2.2 Operating method
2.2.1 Independence use of two adjustable output
2.2.1.1 Set (7) and (9) switch to spring out position.
2.2.1.2 When the adjustable output is used as CV output, first should rotate clockwise the CC adjustment
(2) and (17) to maximum, then turn on power switch (13), adjust CV adjustment (4) and (14) till
output voltage reach required voltage value. At this time, the CC state indicator (1) and (11) go out
and the CV state indicator (3) and (12) light on.
2.2.1.3 Used as CC output, after turning on power switch (13), first rotate clockwise the CV adjustment (4)
and (14) to maximum, while rotate counterclockwise the CC adjustment (2) and (17) to minimum,
then connect the required load, again adjust clockwise adjustment (2) and (17) till output current
reach the required current value. At this time, the CV state indicator (3) and (12) go out and the
CC state indicator (1) and (11) light on.
2.2.1.4 Used as the CV output, in general the CC adjustment (2) and (17) should be set to maximum, but
for this unit, the current-limiting protection point can also be set arbitrarily.
Setting procedure: turn on power, rotate counterclockwise the CC adjustment (2) and (17) to
minimum, then make the positive and negative output terminal in short connection and rotate
clockwise the CC adjustment (2) and (17) till output current equal to the required current-limiting
protection point, so the current-limiting protection point is well set.
2.2.2
Series using of the two adjustable outputs
2.2.2.1 Switch (9) is set to spring out and press in switch (7). At this time, turn the master voltage
adjustment (14) and the slave out voltage tracks strictly the master output voltage, and the output
voltage can be up to double of independent’s maximum voltage (voltage between terminal (18)
and (23)).
2.2.2.2
Before the series connecting, it must be examined if the negative terminal of both master and slave
output are connected to case grounded terminal, if they are, must be disconnect, otherwise, short-
circuit will be caused in the slave output when the two outputs are connected is series.
2.2.2.3 When the two outputs are in series, the voltage is controlled by master output, but current
adjustment of two outputs is still independent. Therefore, attention should be paid to the position
of the CC adjustment (2). For example, knob (2) is at the position of counterclockwise to end or
current of slave output excesses current-limiting protection point, at this time, the voltage of slave
output will not track the voltage of master. So knob (2) should be rotated clockwise to maximum
then the two outputs are in series.
2.2.2.4 By series connection, if there is power output, proper leads corresponding to output power should
be used to short connect the negative terminal of master output with positive terminal of slave
output reliably. Since it is shorted by
a switch inside the unit, current will pass on the shorted switch when there is power output. This
will affect the reliability of the unit.
2.2.3
Parallel using of the two adjustable outputs
2.2.3.1
Press in switch (9) as well as switch (7), at this time, the two output are in parallel, adjust voltage
adjustment (14) of master output, the voltage of two ways keep same, and slave output CC
indicator (1) lights on.
2.2.3.2
When the two outputs are in parallel, the CC adjustment (2) of slave output does not work. When
used as CC supply, simply adjust the CC adjustment (17) of master output, at this time, output
current of both master and slave are controlled by it and are same, output current is up to double of
independent’s maximum current.
2.2.3.3
While the two outputs in parallel, proper leads corresponding to output power should be used to
short reliably the two positive terminal and the two negative terminals of master, slave output
separately, so as to make load connected reliably with the two parallel outputs. If the load is only
connected to one of the output terminals, unbalance may be caused to current of the two outputs,
this may also damage the series/ parallel switch(7)(9).
