A 30 volts variable power supply with
current limiting control.
 |
| Front Panel |
The power supply is capable of delivering 30
volts at a current rating of 3 Amps. Two numbers of 2N3055 has been used as
pass transistors with regulation control. The current can be restricted to any
desired value by a multi turn pot. Similarly the output voltage also can be
varied from 2 volts to 30 volts. Both controls are mounted in the front panel.
The circuit has short circuit protection. Two digital panel meters have been
provided to indicate the out put voltage and load current. The DPMs have been
powered by a small 5V- 500 ma SMPS unit removed from a mobile phone charger. A 230
volts fan keeps the transistors cool. When ever the current exceeds the set
value, the voltage gets locked and the current limiting is indicated by an
indicator on the front panel.
 |
| Internals |
No comments:
Post a Comment