Comments on: Short-Circuit Protection in DC Low-Voltage Systems

By: Alaiyelumo david gbenga

Alaiyelumo david gbenga — Mon, 07 Nov 2011 12:37:17 +0000

Your comment

By: Alaiyelumo david gbenga

Alaiyelumo david gbenga — Mon, 07 Nov 2011 12:36:07 +0000

Thanks i need an improvement on this short circiut diagram and the amps to be carried.

By: vamshi

vamshi — Sun, 28 Aug 2011 14:04:16 +0000

i want more information on this topic..and also some applications on this circuit

By: Zabrina

Zabrina — Fri, 01 Jul 2011 16:52:55 +0000

You keep it up now, undertsand? Really good to know.

By: Mark

Mark — Tue, 19 Apr 2011 22:30:53 +0000

Hello, Anu (or anyone). I have an Eagle layout for this circuit for anyone who wishes. Send email: mscohen(at)ucla.edu

By: Mark

Mark — Tue, 19 Apr 2011 17:48:13 +0000

Anu: I can give you pc layout. It hardly seems worth it for a circuit this simple, however. In my application I intend on using a 3904 and a 3906 (’cause I have them in a drawer).

By: Mark

Mark — Tue, 19 Apr 2011 17:12:19 +0000

Just FYI: O/P2 will be more like 4.4V, because of the C-E saturation voltage of 0.6 V on the SK100. Also note that hfe has a broad range from 40 to 300, so the safety factors are only a rough guideline. Using a 2n3906 instead of the SK100 improves this behavior somewhat, as the hfe is a minimum of 100 and the C-E sat is more like 0.4 V. However, output current must not exceed 200 mA.

By: Mark

Mark — Tue, 19 Apr 2011 16:42:14 +0000

Forgive this question, please, but why is R4 needed? Presumably the current path through R5 is adequate…

By: anu

anu — Tue, 22 Feb 2011 09:06:35 +0000

need the PCB layout design for this circuit

By: NAG

NAG — Sun, 09 Jan 2011 19:52:10 +0000

want to know about the applications and features of SHORT CIRCUIT PROTECTION IN DC LOW VOLTAGE SYSTEM