Global Specialties 1505 User Manual

Page 4

SECTION - 1

INTRODUCTION

ISOLATED VARIABLE AC LINE SUPPLY : MODEL1505

The 1505 Isolated Variable AC Source cum leakage current tester
is designed for modern electronics laboratories needing a clean,
electrostatically and galvanically isolated variable line supply.

The unit is designed to provide isolated output variable from 0 to 130
V AC at 4 Amps max and 0 to 260VAC at 2A max on two seperate
output sockets through a range selector switch.The output voltage
and load current can be monitored on a 3 digit DPM. The variable
isolated output voltage capability makes this unit very convenient
to use for either incoming or outgoing quality control testing. It is
also useful for servicing or circuit design work, when checking
operation at voltage higher or lower than normal. The unit consists
of a super isolation transformer which is triple shielded from the line
to protect against shock hazards.

The 1505 can measure power line leakage current by means of a
probe and a switch selected range of the output DPM. It can
measure leakage currents upto 9.99 mA. The unit is overload
protected by means of an input /output fuse.

INITIAL INSPECTION

Before shipping, the 1505 power supply has been tested thoroughly
and found free of mechanical and electrical defects. As soon as it
is unpacked, inspect for any damage that may have occurred during
transit. Particular attention should be paid to the meters. Also
check the packing material for any signs of severe stress (may
be indicative of internal damage). Save all the packing material.
Read the INSTRUCTION MANUAL carefully prior to operation.

PCB Components

0893 DPM

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Reference Designator

Part Description

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CAPACITORS
C1

220pf 100V ±20% CD

0.1µf 100V ±10% MP

0.01µf 100V ±20% CD

0.47µf, 100V ±20% CD

0.1µf, 50V ±10% MP

10µf, 35V ±20% EL

0.1µf, 50V ±10% MP

0.1µf, 50V ±20% CD

Not used

C10

470µf, 35V ±20% EL

C11

2.2µf, 50V ±20% EL

* C12

47µf 50V, ±20% EL ( Additional )

* C13

0.1µf 50V, ±20% CD ( Additional )

DIODES
D1

1N4148

D3 TO D6

1N4007

TRANSISTORS/FET’S
Q1

TL431

MPSA12

LM7805

IC
IC1

ICL 7107 CPL

FND’S
DS1

TSD566 ( Green )

DS2

TSD566 ( Green )

DS3

TSD566 ( Green )

LED’S
LED1

3mm GREEN Defused

LED2

3mm GREEN Defused

CONNECTORS
CON1

3 PIN 2.54 PITCH ( Male / Female )

CON2 ( L' Type ) 7 PIN 2.54 PITCH ( Male / Female )