|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
|
|
Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
|
In Reply to: 30 amp 12 volt power supply posted by AudioTweaker on November 20, 2000 at 18:16:00:
The regulated, linear type power supply is a must. I have built 13.8VDC power supplies that output 30 amps with about 3mv of AC ripple at full load. I used the L200 regulator. This L200 drives a TIP 35C. The TIP35C drives four (4) 2N5302 transistors. About 7.5 amps load per transistor is maximum safe load with about 4 volts headroom or 17.8 volts at collector for 13.8 volts out at emitter. Now, the trick for ultra low noise is to supply the regulator and driver with about 28-30 volts DC (no load). To stablize the overall circuit gain, install about 1000 mfd capacitor on the output. If you want, I can send a schematic and a L200 regulator. Although Astron is one of the better power supplies available, this design will 'stomp' it. Jim
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: 30 amp 12 volt power supply - JIMMY 08:39:42 11/22/00 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]
