Search found 4 matches

by kroll
Thu Jan 08, 2004 4:28 pm
Forum: General Discussion
Topic: Switching Power Supply?
Replies: 2
Views: 780

Switching Power Supply?

Hi Group,<p>I need a 12v regulated power supply at 1 or 2 amp min capicity in a audio circuit. I found a 12v 1.66A regulated (switching) power suppy at All Electronics for $8.50. This is cheaper than buying parts to build with cost of transformer.<p>Will a switching power supply add extra noise in c...
by kroll
Fri Dec 26, 2003 4:50 pm
Forum: General Discussion
Topic: LM3914 Help??
Replies: 6
Views: 1382

Re: LM3914 Help??

Sorry,
I meant to say a micro-amp meter. 250-0-250 center scale.
Thanks-
by kroll
Fri Dec 26, 2003 10:19 am
Forum: General Discussion
Topic: LM3914 Help??
Replies: 6
Views: 1382

Re: LM3914 Help??

The lightning circuit has pos & neg power supply leading to the output.I am wondering if the zero center 20 seg. leds off of the LM3914 will substitute for the pos-neg uf meter in original circuit?In other words will it show pos-neg responses as would the zero center meter?
by kroll
Thu Dec 25, 2003 6:15 pm
Forum: General Discussion
Topic: LM3914 Help??
Replies: 6
Views: 1382

LM3914 Help??

Hello,<p>I want to use on page(9): http://hallbeng.jlab.org/datasheets/LM3914.pdf (Zero-Center Meter 20 segment)<p>I want this to show output, instead of 250-0-250uf meter used in a lightning project for pos.-neg. responses.<p>Will this zero center meter work or is only for positive voltages?? Thanks.