Hobby Electronics Basics

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Help on DPDT wiring

Hi, I have a DPDT toggle switch, and I like to give two inputs to it (AC and DC) . by toggling the switch to AC I like...
4 comments posted 21yrs
posted by ketaber
4 comments posted 21yrs posted by ketaber

Help with Logic Circuit

I am a new to this group but Can anyone help I need to make a logic circuit that lights a single LED when a BCD counter...
14 comments posted 21yrs
posted by John
14 comments posted 21yrs posted by John

Shock Pen (Shocking Device) Please help!

the thing i want to do is a Shock Pen if you don't know what a shock pen is just follow the links (If you don't want to...
20 comments posted 21yrs
posted by RedShift.Ink
20 comments posted 21yrs posted by RedShift.Ink

Light from antena?

If light is part of the same spectrum and waveform as radio waves and radio waves can be transmitted through an antena...
16 comments posted 21yrs
posted by ngdbud
16 comments posted 21yrs posted by ngdbud

SiC Technology

I have recently started working on application of SiC technology in VLSI application, but unfortunately I couldn't find...
1 comments posted 21yrs
posted by atul.ee
1 comments posted 21yrs posted by atul.ee

Audio buffer output

I have a multipart question for purposes of a self-tutorial. Some of this "esoteric" audio information can drive you nu...
5 comments posted 21yrs
posted by newszz10
5 comments posted 21yrs posted by newszz10

Regulator for radio controlled model question

I've got a question about the Adjustable-Voltage Regulator LM317T or similar. I'm looking to build a small simple light...
2 comments posted 21yrs
posted by robot
2 comments posted 21yrs posted by robot

VHF Remote Radio Questions

Howdy all, I want to move a base station of a mobile radio system to a remote location where I hope to get better cover...
5 comments posted 21yrs
posted by nannerbac
5 comments posted 21yrs posted by nannerbac

Which Drill Press for PC Boards?

Recommend a drill press for drilling PC board holes, please. I drill boards about 3x2" with maybe 40 holes, maybe a doz...
9 comments posted 21yrs
posted by lumpy
9 comments posted 21yrs posted by lumpy

Get started in Electronics book for 14 year old

Hi Can anybody recommend a good "Get Started In Electronics" book set at a level suitable for an intelligent 14 year ol...
8 comments posted 21yrs
posted by NoSpam
8 comments posted 21yrs posted by NoSpam

Measuring Impedance of a wall socket

Hi, I was wondering if anyone could help me with a curious question. How would one go about measuring the impedance of...
3 comments posted 21yrs
posted by cyrille.perron
3 comments posted 21yrs posted by cyrille.perron

q:mosfet circuit

http://chrispol.ath.cx:8080/switch.jpg would this be the proper circuit to optically source current to a heavy load? Tha...
4 comments posted 21yrs
posted by chrispol
4 comments posted 21yrs posted by chrispol

PCB Wizard? any positive experiences?

HI all, I bought PC wizard from New Wave Concepts. I've had a lot of problems with crashing, slow tech support and now...
0 comments posted 21yrs
posted by robot
0 comments posted 21yrs posted by robot

PMR Amp and PSU

I have a problem. Just completed a basic LM317 PSU for my PMR (6.5v 200ma) two caps and a couple or resistors etc. The...
3 comments posted 21yrs
posted by Reeferjon
3 comments posted 21yrs posted by Reeferjon