Hobby Electronics Basics

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4 Channel Digital Storage Attachment

The following link has a circuit which is a 4 Channel Digital Storage Attachment. http://www.users.bigpond.com/vk3jaj/l...
0 comments posted 22yrs
posted by rsnyder187
0 comments posted 22yrs posted by rsnyder187

using a 7809 voltage regulator

I have a KA7809 voltage regulator. I have a couple of buffering caps from the Vin to ground (1uF and .22 uF) and from V...
8 comments posted 22yrs
posted by anonymous
8 comments posted 22yrs posted by anonymous

Biasing ADC input

I have a AD594 temp sensor (~10mV/C output) connected to the 10bit ADC on an AVR. The sensor output will be -375mV to +...
1 comments posted 22yrs
posted by none
1 comments posted 22yrs posted by none

LCD screen installation help

I'm working on a project to install a car computer in my car. The next step is to put the LCD screen in the dash. I rem...
2 comments posted 22yrs
posted by warnockmREM
2 comments posted 22yrs posted by warnockmREM

What is the symbol for a incandecent light bulb?

Seems simple enough. I know there are several popular ones. But what is the one the ISO or the IEEE say it is? And why d...
0 comments posted 22yrs
posted by lordegg43
0 comments posted 22yrs posted by lordegg43

proximity sensor reccomendations ?

Hello All, I'm looking for a IR emitter/receiver combo that could easily be integrated to a microcontroller.. This proj...
1 comments posted 22yrs
posted by slkr
1 comments posted 22yrs posted by slkr

Need help: headers and connectors for LEDs

I would like to make a light display with many LEDs connected by wires of various lengths. I would like to use some sor...
1 comments posted 22yrs
posted by duanewood
1 comments posted 22yrs posted by duanewood

how does bypass capacitor work?

Hi: how dose bypass capacitor filter out the noise on the signal? say i have a 74HC74 chip... with a bypass capacitor c...
10 comments posted 22yrs
posted by kelvin604
10 comments posted 22yrs posted by kelvin604

DC power to small AC motor?

Hi - I am hoping someone can help me.... I have some small "Christmas light turners" (the kind you replace a light in y...
6 comments posted 22yrs
posted by seppspenlinhauer
6 comments posted 22yrs posted by seppspenlinhauer

Peak Reading Voltmeter

Is it possible/reasonable to build a peak reading voltmeter for 100 to 120 volt (RMS) near sine wave? The application i...
2 comments posted 22yrs
posted by atrei
2 comments posted 22yrs posted by atrei

Wire wrap layout software

Looking for software (Win) to do wirewrap layouts for hobbyist projects. I've Googled to no avail. alan
5 comments posted 22yrs
posted by alan
5 comments posted 22yrs posted by alan

Advice Please: LCD Timer Project

I need what will basically be a digital stopwatch. It will need to be an accurate LCD timer/clock that can record a hug...
6 comments posted 22yrs
posted by Searcher7
6 comments posted 22yrs posted by Searcher7

Multiple Power Strips Connected In Series

Hi, I've known this was 'taboo' for as long as I can remember. What I'd like to know is why is it a bad idea to connect...
5 comments posted 22yrs
posted by stuffduff
5 comments posted 22yrs posted by stuffduff

Watts/Heat relationship (dumb question)

Suppose that I have a light bulb consuming 100 watts, a radio also consuming 100 watts and an electric heater also cons...
13 comments posted 22yrs
posted by nospam
13 comments posted 22yrs posted by nospam