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TTi has enhanced its best-selling CPX400 laboratory dc power supply by
extending its voltage range to 60V.
The new model, designated CPX400A retains the 840 watt power capability
of the CPX400, but can supply up to 60 volts instead of the 42 volts
maximum of the previous model.
The TTi PowerFlex design offers a constant-power capability allowing
higher output current at lower output voltages. A conventional bench PSU
has a fixed current limit giving a power capability that reduces
directly with the output voltage. The design of the CPX400A enables
higher currents to be generated at lower voltages within an overall
power limit envelope.
Each output can provide 60 Volts at a maximum current of 7 Amps. As the
voltage setting is reduced the output current capability increases up to
a maximum of 20 Amps. This is achieved by using a mixture of switch-mode
and linear technologies. Special techniques are used to achieve noise
and RFI figures comparable with good linear PSUs. As a result the
CPX400A can be used with confidence in sensitive environments.
The CPX400A is a dual output PSU with two completely independent and
isolated outputs each with a 420W capability. The outputs operate in
constant voltage or constant current mode with automatic crossover and
mode indication. Each output has its own on-off switch. If required, the
outputs can be wired in series or parallel to achieve voltages up to
120V or currents up to 40A.
The PSU offers a choice of remote or local sensing selected via a front
panel slide switch. Remote sensing is essential for users of higher
current power supplies who need to ensure good regulation at the load,
independent of connection leads.
The new PSU is designed and manufactured to meet the latest safety and
EMC standards.
Comprehensive protection includes an adjustable over-voltage trip for
each output. This can be accurately set anywhere in the range 3.5V to
67V.
The CPX400A is housed in a compact and robust steel case which is
half-rack width and takes up very little bench space. The size is 210 x
130 x 350mm, and the weight is 7kg.
The CPX400 costs £810 in the UK and
1220 Euros in Continental Europe
The approximate International price is $1,55 0.
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