Hobby Electronics Basics

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Astable Multivibrator

Hello Everyone, I have a project where I am using two gates of a 74LS00 as a astable multivibrator. It works most of th...
8 comments posted 20yrs
posted by NOwaynerrSPAM
8 comments posted 20yrs posted by NOwaynerrSPAM

counting bottles

In our milk bottling plant we would like to have a means of counting bottles as they leave the filling machine on a con...
7 comments posted 20yrs
posted by david
7 comments posted 20yrs posted by david

Will this work?

Hi, I'm an occasional reader of this forum, and I have a question. I want to use a Radio Shack 13.8VDC 15-Amp Power Sup...
6 comments posted 20yrs
posted by mazeville
6 comments posted 20yrs posted by mazeville

Four Smoke Alarms Go Off Almost Simultaneously

(I just tried posting a similar message, but it looks like it got tangled up, so I'm trying again.) The other night wit...
5 comments posted 20yrs
posted by wolf_tracks
5 comments posted 20yrs posted by wolf_tracks

High speed ARM debugger & programmer

Computer Solutions is now supplying the Embest range of ARM Development tools. These include UNetICE, a low-cost, high-...
1 comments posted 20yrs
posted by sales
1 comments posted 20yrs posted by sales

Power camcoder in car?

I have panasonic miniDV camcoder fixed in my car, I need 7.9V to power camcoder from 12V car battery, and I need two le...
5 comments posted 20yrs
posted by hiroc13
5 comments posted 20yrs posted by hiroc13

Pixel Reflector Array for Micro Solar Tower

Has anyone done anything making prisims or reflectors small enough to be oriented electronically like a LCD display? It...
10 comments posted 20yrs
posted by BretCahill
10 comments posted 20yrs posted by BretCahill

blood pressure!

Hello guys, Its my first message to the group!! currently working on builiding Blood pressure monitor and currently wor...
17 comments posted 20yrs
posted by priyanksamani
17 comments posted 20yrs posted by priyanksamani

RF Measurement - Test Case

Hi guys, I'm trying to come out a test case to pass the device that is emitting RF signals. One is of course to measure...
2 comments posted 20yrs
posted by jacky.newsgroup
2 comments posted 20yrs posted by jacky.newsgroup

Please help a student :) ->BCD to 7-segment

hi! i have a question and i hope that you could provide an answer. i got an assigment which goes like this: draw and ex...
1 comments posted 20yrs
posted by zekopeko2
1 comments posted 20yrs posted by zekopeko2

Clock-dependent signal question

In a project, i have a clock-signal and two other signals (A and B). A and B are the opposite of each other - when A is...
11 comments posted 20yrs
posted by bos
11 comments posted 20yrs posted by bos

Batteries

Hi, is there some kind of batteries that cann be shaped like clay. I nead 48 v/10 Ah bateries, specific shape. Somethin...
2 comments posted 20yrs
posted by ddundov_REMOVE_
2 comments posted 20yrs posted by ddundov_REMOVE_

Capacitance for AC coupling?

Hi guys: I have an application where I'm amplifying a small AF signal. It comes from the sensor as an AC signal at a DC...
8 comments posted 20yrs
posted by eromlignod
8 comments posted 20yrs posted by eromlignod

Stepping Motors

Hi, I have Stepping Motor and a controller which has variable speed and a 'Change Direction' push switch. I want to use...
23 comments posted 20yrs
posted by jst3712
23 comments posted 20yrs posted by jst3712

Transistor Replacement

Hello everyone, i am making an intercom whose circuit diagram can be found here: http://www.electronic-circuits-diagram...
5 comments posted 20yrs
posted by h.irfan
5 comments posted 20yrs posted by h.irfan