Hobby Electronics Basics

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Conuctivity of spray lube?

Sorry to clutter the forum with a real basic question, but I have an electronic display piece that needs maintenance. T...
12 comments posted 21yrs
posted by liv2byoung
12 comments posted 21yrs posted by liv2byoung

Two 15 amp circuits joined

I have a odd situation with my christmas lights. I have two intermatic timers in the garage each with its own 15 amp br...
0 comments posted 21yrs
posted by r_cesario
0 comments posted 21yrs posted by r_cesario

light switches

I've been attempting to cut into my power bill at work... I bought a motion sensitive light switch and it says that it...
4 comments posted 21yrs
posted by thefrenchdog1
4 comments posted 21yrs posted by thefrenchdog1

Bright flashing light for fake alarm box?

Hi I bought a fake/empty alarm box for my house, but thought I'd make it look more realistic by putting some kind of pe...
16 comments posted 21yrs
posted by mark.mcgee
16 comments posted 21yrs posted by mark.mcgee

mixing two (possibly) unbuffered audio signals

Im wanting to mix the output of two possibly unbuffered electric guitar outputs. The two signals will be coming from 's...
4 comments posted 21yrs
posted by anonymous
4 comments posted 21yrs posted by anonymous

how do I push a button remotely (second post)

hi, sorry this post may not appear in the thread it should. I only have access to google to post, (no newsserver) and g...
5 comments posted 21yrs
posted by jameshanley39
5 comments posted 21yrs posted by jameshanley39

bell project

Its for when a timer runs out and a relay turns off a light, I would like a bell to ring at the same time. IT can eithe...
4 comments posted 21yrs
posted by thefrenchdog1
4 comments posted 21yrs posted by thefrenchdog1

Multivibrators?

Do we analyse multivibrators and oscillators in the same way, i.e. beta*A = -1 . For example, if we look at the multivi...
7 comments posted 21yrs
posted by kerntoppi
7 comments posted 21yrs posted by kerntoppi

Need help in stablizing a power supply

Hi All, I am working on a home project that needs to supply a 24V power to a brushless motor controller. The motor draw...
5 comments posted 21yrs
posted by everteq
5 comments posted 21yrs posted by everteq

how do I push a button remotely?

I have a device with a button, but the device must remain downstairs and i'm upstairs and remain there for long periods...
5 comments posted 21yrs
posted by jameshanley39
5 comments posted 21yrs posted by jameshanley39

oscilloscope input impedence?

I've got a real dumb newbie question so bear with. I'm running some interconnected amplifiers ect with the required 93...
1 comments posted 21yrs
posted by road12fg
1 comments posted 21yrs posted by road12fg

using a 5v relay with 12v

hello all. I have a simple question. What makes a 5v relay rated at 5v? Is it limited by the voltage or really by the c...
13 comments posted 21yrs
posted by valid
13 comments posted 21yrs posted by valid

Will AA batteries power this solenoid OK?

Hello, I am building a project that uses a wireless RF remote control to momentarily fire a solenoid to release a latch...
4 comments posted 21yrs
posted by scottfuhrman
4 comments posted 21yrs posted by scottfuhrman

Radio attenuation with resistors

I was just wondering, if you have a high frequency radio with an antenna, what would happen if you put a resistor befor...
2 comments posted 21yrs
posted by andypoota
2 comments posted 21yrs posted by andypoota