Hobby Electronics Basics

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Simple LM3914 Question

Hi all , i have a circuit with two LM3914 ICs and 20 LED the input of the 3914 is 2v (not starting from zero) to 7 volt...
1 comments posted 21yrs
posted by ahonda55
1 comments posted 21yrs posted by ahonda55

igniter testing

I was looking thru teggar's igniter (ignition module) test and noticed a contradiction in reference on this line, "The...
4 comments posted 21yrs
posted by ECUguy
4 comments posted 21yrs posted by ECUguy

Looking for part name

I need to build a custom electrical connection for a hobby project. Back in the days when I used to help build cable, w...
2 comments posted 21yrs
posted by faceman28208
2 comments posted 21yrs posted by faceman28208

Constructing ab' with a NAND

I'm designing a small alarm-circuit for a veroboard and I've run into a problem that I hope anyone can help me with. The...
8 comments posted 21yrs
posted by bos
8 comments posted 21yrs posted by bos

Quick Regulator Question

I'm going to run a camcorder viewfinder and a digital camera off a ~7v camcorder battery. They will be needing 5v and 3...
8 comments posted 21yrs
posted by eas6
8 comments posted 21yrs posted by eas6

AND/Logic Questions

Hi, I'm reletively familiar with electronics, and I'm trying to find some information regarding implementing logic into...
4 comments posted 21yrs
posted by trevormcg
4 comments posted 21yrs posted by trevormcg

Motor controller question

Hi. I've taken apart an old laserjet printer and I want to use the high-speed motor that the reflects the laser. Here's...
4 comments posted 21yrs
posted by soupisgoodfood
4 comments posted 21yrs posted by soupisgoodfood

Audio OpAmp Gain values

Hi all, I hope no one will mind if I jump in and ask a bit of a beginner's question. The circuit below is from the firs...
7 comments posted 21yrs
posted by mark349
7 comments posted 21yrs posted by mark349

Switching 800mA at 10Mhz?

I am attempting to switch an 800mA load at 10Mhz (e.g.with a square wave). I started with an assortment of BJTs and FET...
5 comments posted 21yrs
posted by sonnichs
5 comments posted 21yrs posted by sonnichs

Graphical procedure to establish the quiescent point

Where I can find the articals related to following title? Please tell me the answer of this question or tell me the web...
4 comments posted 21yrs
posted by ajinkyakulkarni87
4 comments posted 21yrs posted by ajinkyakulkarni87

Weird audio experience

Hi all, Sorry for the crossposting, but I didn't quite know where to send this. I had a weird experience yesterday and...
11 comments posted 21yrs
posted by vivianepb_
11 comments posted 21yrs posted by vivianepb_

Wind generators?

--I've got a couple of Lemco motors laying around and I got to wondering: would one of them make a decent generator if...
0 comments posted 21yrs
posted by steamer
0 comments posted 21yrs posted by steamer

Question about circuit

Hi all , this is a tachometer circuit in this page.. Please see it .. http://www.niksula.hut.fi/~mdobruck/siililand/min...
4 comments posted 21yrs
posted by ahonda55
4 comments posted 21yrs posted by ahonda55