INTRODUCIION
Tbe B & K-hecisi@ Model 1660 Triple
Output DC Powe! Supply is a higb quality,
genela.l purpose dc power soulce. It provides
two supplies with a 0-30 volt dc output and
ong with a 4-6.5 volt dc output. The 0-30 v
supplies are adjustable with both coarse aJId
fine voltage contlols for precise settability
and are capable of current output of
0-2 arops. The 4-6.5 v supply has a current
output of 0-5 a.Eops,allowillg it to hanille ex-
tensive digita.l Iogic circuitry. Two la.rge
palel-Eoormted LED oete! displays caD moEi-
tor eithe! the output curtent or output voltage
o{ each supply.
The two 0-30 volt supplies can be opelated
independendy or in one of two tlackilg
r:oodes. In the selies tlackilg Eode, the Slave
supply tracks the voltage of the Ma.ste!
supply, MaxiEuo curlent settidg of the two
supplies can still be set independently \rhen in
the selies tlackitrg operating 6ode, In the
seri€s tlacking mode the Maste! aIId Slave
supplies a.!e connected in se es, allowing a
singie output of 0-60 V at up to 2 aDcps.In the
patallel tlacking Eode, the two supplies ale
connected together iD parallel, allo\ring a sin-
gle 0-30 V output at up to 4 amps.
Both 0-30 volt supplies may be used itr
constant voltage o! constart cutrent appli-
caiioDs. The clossove! floB constant voltage
to constant cu.!!ent modes is sEooth a.nd
autoEatic. LED'S indicate tbe "CV' (coDstant
voltage) or "CC" (corBtant cu!!e!rt) l3ode of
operation. In constart voltage applications, a
curlent limit loay be preset, when load va-ri-
ations cause the c{rlent to reach the preset
lioit, the unit then regulates output cu!]ent
lathe! tha! output voltage. Cullent liloits are
adjustable frorD 5% to 10070oI b:axixouEr. IrI
constant current applications, the rDaxirDurD
voltage may be preset. When load valiatioas
cause cuJrent to dlop below the legulated
value, the unit reverts to legulated voltage
oDeration at the Dreset value,
allows tbe supply to be used for large ci!-
cuits, Built-in ovelload protection auto-
matically liEits to cutiebt output to a Eaxi-
loull] of 5 aEps. An indicato! lights when the
supply is ovelloaded,
The Model 1660 exhibits excellent regu-
Iation ard low pple charactelistics. The ciF
cuit design incolpolates a pre-legulato!, whic-h
greatly leduces intelnal powe! dis6ipation at
low output voltages.
Revetse polarity protection plevents acci-
dedtal daEage to the poi/ef supply lroE iE-
ploper coDnection to a.aextelnal voltage, and
curreat lioitilg plotects the equipEeDt being
powered, as weII aEthe power supply.
The output is isolated flou chassis alrd
earth glound, which p€lmits full flexibility of
comections. Wbed needed, the (+) o! (-) po-
Iality llay be stlapped to glound, o! either
polarity !!ay be floated to an extelnal vol-
tage. Additiona.Uy, the two 0-30 volt supplies
can be used as a "split supply" with two posi-
tive voltages and a comDon negative, two
aegative voltages and a cotDllon positive, or
one positive, otrenegative, and a cor!6on. AII
of these coiligurations ca]l be used with eithe!
datching (tlacking) or dif f
eling {independent)
voltages.
The features aJId versatility oI the unit,
especially tbe triple output and tracking
featues, make it an ideal genefal purpose
powe! supply for engineering lab appli-
catioas. It can serve as a single o! multi-
voltage powe! source, including tbe bias suF
ply, fo! breadboard and Fotot]?e circuits and
equipEent. It can provide single o! sillul-
taneously valying voltages for ctcuit eva.lu-
ation. It can provide tracking (+) and (-) vol-
tages fo! evaluating diffelential aEplifiers. It
may be used as a battery eliminator, or to
power individual circuit boalds o! caril6 while
temoved llom the systeh, Its output ca'I be
evafuated vrhile poweling a bleadboald or
Drototv'De cilcrdt to determine the cilcuit's
The 4-6,5 V supply is ideal for powering
digital logic circuitly, The 0-5 allp capacity
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