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TTi have launched a dual output version of their new PL series linear
regulated power supplies. The PL303QMD is the latest model in the New PL
series of ultra low noise, and ultra compact PSUs which replace the
original PL series.
Mark Edwards, sales director of TTi, commented:
“Despite the improvements in the performance of switch-mode based
laboratory power supplies, demand for linear regulated models remains
very strong, driven by the needs of low voltage circuitry and RF
technology. The original PL quad-mode dual has been one of this
company’s most successful products, and I expect the advanced features
of the new model to expand the market further”.
Housed in a half-rack (212mm wide) casing, the PL303QMD has two
identical outputs of 0 to 30 volts at 0 to 3 amps and uses significantly
less bench space than other linear regulated PSUs of similar power.
Voltage and current are set using true analogue controls, but the
settings can be locked at the touch of a button using the S-Lock
function. The span of the analogue controls can also be changed using
the V-Span feature.
Linear regulation provides noise of below 0.4mV rms with low peak to
peak excursions and low common mode noise current. This ensures that the
PL303QMD can be used in environments where many conventional power
supplies would be unsuitable.
Quad-mode switching offers four modes of operation which include a
single output mode in which all 180 watts of power is provided on one
output of 0 to 30V at 0 to 6A.
In dual modes, the two outputs are always electrically isolated and can
be set to be fully independent control or master-slave control with a
fixed or variable ratio between the two outputs. Output isolation of
these tracking modes enables the user to create two rails of either
polarity and to reference them to different grounds if necessary (e.g.
digital ground and analogue ground) offering maximum flexibility.
In addition to the individual switches for each output, switches are
also provided to allow both outputs to be turned on or off synchronously
by a single button press. Synchronous switching of the outputs is of
increasing importance for circuitry which can be damaged if one voltage
rail is present without the other.
The price in the UK is £499.
The approximate International prices is $1,000.
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