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 |
