Products
MODEL 850A AC/DC LINEAR POWER SUPPLY
Description
The Model 850A is a tightly-regulated single output linear power supply for applications requiring low ripple and noise. Large heatsinks and fans inside the unit provide cooling. Two flow sensors in the air path provide an alarm signal if either fan stops.
The Model 850A is a direct replacement for the Model 850. It uses modern technologies providing voltage regulation and output ripple parameters exceeding the original specifications.
Specifications
Input: 105 to 132 VAC 46.5-67Hz, 10A RMS at full load
Output: 23VDC ±2VDC at 0-12ADC
Regulation: 0.01% plus 1mV over line variations 0.02% plus 2mV over load variations Ripple: 3mV peak-peak
Sensing: Remote sensing regulates voltage at remote load point
Cooling: Two cooling fans with airflow sensors
Protection: Overcurrent Output electronically current limited at 18ADC, with foldback to less than 6ADC at short circuit Overvoltage If output exceeds 5V over nominal, crowbar SCR clamps supply to zero Input fuse 15A slow blow
Front panel: 15A fuse for input line Output voltage adjust trimpot Output overvoltage adjust trimpot Overvoltage reset pushbutton Testpoints for output voltage monitoring Mechanical: 23" wide (rack mounting) x 8" high x 10" deep
