Hobby Electronics Basics

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Beef Jerky Machine

Hello all, I am wanting to build a copy of a dehydrator that an instructor at the local Vo-Tech uses. It is nothing mor...
10 comments posted 19yrs
posted by guitchess
10 comments posted 19yrs posted by guitchess

More beginner questions (digital multimeter)

I know to start manually on the highest scale and work your way down when using it on unknown voltage etc (or use AUTO...
5 comments posted 19yrs
posted by spammenot
5 comments posted 19yrs posted by spammenot

VSWR doesn't matter?

We are all told that VSWR doesn't matter when using low loss transmission lines, since the RF energy will travel from t...
61 comments posted 19yrs
posted by billcalley
61 comments posted 19yrs posted by billcalley

Need help with Infrared Detector circuit

Hi - I'm a digital electronics guy with what is probably a simple analog electronics problem. Please help educate the c...
3 comments posted 19yrs
posted by davepublic1
3 comments posted 19yrs posted by davepublic1

555/556 TIMER

I'm using a 556 Timer and want to do the following with it: When the external Mercury switch of the 1st timer on the 55...
6 comments posted 19yrs
posted by piscatory
6 comments posted 19yrs posted by piscatory

Over voltage protection circuit suggestions?

Hello, a couple of us on the pinball newsgroup have been wondering about a design for an over voltage protection circui...
4 comments posted 19yrs
posted by biscuitbecks
4 comments posted 19yrs posted by biscuitbecks

measuring jug for the blind

hi all! my project is to build a measuring jug for the blind.this jug can sense certain water level for example at 250m...
9 comments posted 19yrs
posted by med_qwerty
9 comments posted 19yrs posted by med_qwerty

ac to dc conversions

Hi, I am trying to convert a stereo which uses 12 volts ac current, to run off of a 9.6 volt dc remote control car batte...
4 comments posted 19yrs
posted by joshmixster
4 comments posted 19yrs posted by joshmixster

New Electricity

New Electricity Magnetic Field Due to Current The model proposed by Maxwell that relies on the current loop and is work...
1 comments posted 19yrs
posted by me
1 comments posted 19yrs posted by me

Sansui 9090

Hello All; I have a Sansui 9090 since I bought it new. Other then a few small problems with it over the 30+ years I hav...
4 comments posted 19yrs
posted by Sparky747
4 comments posted 19yrs posted by Sparky747

556 Timer

I'm very new to this elecrronic stuff, but I was able to do what I needed with the 555 timer, but I am lost with trying...
1 comments posted 19yrs
posted by piscatory
1 comments posted 19yrs posted by piscatory

Laser pointer power requirements?

Does anyone know what kind of current a 4.5 volt laser pointer needs to draw? It's for a somewhat stupid project. Where...
47 comments posted 19yrs
posted by die
47 comments posted 19yrs posted by die

Video select logic with Multiplex IC?

I'm working on a circuit for my Atari ST computer which allows for different monitors/TVs to be used, but I'm stuck whe...
0 comments posted 19yrs
posted by sixteen_thirtytwo
0 comments posted 19yrs posted by sixteen_thirtytwo

Book recommendations

I have had some Electrical Engineering 101-style classes in college as part of the CS degree. However, there is lots of...
12 comments posted 19yrs
posted by grubertm
12 comments posted 19yrs posted by grubertm

Jacobs Ladders & Stacking Transformers?

I've build a Jacob's Ladder with an old "Franceformer". The specs are: Input; 120 volts - 60 Hz. Output;14,000 volts- 3...
6 comments posted 19yrs
posted by kcbjordan
6 comments posted 19yrs posted by kcbjordan