New high-stability, low-noise silicon semiconductor

devices and advanced solid-state circuit technology

are the basis for this unusually stable voltage reg-

ulator.

The improved performance of the Model 2005 per-

mits dial readout of the output voltage to five places.

Interpolation of the last place is provided by a poten-

tiometer with a resolution of 10 microvolts.

Conventional, more complex chopper techniques for

DC amplifier stabilization are avoided by maintaining

critical amplifier stages and a specially processed

zener diode voltage reference in a temperature-con-

trolled oven.

The design simplicity results in a low-cost unit, half

the size and weight of comparable instrumentation.

Design Features of the Model 2005P

•

Calibrated decade voltage readout to four signi-

ficant figures at outputs below 10 volts, to five

significant figures above 10 volts. Interpolation

of the last place is provided by a potentiometer

with 10-microvolts resolution.

•

Provisions for rear-panel zero calibration (may

be used to offset lead drop during remote sens-

i ng).

•

Adjustable current limiting.

•

Self-restoring electronic overload and short-cir-

cuit protection.

•

All silicon-semiconductor regulator system.

•

Critical semiconductors and components main-

tained at constant ambient in temperature-con-

trolled oven.

•

Accurate remote programming at 1000 ohms-per.

volt.

•

Front and rear access to output terminals.

•

100 hour pre-aging of power supply before test

and calibration. Individual calibration data fur-

nished with each unit.

•

Line and load circuits separately fused. Acces-

sible at rear. Performance specifications based

on anticipated ratings after 5 years service.

•

“Controlled-Parameter” semiconductor program

insures long life expectancy. Features “controlled

avalanche” silicon rectifiers and power transis-

tors, pre-aged zener voltage references and tran-

sistors, noise-testing techniques for establishing

predictable device reliability, derating to 50%

of rated voltage and current, etc.

•

Modular package construction suitable for rack

mounting. Single or dual mounting in 5¼”x 19”

panel. See Cat. RPA-62 for rack panel adapters.