Hobby Electronics Basics

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How do I protect my design from being RIPPED OFF?

I devised a unique electronic product which I sell on eBay. Sometime ago someone "reverse engineered" my circuit and pr...
20 comments posted 19yrs
posted by royalmp2001
20 comments posted 19yrs posted by royalmp2001

LED brakeLight Project - need Help!

Ok - is there any place I can get a tutorial on how to make my own LED brake light? At the moment I'm dreaming big and...
7 comments posted 19yrs
posted by chull13
7 comments posted 19yrs posted by chull13

Transformer question - I'm puzzled

Honeywell's published documentation for their R182C switching relay http://customer.honeywell.com/techlit/pdf/95-0000s/...
13 comments posted 19yrs
posted by spambait
13 comments posted 19yrs posted by spambait

Thanks

Thanks to everyone for the suggestions. The PICAXE sounds very interesting. I've been reading the manual and it looks f...
1 comments posted 19yrs
posted by mperline
1 comments posted 19yrs posted by mperline

Bowden's BCD clock circuit

I've decided to build a BCD clock and after searching for a circuit I've decided on Bill Bowden's circuit. http://ourwo...
15 comments posted 19yrs
posted by ask
15 comments posted 19yrs posted by ask

which CMOS pins to ground?

Hey all; I'm experimenting with a CMOS analog switch (MAX4662). It's got 4 switches in it and can be run on +/- or sing...
3 comments posted 19yrs
posted by toccata
3 comments posted 19yrs posted by toccata

total newbie question regarding eproms

please bear with me cos i know zip about all things electronic Does anyone know where I can source approx 50 of the fol...
2 comments posted 19yrs
posted by london_bug
2 comments posted 19yrs posted by london_bug

24V to 5V

I need to convert a 24V source to 5V / 1.0 A max output. I tried using a 7805 but it generates alot of heat. Is there a...
11 comments posted 19yrs
posted by dmserame
11 comments posted 19yrs posted by dmserame

Focal length in pixels

Hey any body out there who can help me transform focal length in mm to focal length in pixels. to be precise am trying...
2 comments posted 19yrs
posted by orelza
2 comments posted 19yrs posted by orelza

"Overclocked" frequency and Power dissipation

What is the relationship between the "Overclocked" frequency on a CPU and its power dissipation? Thx
6 comments posted 19yrs
posted by lucky7456969b
6 comments posted 19yrs posted by lucky7456969b

flash LED newbie question

I want to build a timer which, when activated, causes an LED to flash (approx 0.5 to 1 hz, but the precise frequency is...
10 comments posted 19yrs
posted by mperline
10 comments posted 19yrs posted by mperline

12v dc power distribution circuit

Hi I'm building a circuit bent instrument with several circuits in it. I want to run them all off one power supply rath...
4 comments posted 19yrs
posted by carbohydrat.protein
4 comments posted 19yrs posted by carbohydrat.protein

Question about vu meter

I have a question about the circuit http://www.velleman.be/downloads/0/manual_mk115.pdf This circuit was as follows, wh...
4 comments posted 19yrs
posted by hc04
4 comments posted 19yrs posted by hc04

Question about led flasher circuit

I want to build some circuits from http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm About 1/3 down there...
3 comments posted 19yrs
posted by hc04
3 comments posted 19yrs posted by hc04