Hobby Electronics Basics

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Low Alternator Output In the Desert Heat

Everything is OK when the headlights and blower are off on hot summer days and everything is OK on cool winter nights w...
11 comments posted 11yrs
posted by bretcahill
11 comments posted 11yrs posted by bretcahill

Power Supply Ripple Measurement

Hi, 1. I am trying to measure the output voltage ripple of a 5 Volt , 1A power supply. The input to the power supply is...
11 comments posted 11yrs
posted by walravenmelissa
11 comments posted 11yrs posted by walravenmelissa

AN: TL598 Spice Model

Awhile back someone on the LTspice List requested a TL598 Spice model. While somewhat obsolete, it intrigued me, and pr...
0 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
0 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Loud Popping Sound from Class D Amp Soundbar

I have a 2 yo. soundbar that started making annoying popping and buzzing so und (like AC hum but with more harmonics)....
2 comments posted 11yrs
posted by gangh58
2 comments posted 11yrs posted by gangh58

oscillator with constant amplitude

I don't want anybody to design it for me, but in general how would you make an oscillator with a sine output of constan...
18 comments posted 11yrs
posted by fizzbintuesday
18 comments posted 11yrs posted by fizzbintuesday

Transparent RF Repeater

Hello, I'm trying to build a transparent RF repeater (simplex) as a relay for two radios. The receive and transmit freq...
11 comments posted 11yrs
posted by hajekg
11 comments posted 11yrs posted by hajekg

Time to Upgrade ?:-}

I think it's time I upgraded my 'Spice' machine... my present machine is as follows... no laughter please... I've succe...
72 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
72 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Socket Question

Is there such a thing as a conventional light-bulb socket mountable to a PCB? ...Jim Thompson -- | James E.Thompson | m...
6 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
6 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

OT: Opinions about this situation?

OT: Opinions about this situation?... An alternate question... at what frequencies are these "devices" controlled ?>:-}...
28 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
28 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Dummy AA Batteries

Got this camera I finally figured out how to operate. Problem is it eats batteries. An alkalines you do not get that mu...
9 comments posted 11yrs
posted by jurb6006
9 comments posted 11yrs posted by jurb6006

OT: Scanner

My 20-something year-old hp Scanjet 3970 died... or at least the wallwart outputs no juice, so it's a toss... scanner d...
23 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
23 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

OT: JV Team

TENNESSEE TERROR: Gunman who killed 4 Marines in Chattanooga ID'd as Muhammad Youssef Abdulazeez THE GUNMAN who opened...
9 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
9 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Weight of stuff

Ok guys, I think he as moved on. You can now resume your NORMAL activities.
1 comments posted 11yrs
posted by someone
1 comments posted 11yrs posted by someone