------------~----------------~~--

13255 13255-91142/06
Power SuPply Module Rev SEP-06-77
Table 3.1 Connector Information - power Supply Control peA
------------------------------------~-~---~----~--------~-~--~------~-------~-~-
-----------~-------------------- --------------~----------------------------~---
Connector
and Pin No.
--------------
--------------
Jl, Pin -1
-2
-3
-4
-5
-6
-7
-R
-9
-10
Signal
Name
----------------
----------------
-42V
PWR ON
BASE DRIVE 1
BASE DRIVE 2
+16V
+5C
SYS eLK
GND
Signal
Description
------------~---------------------------------
-----------------~----------------------------
}
}
To
}
Backplane
}
Not Used
}
} 1'0
}
Backplane
}
Not Used
----------~-~- ------~--------- ---------~-----------~------------------------
P1,
Pin
-1 GND
}
-7
G~d)
}
To Power
supply
PCA
-3
+5V
}
Pin -4
through
} Not
Used
Pin
-fi
}
-7 +5C
To
Power
Supply peA
Pin -R }
throuqh-l1
}
r~ot
Used
Pin
-11
I ~
I
I }
-.1:£ St;f\jSF:
RETUPN
I }
-13
SYS
CLK
I }
To
Power
Supply
peA
-11
PwvR
0;\1
I t
-15
CUKRE~T
SEf\ S r~
I }
------------------------------------------------------ ~-------------------~-~---
--------------------------------------------------------------------------------

13255
Power Supply Module
13255-91142/01
Rev SEP-06-11
Table 3.1 Connector Information -Power supply Control PCA (Cont'd.)
~---------------------------~-------~-------------~-~--~~----------------------
-~-----~--------------~-----~--- ----~--~-~-~-----------------------------------
Connector Signal
and Pin No. Name
---~---------- --~----~--------
-------------- --------------~-
P1,
Pin
-A
+16V
Pin -B
through
Pin -L
-M -42V
-N
-P
-R
BASE DRIVE
1
-S
BASE
DRIVE
2
Signal
Description
-------~-------~-~-----~----------------------
-------------~---~----------------------------
To Power Supply peA
}
} Not Used
}
To Power Supply peA
}
} Not Used
}
}
}
To Power Supply peA
}
================================================================================

13255
Power Supply Module
13255-91142/08
Rev SEP-06-77
3.0 FUNCTIUN4L DESCRIPTION. Refer to the module block diagram (figure 1),
sChematic diaorams (figures 2 and 3), timing diagram (figure 4), compo-
nent location diaqram~ (tiqures 5 ana 6), ana parts lists (02640-60169,
02640-60130, 02640-60142, and 02640-60148) located in the appendix.
As snown in the clock diaqraffi, the Power Supply Module consists of
two printed-circuit assemblies, the power Supply PCA and the Power
Supply Control peA.
3•1 PO tHo: t-\ S tJ p PLY peA.
3.1 • 1
3.1 .2
3.1.~
The yOWpr ~uPplv peA contains all of the high-level electronics of the
power su~plv. This assemhlv connects to the power line and supplies
power to the terminal data bus and Sweep Module.
Line Rectifier.
The line rectifier block connects to tne power line and rectifies and
filters the incoming ac power. The line voltage select switching is
done by fuse location and confioures the rectifier eittler as a voltage
aoubler (t1S-volt operation) or as a bridge rectifier (230-volt opera-
t i on) •
Logic ~ower Supply.
The logic power supply block also connects directly to the oower line.
Its function is to proviae power to the Power supply Control PCA and
driver transistors in the chopppr bloCk. The logic power supply has
two outputs, +16 volts unreaulated and +5 volts regulated (+5C).
Chopper.
The chooper blOCK contains two power transistors (Q3,Q4) in the primary
circuitry and two driver transistors (Ql,Q2). The driver transistors
are driven by alternating pulses Which come from the Power Supply
Control PCA. The fllnction Of the chopper clOCk is to chop tne dc out-
put from the line r~ctifier block and aoply the chopped Signal to the
power supply main transf~rmer (T2). The basic power supply regulation
taKes place durinq this chopping operation as the average output vol-
tage is proportional to the width of the pulses applied to the Chopper.
Current sensing takes place 1n this block ana is applied to a current
limit circuit on the Power Supply ContrOl PCA.