B&K 1652 Manual Do Utilizador

 

22

b. Similarly, the positive polarity can be grounded by 

strapping the red (+) terminal of the “A” supply to 
the green (GND) terminal as shown in Fig. 8B. 

c. If “split supply” operation is desired, a positive and 

negative voltage with a center ground can be 
achieved by strapping the black (-) terminal of the 
“A” supply to the green (GND) as shown in Fig. 8C. 
See the APPLICATIONS section of this manual for 
more information on “split supply” operation. 

d. If an earth ground reference is not required, the 

configuration of Fig. 8D may be used. The scheme 
in Fig. 8D should also be used where it is not known 
whether the chassis is common with either the 
positive or negative polarity. 

e. If the chassis or common of the equipment being 

powered is separate from both the positive and 
negative polarity power inputs, use the connection 
shown in Fig. 8E. 

9.  Observe proper polarity. If the circuit being powered is 

not equipped with reverse polarity protection, damage 
to the circuit can result from reverse polarity. Use 
color coded hook-up leads, for convenience in 
identifying polarity, red for (+) and black for (-). 

10.  Make sure that the hook-up leads offer sufficient 

current capability and low resistance between the 
power supply and the circuits being powered.  The 
hook-up leads supplied with the power supply are rated 
for 4 amps. 

PARALLEL TRACKING OPERATION 
  In the parallel tracking mode of operation, both supplies 
are strapped together (in parallel). This allows for a 0-24 V 
supply with a 1 amp current capability.  Only the “A”  

output terminals are used for parallel tracking operation. In 
the parallel tracking mode, the “B” supply output voltage 
and current track the “A” supply output voltage and 
current. 
1. Set the power supplies t TRACKING PARALLEL mode 

by setting the TRACKING/INDEPENDENT switch to 
the PARALLEL (middle) position. 

2. Set the A/B Metering switch to the A (up) position.  

Output voltage will be read from the Volt meter.  Output 
current is exactly DOUBLE the value read from the mA 
meter (because each supply is providing the same amount 
of current). 

3. The “B” VOLTAGE and CURRENT controls are 

disabled; turn both to their minimum positions.  The 
maximum current and voltage are set using the “A” 
controls.  Using the “A” supply output jacks, follow the 
instructions for “Setting Current Limit” 
(INDEPENDENT USE OF “A” OR “B” SUPPLY 
paragraph of this section).  Remember that the actual 
current output at the “A” supply output jacks is double 
the reading on the mA meter. 

4. Adjust the output voltage to the desired level using the 

“A” VOLTAGE control. 

5. Turn off the power supply and the equipment to be 

powered during hook-up. 

6. Connect the positive polarity of the device being 

powered to the red (+) terminal of the “A” power supply. 

7. Connect the negative polarity of the device being 

powered to the black (-) terminal of the “A” power 
supply. 

8. Fig. 9 illustrates the grounding possibilities when used in 

the TRACKING PARALLEL mode.