Hobby Electronics Basics

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dying trees

As is seasonally traditional, we recently had a dying tree in our house the tree had no roots, the base of the trunk sa...
19 comments posted 8yrs
posted by jasen
19 comments posted 8yrs posted by jasen

$0.79 Clip On LED Light for Phone Batteries

I have a collection of batteries I find cycling. Yesterday it was a Galaxy Note 4. You don't have to cycle thousands of...
0 comments posted 8yrs
posted by bretcahill
0 comments posted 8yrs posted by bretcahill

Solder paste

I having been using Oatey solder paste when soldering large diameter wires. I know it's designed for copper pipes. Is th...
18 comments posted 8yrs
posted by andrewkennedy775
18 comments posted 8yrs posted by andrewkennedy775

Bifilar inductor?

Hi all, silly question. Dave's EEVblog was on... there was this bifilar wound coil (starts at ~39 minutes in) https://w...
27 comments posted 8yrs
posted by gherold
27 comments posted 8yrs posted by gherold

LEDs: "wattage" redefined

I got these LED floodlights for free - "24 watt, 12 - 30v". I put one on a bench supply & checked the current: 500ma @ 1...
8 comments posted 8yrs
posted by BobEngelhardt
8 comments posted 8yrs posted by BobEngelhardt

What is a "wet contactor"

An eBay listing for a electronic tachometer specifies that it's input can be a "wet contactor". Is there a standard mean...
17 comments posted 8yrs
posted by BobEngelhardt
17 comments posted 8yrs posted by BobEngelhardt

Triac efficiency

Hi everyone, When regulating the power to a motor or light, does the triac do so efficiently or does it dump the unwante...
10 comments posted 8yrs
posted by mrdarrett
10 comments posted 8yrs posted by mrdarrett

One Thing I Never Understood - Tunnel Diodes

Its theory of operation escapes me. I know there is a negative resistance part of its IE curve, but doesn't that just m...
9 comments posted 8yrs
posted by jurb6006
9 comments posted 8yrs posted by jurb6006

help identifying damaged IC

I'm trying to identify a damaged IC in my son's radio controlled car. It's SO-8 package, I think it's an H Bridge. The...
2 comments posted 8yrs
posted by me
2 comments posted 8yrs posted by me

keeping tools/devices dry (rice)

Will putting a pouch of rice in a toolbox with devices stop rust? (I remember this was recommended, but I don't remember...
24 comments posted 8yrs
posted by bruce2bowser
24 comments posted 8yrs posted by bruce2bowser

Tee Hee

Tee Hee... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and...
0 comments posted 8yrs
posted by To-Email-Use-The-Envelope-Icon
0 comments posted 8yrs posted by To-Email-Use-The-Envelope-Icon