Hobby Electronics Basics

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Broken Voltage Selector on Pioneer A/V Receiver

I have a Pioneer VSX-3600 A/V receiver. It has two voltage selectors, one being a slide switch (110V - 220V) and the ot...
2 comments posted 21yrs
posted by oy
2 comments posted 21yrs posted by oy

Faulty temperature sensor

Hello, I would like to check out a temperature sensor for my central heating cylinder. 2 cables coming from the sensor....
2 comments posted 21yrs
posted by jbauer
2 comments posted 21yrs posted by jbauer

SRAM 'OE' pin query

Okay, just showing my ignorance here ...... the OE signal is an input. The OE pin (22) on a 41256SJ surface mount (J-Le...
6 comments posted 21yrs
posted by mjones98
6 comments posted 21yrs posted by mjones98

Slightly OT-Wireless Card Problem

Whenever I attempt to add a internal Wireless Network Card into my computer (Windows XP) my computer "dies". It does tu...
1 comments posted 21yrs
posted by ksleep
1 comments posted 21yrs posted by ksleep

Is this a hex inverter?

I have a (1996) PCB with a 50MHz oscillator connected to a 14-pin SMT device, marked as: 7C1T AC14 It's a Hitachi part....
2 comments posted 21yrs
posted by mjones98
2 comments posted 21yrs posted by mjones98

Question About AC vs DC Rocker Switch

I need some advice from an expert in the forum. Can I use a 120VAC rocker switch with 12VDC current? The switch will be...
1 comments posted 21yrs
posted by jschreifels
1 comments posted 21yrs posted by jschreifels

probe attenuation

Hello, I received my oscilloscope yesterday -- a tek 465b/dm44. Pretty nice machine, and I'm cluing myself in on how to...
5 comments posted 21yrs
posted by no_spam
5 comments posted 21yrs posted by no_spam

Back EMFs

Hi group, If I interrupt the current supply to a large coil, what determines the level of back emf I can get? I'd imagi...
8 comments posted 21yrs
posted by mark1889
8 comments posted 21yrs posted by mark1889

Finite Element Analysis

Can somebody recommend a good book to study Finite Element Analysis. This will be my first time studying this subject an...
1 comments posted 21yrs
posted by genenamg
1 comments posted 21yrs posted by genenamg

Fast soldering techniques

A while ago I was working with an older engineer developing some boards for my old college. He kept saying how easy it...
4 comments posted 21yrs
posted by bahremu
4 comments posted 21yrs posted by bahremu

Bike Helmet-Mounted Speakers

Hi all. I'm a nyc bike messenger. I want to listen to music while I work, on a cd or mp3 player, but I don't want to we...
5 comments posted 21yrs
posted by jkr222
5 comments posted 21yrs posted by jkr222

heater circuit

I need to control a simple heating element which will run off 12Vdc. It does not need to get very hot. I need to make i...
3 comments posted 21yrs
posted by pil
3 comments posted 21yrs posted by pil