Hobby Electronics Basics

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I have question about R L Mathematics

I have beads* on a coax and want to know the R and the L. I have measured the R at 3.85MHz, It is 3,350 ohms. I have al...
60 comments posted 12yrs
posted by nojunk
60 comments posted 12yrs posted by nojunk

Broadcast TV format question

I watch some programs on PBS TV that are strangely formatted. The video image is bordered on all 4 sides by black. This...
8 comments posted 12yrs
posted by pconners98
8 comments posted 12yrs posted by pconners98

Max Frequency of SM 118A counter?

Anyone know the maximum frequency of a Heathkit SM-118A? I have been all over Google with little luck. One guy said it w...
20 comments posted 12yrs
posted by nojunk
20 comments posted 12yrs posted by nojunk

LTspice Tutorials now available

LTspice Tutorials now available on the Simulation Tools & Macros page of my website... http://www.analog-innovations.co...
34 comments posted 12yrs
posted by To-Email-Use-The-Envelope-Icon
34 comments posted 12yrs posted by To-Email-Use-The-Envelope-Icon

Solenoid question

Permanent magnet motors put out more HP in a given volume than AC induction motors and DC motors with a wound field. So...
4 comments posted 12yrs
posted by etpm
4 comments posted 12yrs posted by etpm

Fuzzy logic

Fuzzy logic is advanced concept for data processing and analyzing. It is based upon human-like way of thinking and it i...
0 comments posted 12yrs
posted by pchung705
0 comments posted 12yrs posted by pchung705

OT: Wood Staining Question

Staining the wine-glass rack came out looking so nice SWMBO asked if I could stain a kitchen implement holder that's ba...
6 comments posted 12yrs
posted by To-Email-Use-The-Envelope-Icon
6 comments posted 12yrs posted by To-Email-Use-The-Envelope-Icon

Unsolderable wire?

I am trying to solder some RG-6 shield to a pcb. The braid won't tin. It's almost like it's dissipating the heat faster...
71 comments posted 12yrs
posted by bespoke
71 comments posted 12yrs posted by bespoke

Using RF to monitor location (cat)

I'd like find out where my cat is when he is prowling around the neighborhood. My plan is to attach an RF transmitter o...
3 comments posted 12yrs
posted by test
3 comments posted 12yrs posted by test

Why the high price for tube amps?

I have been thinking about making a tube amp for fun so I can compare the sound to a good solid state amp and because I...
44 comments posted 12yrs
posted by etpm
44 comments posted 12yrs posted by etpm

Getting started with Eagle?

So, I've played around a little bit with Eagle Light, and it isn't exactly intuitive. Are there any tutorials/walkthroug...
4 comments posted 12yrs
posted by newsgroup.nospam
4 comments posted 12yrs posted by newsgroup.nospam

Cancelling Only the Noise from Afterburners

Instead of the headphones which cancel all outside sound navy jets could de ploy a microphone under the jet just after...
18 comments posted 12yrs
posted by bret.e.cahill
18 comments posted 12yrs posted by bret.e.cahill

Do SCRs go intermittent?

My space heater using 2 SCRs sometimes goes into half wave operation and the fan turns very slow or stops. Is it possibl...
6 comments posted 12yrs
posted by bperryb
6 comments posted 12yrs posted by bperryb

HC4046 Modeling

Seems to be a hot day for HC4046 model requests. And sending the model out by E-mail has resulted in mucho bouncing......
15 comments posted 12yrs
posted by To-Email-Use-The-Envelope-Icon
15 comments posted 12yrs posted by To-Email-Use-The-Envelope-Icon

High Side Driver

High Side Driver... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal AS...
24 comments posted 12yrs
posted by To-Email-Use-The-Envelope-Icon
24 comments posted 12yrs posted by To-Email-Use-The-Envelope-Icon