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 132 VAC, 47 to 500Hz, 10A RMS 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: 1mV RMS 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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