Hobby Electronics Basics

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Data Sheet Annoyance

Is this an attempt to obfuscate... figuring that everyone is a dummy and doesn't know De Morgan's theorems? ...Jim Thom...
15 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
15 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

OT: Honest Analysis of Solar Power

Anyone know where I might find an honest ROI analysis of solar power? Everything I find is baloney-nosed in favor of th...
39 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
39 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Op-amp voltage offset cancellation

Combination of one fast op-amp with large slew rate and large voltage offse t with one op-amp with small slew rate and...
0 comments posted 11yrs
posted by pchung705
0 comments posted 11yrs posted by pchung705

Website Update

Behavioral_Comparators.zip has been added to the Device Models & Subcircuits Page of my website. ...Jim Thompson -- | J...
0 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
0 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

How to slow down RPM of miter saw?

The motor runs on standard USA 120 V 60 Hz, 14 A, at 5500 RPM. What's the easiest way to slow down the RPM? What about...
42 comments posted 11yrs
posted by always.look
42 comments posted 11yrs posted by always.look

Why this inconsistent resistance reading?

Today I've been trying to isolate a mains leakage tripping my circuit break er. Using my DMM to measure resistance at c...
13 comments posted 11yrs
posted by terrypingm
13 comments posted 11yrs posted by terrypingm

Current limiter that doesn't

Hi all, I'm stuck. I am trying to limit the current flowing through a relay by using two transistors and a current-sens...
2 comments posted 11yrs
posted by c.difficile
2 comments posted 11yrs posted by c.difficile

Automation Makes Us Dumb

I really believe this is happening... New College Graduates (aka NCG's) seem to have no imagination whatsoever, with bo...
32 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
32 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Resonance & Pieces of Eight

If silver or gold coins had characteristic resonant frequencies then it ought to be possible to scan large areas of sea...
6 comments posted 11yrs
posted by BretCahill
6 comments posted 11yrs posted by BretCahill

Handling HSpice Files

HSpice2PSpiceNewEdit.pdf, on the Simulation Tools & Macros Page of my website, has been updated with some new library f...
0 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
0 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Current mirror

Current mirror is inevitable part of input stage of operational amplifiers. Current mirror behaves almost as perfect cu...
0 comments posted 11yrs
posted by pchung705
0 comments posted 11yrs posted by pchung705

A logic Question

I have a thread running about the 3 speed fan. I made measurements of a known good 3 speed fan. I have 3 sets of resist...
14 comments posted 11yrs
posted by nojunk
14 comments posted 11yrs posted by nojunk

3 Speed Fan motor problem

My wife loves to pick up items other people throw out, because she thinks I can repair them. When she saw me starting t...
9 comments posted 11yrs
posted by nojunk
9 comments posted 11yrs posted by nojunk