background image

11

be controlled to increase the output voltage of the setup (uppermost one of the instrument
connected in series operates as the master unit).

4.10.1

4.10.1

4.10.1

4.10.1

Except that the master unit is operating in “L” (local) state, all the slave units are in

the state of the output voltage controlled by the external voltage signal, that means the master
unit’s R/L (remote/local) selector switch is thrown to “L” position, while the switch of the
slave unit is turned to “R” position. V/C (voltage/current) selector switch is thrown to “V”
position.

4.10.2

4.10.2

4.10.2

4.10.2

All the output terminals of the power supply are in series connection shown Fig8.

4.10.3

4.10.3

4.10.3

4.10.3

On the top of the Figure is a master unit. Resistor R1 is connected to “+” output

terminal of the uppermost unit and the remote

control input jack of the first slave unit.

Resistor R2 is connected between the remote contro1 “

" input terminal of the first slave

unit and the remote

control “ +” input jack Of the second s1ave unit.

4.10.4

4.10.4

4.10.4

4.10.4

The voltage setting potentiometer and current setting potentiometer are turned to the

extreme positions of each s1ave unit clockwise.

4.10.5

4.10.5

4.10.5

4.10.5

All the “GROUND” terminals of the instrument are connected to one common line

which is connected to a potential line as required.

4.10.6

4.10.6

4.10.6

4.10.6

Turn on both “POWER” and “OUTUPUT” switches of the master unit and the slave

unit.

NOTE:

NOTE:

NOTE:

NOTE:

(1) For the remote

control operation, it is necessary to control the master unit only.

(2) Position of 1imiting current of all units must be preset previously.
(3) Calculation of resistors R

1

(R

2

).

(4) When this instrument is operating in CV mode, the CV lamps (green) both of the master
unit and the slave unit light.

R

1

= E

1

/E

2

.x A

10K

Ω

where: R

1

0

or

E

2

A/10

×

E

1

R

1

(R

2

) external1y connected resistor (K

Ω)

E

l

: Output vo1tage of the master unit (V)

E

2

: Output voltage of the slave unit 2 (V)

If E

1

=E

2

=E

3

, then R

1

=R

2

(5) Maintenance of the Instrument

5

5

5

5

...

.

MAINTENANCE

MAINTENANCE

MAINTENANCE

MAINTENANCE

5.1

5.1

5.1

5.1

Inspection

Inspect the instrument at regular intervals so that it maintains its intia1 performance for a
certain period.

5.2

5.2

5.2

5.2

Removing Dust and Dirt and Clean Treatment

When the panel has become dirty, wipe it 1ightly with a cloth moistured and a neutra1
soapsud, and then wipe it with a clean dry cloth. For c1eaning the inside of the instrument,
remove dust from the inside of the case and ventilation holes of the cover by using a
compressed air or the exhaust air of a vacuum cleaner. Be carefully when cleaning dust of the

Rated Voltage

24V System

32V System

55V System

100V System

Coefficient A

24

32

55

100V

Содержание DH1719A

Страница 1: ...age Current Voltage Current Voltage Current Power Power Power Supply Supply Supply User User User s s s Manual Manual Manual Da Da Dah h hua ua ua Company Company Company of of of Electronic Electroni...

Страница 2: ...ENTS CONTENTS CONTENTS Description Description Description 1 Operating Features 2 Operating Principle 3 Structure Features 4 Applications 5 Maintenance 6 Completeness of the Instrument 7 Storage 8 Gua...

Страница 3: ...this instruction manual before use the power supply 1 1 1 OPE OPE OPER R RATING ATING ATING FEATURES FEATURES FEATURES Model DH1719A 2 24V 5A DH1719A 3 32V 4A DH1719A 4 55V 2A DH1719A 5 100V 1A INPUT...

Страница 4: ...voltage generator The output current and voltage depend on setting the reference voltage Model DH1719A 2 24V 5A DH1719A 3 32V 4A DH1719A 4 55V 2A DH1719A 5 100V 1A DC VOLTMETER Range Selection Accura...

Страница 5: ...it always keeps pre setting value constantly that means this instrument can automatically be converted from constant voltage mode to constant current mode so as to protect the load from over current...

Страница 6: ...TRUCTURE FEATURES FEATURES FEATURES The instrument is designed symmetrically between left and right on the front panel On the upper side there are two digital meters Down the meter there are two indic...

Страница 7: ...lue To keep the voltage position turn off the OUTPUT switch and remove the short bar connect the 1oad press the OUTPUT switch the instrument provides the required current and voltage for the load 4 4...

Страница 8: ...can be control1ed with the voltage setting potentiometer manually on the front panel NOTE NOTE NOTE 5 5 5 Make sure that the output voltage is within the rated output voltage of the instrument 4 6 4...

Страница 9: ...8 4 8 4 8 Paral1el Operation In order to obtain a large output current two or more instruments can be connected in parallel then adjust their output voltage to the same voltage leve1 If differences o...

Страница 10: ...units are connected in paral1eI as shown in Fig 6 4 9 3 4 9 3 4 9 3 Throw R L switch to R position The current setting potentiometer is set to the extreme position 4 9 4 4 9 4 4 9 4 Turn on the OUTPU...

Страница 11: ...are connected to one common line which is connected to a potential line as required 4 10 6 4 10 6 4 10 6 Turn on both POWER and OUTUPUT switches of the master unit and the slave unit NOTE NOTE NOTE 1...

Страница 12: ...Connect an ammeter with accuracy 0 2 to the output termina1 turn on OUTPUT switch and feed the current after feeding the current for approximately 20 minutes calibrate the output current with potentio...

Страница 13: ...nstrument The output terminal is a reference point when the instrument is measured 5 5 5 10 10 10 1 1 1 The voltage of the aux power supply is 15V 5 5 5 10 10 10 2 2 2 The voltage of each measured poi...

Страница 14: ...ition keep the instrument from smoke gas acid alkaline and other corrosive materials be sure not to place the instrument in high temperature and more dust place so as to keep the instrument clean Afte...

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