General Radio 1265 User Manual

OPERATING INSTRUCTIONS

TYPE

1265-A

DC

ADJUSTABLE

POWER

SUPPLY

GENE

A

RAl

RADIO

COMPANY

.......

"'

o-

01

I

)>

O·

PERATING

INSTRUCTIONS

ADJUSTABLE

DC

TYPE

1265-A

POWER

Form

1265-0100-A

October,

1962

SUPPLY

GENERAL

WEST

Copyright

West

Concord,

CONCORD,

1962 by

R A D I 0

General Massachusetts,

Radio

MASSACHUSETTS,

Company

USA

COMPANY

USA

TABLE

OF

CONTENTS

Section

1.1

1.2

Section

2.1 Input

2.2

2.3

2.4

2.5

2.6

2.7

Section

3.1

3.2

3.3

3.4

3.5

3.6

Section

4.1

4.2

4.3

4.4

1.

INTRODUCTION .

Purpose Description.

2. OPERATING PROCEDURE

Load

Selection

Load Use Operation Impedance

3. PRINCIPLES

General Phase

Output Sampling Differential Overload

4.

Warranty. Service. Internal

Trouble

. . . • • •

Power Connections

Voltage

at

-Controlled

SERVICE

Connections

of

Constant

High

Temperatures

With AC

Ranges

• . . . . . •

Circuit.

and

Amplifier

Trigger

• . • . .

• . . • . . Adjustments. Shooting

. . . .

• . . • 3

• • • • • . . • • • • 3 Current

and

Current

Applied

OF

OPERATION. •

Rectifiers

• . • • • •

Metering

Circuit.

AND MAINTENANCE •

Adjustments

. . • • • • • • • 4 to

• • • . . • • 4

.•

Circuits

and

Reference

• . . .

•

or

Constant

Output. • 4

• • • • . •

Voltage

Circuits

Mode

• 3

• • • • 3

1

3

5

6 6

7

7 7 8 8

Section

5. PARTS

LIST.

10

Panel

Figure 1-1.

View

of

Type

1265-A

SPECIFICATIONS

Adjustable

DC

Power

Supply.

Full-Scale

0.16,

0.5,

200

watts.

Meters:

output

Overload

mately

Regulation:

age

Speed Hum

de

Voltage

ranges. Accuracy-

n~

change;

of

Response:

Level

output

Output Ranges:

1.6, 5 amperes,

and

current;

Protection:

times

(Voltage

1%

Overload

full-scale

or

for a

change

Approximately

(rms):

Approximately

(60 db on

12.5-volt,

12.5,

de;

in

ranges

±3%.

current.

current)

from

5-ampere

40, 125,

any

combination

are

circuit

trips

0.2% for full

load

0.1

second.

70 db

below

range)

This

instrument Telephone research, development

400

volts,

up to

switched

10%

to

at

approxi-

line-volt-

half

full

with

load

scale

.

is

licensed

and

Telegraph

investigation,

work in

pure

de;

.

Company

measurement

and

under

applied

Accessories

and

spare

fuses.

Mounting:

includes

cabinet the bench

Dimensions:

17X

panel panel,

Net

patents

solely

fittings

to

other;

use.

inches

19 15

Weight:

of

for

inches

testing,

science.

Supplied:·

Relay-rack

to

permit

be

removed

Type

1265-AM

Bench

(485

by

190

by 7 inches

(385 mm).

80

pounds

the

American

utilization

instruction

Type

panel

from

model,

by

(485

(37 kg).

in

and

CAP-22

with

either

the

has

end

width 19,

440

mm),

by

3-Wire

cabinet;

the

instrument

rack

without

supports

height

over-all;

180 mm),

Power

Type

for

rack

depth

Cord

1265-AR

or

the

disturbing

table

7~,

depth model, behind

or

INTRODUCTION

SECTION

1.1

PURPOSE.

The

Type (Figure power signed Type at range. tions

1-1)

to a wide

primarily

1630-A Inductance

various

It

is

in

load

1

connections the

the SHORTED

will

CURRENT

mum proximately immediately is

1265-A Adjustable

is a multi

range

impedance

particularly resistance

-range

of

as a current

Measuring

levels,

This

OUTPUT

The

output

prevent

Use

value

set

to zero.

unit

load

resistances.

useful

and

power

instrument

should

to

OUTPUT

voltage

position

damage particular mode. In

of

output

16

when

DC

that

bias

is

be

well

zero

before

SHORTED

is

unless

to

the

care

this

voltage.

seconds;

the

instrument

Power

provides

supply

Assembly,

over a wide

where

are

large

needed.

INTRODUCTION

WARNING

capable

zero.

shorting

case,

It

was

for

control

of

insulated

disconnecting

position

However, do

the

voltmeter

switch.

when

operating

an

open-circuited

The

open-circuit

therefore

is

Supply

high

de-

the

use

varia-

delivering

to

avoid

of

the

turned

of

accidental

the

OUTPUT

not

set

indicates

the

instrument

discharge

output

capacitors

OFF

or

the

lethal

load

this

output

output reference signals to

keep

changes the

The gray(low)binding (metallic) chassis. the

chassis

or

control

a low

when

signal.

output

binding

This

or

energy.

contact. changing control

output

in

will

time

are

the

OUTPUT

voltage

the

can

for

All

Always

the

ensures

to

the

voltage.

the

CONSTANT

result

in a maxi·

constant

not

discharged

or

Any

"firing

at

the

is

available

posts

post

be

either

loads

and

turn

range.

that

OUTPUT

This

is

ap-

control

current

difference

angles"

desired

at

on

therearpanel.

connects

used

as a grounding

side

the

of

with

between

of

level.

red

directly

the

load.

an

adjustable

the

rectifiers

(high)

The

point

the

and

to

two

the

third

the for

1.2 DESCRIPTION.

1.2.1 voltage stant power monitored The alternating overloading particularly combined

GENERAL.

(up

current

of

output

The

through

control controll.ed panel

switch

ulated

output.

to

400 (up

200

watts.

by

front-panel

circuit

current

the useful

to

give a composite

control

rectifiers

selects

Regulation

The

instrument

de

volts)

to

5 de

The

is

passive;

to

flow

regulating

when

amplifier

of

the

"firing

(see

either

in

amperes)

output

voltage

across

circuit.

ac

and

waveform.

regulates

angles"

Figure

voltage-

is

obtained

supplies

four

ranges

at a maximum

is

adjustable

and

current

this

permits a large

the

output,

This

de

voltages

the

output

of

1-2).

or

current-reg-

by

comparison

constant

and

meters.

without

feature

must

the

phase-

A

front-

con-

is

be

level

A

circuit

front

panel, damage that

1.2.2 either end or

to

occur

MOUNTING.

the

frames

Type mounting brackets to

be

withdrawn

tions

for

accompany

1.2.3

ACCESSORIES SUPPLIED. One three-wire with

the

instrument.

breaker,

provides

the

instrument

during

Type

1265-AM,

(Type

1265-AR,

brackets

permit

either independently

installing

these

Power

reset

overload

caused

constant-voltage

The

instrument

equipped

ZFRI-414-3)

for

relay-rack

(Type

ZSU-6-4)

the

cabinet

of

the

Type

1265-

brackets.

Cord

and

spare

by a switch protection

by

short

operation.

is

available

with

aluminum

for

bench

mounting,

included.

or

the

instrument

the

other.

AR

in a relay

Type

fuses

are

on

the

to

avoid

circuits

as

with

These

Instruc-

rack

CAP-22

supplied

..

TYPE

1265-A

T/01

Elementary

ADJUSTABLE

Schematic

DC

POWER

Diagram for

SUPPLY

Figure 1-2.

the

Type

1265-A

Adjustable

DC

Power

PUT

Supply.

1.2.4

CONTROLS AND TERMINALS.

CONSTANT VOLTAGE

CONSTANT CURRENT OUTPUT

VOLTS

AMPS

OVERLOAD-

POWER-OFF

None

RESET

S301

R206

S301

S302

S201

S101

PL101

J301, 302,

303

2-position switch

Continuous control, extreme clockwise

4-position switch

Momentary-contact and

2-position switch light

3-wire socket panel)

Jack-top posts rear

toggle

pilot

and

power (on

(three,

panel)

rotary

switch

counter-

end

rotary

switch

light

toggle

pilot

rear

binding

on

at

Selects

voltage

Rotary level, Pull knob to SHORTED

Selects (4

Selects for ranges).

Restores overload

Connects input

For 240-

For

load.

mode

or

control

switch

maximum

ranges).

full-

its

associated

trip-out.

power.

connection

volt

connection

of

operation

constant

adjusts

shorts

turn

to

position.

scale

operation

and

disconnects

to

power

mains.

to

current).

output

output.

OUTPUT

available

current ammeter

after

an

either

120-

any

appropriate

(constant

voltage

range

(4

line

or

2

None

S0301

4-wire (on

rear

receptacle

panel)

For

connection Incremental (as

in

the Type 1630 Inductance Measuring other

load.

to

Inductance

Assembly)

Type 1633-A

Bridge

or

to

any

General Radio 1265 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual