Power Supplies
The electrical power is almost exclusively generated, transmitted and distributed in the form of ac because of economical consideration but for operation of most of the electronic devices and circuits, dc supply is required. Dry cells and batteries can be used for this purpose. No doubt, they have the advantages of being portable and ripple free but their voltages are low, they need frequent replacement and are expensive in comparison to conventional dc power supplies.
Dc Regulated Power Supply
| Model/Series | Output |
| 515S | +5V/1A, +/-15V/1A |
| 525S | +5V/2A, +/-15F/2A |
| S55S | +5V/5A, +/-15V/A1 |
| 3021 | 0-30V/1A, +/-12V/1A.+5V/1A |
| 3022 | 0-30V/2A. +/-12V/2A.+5V/2A |
| 30SS | 0-30V/2A. +/-15V/1A.+5V/5A |
| 3021 | 0-30V/1A. 0-30V/1A.+/-5V/1A |