Hobby Electronics Basics

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

OT: SOT-523 PNP Question

I need something like a 2N3906 device in an SOT-523 package BUT with pin-out: 1 = Base 2 = Collector 3 = Emitter A clie...

87 comments posted 12yrs

posted by To-Email-Use-The-Envelope-Icon

87 comments posted 12yrs posted by To-Email-Use-The-Envelope-Icon