Products

MODEL 842B INSTRUMENTATION POWER SUPPLY

Description

The Model 842B is a tightly-regulated single output linear power supply for applications 
requiring low ripple and noise. Heatsinks on the rear of the supply provide adequate
convection cooling for operation without the need for fans. 

The Model 842B is a direct replacement for the Model 842. It uses modern technologies
providing voltage regulation and output ripple parameters exceeding the original specifications.

 

Specifications

Input:

97 to 132VAC, 47 to 500Hz, 10ARMS at full load

Output: 842B-22: -22VDC ±0.5V, 0 to 15ADC
842B-24: +24VDC ±0.5V, 0 to 15ADC
842B-30: +30VDC ±1.0V, 0 to 12ADC
Regulation:

0.1% max. over line and load variations

Ripple:

3mVRMS max.

Sensing: Remote sensing regulates voltage at remote load point
Local sensing regulates voltage at power supply terminals
Protection: Overcurrent Output electronically current limited at 18ADC, with foldback to less than 6ADC at short circuit
Overvoltage If output exceeds 4V over nominal, crowbar SCR clamps supply to zero
Input fuse 10A slow blow
Output fuse 20A fast acting
Overtemperature Thermostat opens input circuit if heatsink temperature exceeds 124°C
Front panel: Analog meters display output voltage and current
Output voltage adjust trimpot
Power-on lamp
Removable subpanel covers operating fuses and holds spare fuses
Mechanical: 19" wide (standard rack mounting) x 3.5" high x 16" deep

 

 



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