Hobby Electronics Basics

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LEDs on Model Railroad

I have an N-gauge train with some remote-controlled switch tracks. This is an older style train, not the DCC type. I wo...
4 comments posted 21yrs
posted by srokajj
4 comments posted 21yrs posted by srokajj

Drawing Power from an RS232 Port

I am interested in drawing power from an RS232 port so that it powers an external circuit, only I am not too sure where...
8 comments posted 21yrs
posted by sethier
8 comments posted 21yrs posted by sethier

About Chip Resistors

How do Chip resistors compare to Metal/Carbon film resistors in terms of Noise immunity and Reactance ? Apart from size...
2 comments posted 21yrs
posted by aman.bindra
2 comments posted 21yrs posted by aman.bindra

About Chip resistors

How do Chip resistors compare to Metal/Carbon film resistors in terms of Noise immunity and Reactance ? Apart from size...
0 comments posted 21yrs
posted by aman.bindra
0 comments posted 21yrs posted by aman.bindra

I need help!

I'm trying to work out an dependtent voltage source and the output voltage across a resistor. if you can help me, e-mai...
2 comments posted 21yrs
posted by aj2talbot
2 comments posted 21yrs posted by aj2talbot

Help with 4046 PLL

Hi, I'm having trouble understanding the 4046 PLL data sheet. I want to lock on to a frequency of 200KHz and remain loc...
3 comments posted 21yrs
posted by ed
3 comments posted 21yrs posted by ed

Scope question

Hi All, I'm getting ready to buy an oscilloscope for my own use. I had decided to buy an older refurbished HP 54600A DS...
8 comments posted 21yrs
posted by nospam
8 comments posted 21yrs posted by nospam

rf upconverter

I am new to the newsgroups, so please let me know if I am not following some 'written or unwritten' rules about posting...
1 comments posted 21yrs
posted by snbaer
1 comments posted 21yrs posted by snbaer

Parallel port and Visual Basic?

I am in the process of building a circuit that will monitor the start and finish times for pine box derby cars. I would...
7 comments posted 21yrs
posted by zuckuss
7 comments posted 21yrs posted by zuckuss

12V LED

I am new to electronics and am trying to wire a LED to light up when a 12V fan is on. I understand about using a resist...
6 comments posted 21yrs
posted by bakechad
6 comments posted 21yrs posted by bakechad

A Battery In A Magnetic Field

First off, thanks to all who guided me on the prev. topic of battery combinations for odd voltages. Next, i just have a...
27 comments posted 21yrs
posted by blahbleh666
27 comments posted 21yrs posted by blahbleh666

Opinions about Smart Tweezers Handheld RCL Meter

I would appreciate your opinions about the following device: "Smart Tweezers LCR RCL RLC Meter Digital MultiMeter SMD"...
28 comments posted 21yrs
posted by kolotun
28 comments posted 21yrs posted by kolotun