Hobby Electronics Basics

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is a full load min or max resistance?

If someone has a load that can be 10ohms up to 50ohms, and says to figure something out at full load, is full load the...
3 comments posted 15yrs
posted by panfilero
3 comments posted 15yrs posted by panfilero

RMS versus AVERGAGE

ok, here's my questions... and it's coming from looking at alot of these switch mode power supply converters, where the...
42 comments posted 15yrs
posted by panfilero
42 comments posted 15yrs posted by panfilero

inductor powered LED

Hi I am trying to design a bike light made of some LEDs powered by an inductor, could anyone recommend me any reading t...
2 comments posted 15yrs
posted by mrichytech
2 comments posted 15yrs posted by mrichytech

Doof doof zapper

Any one have ideas on how to make a Doof Doof zapper. preferably directional, that would interfere with the Doof Doof s...
23 comments posted 15yrs
posted by haggisz
23 comments posted 15yrs posted by haggisz

Electronic-Optical Counter

Hi, My students are in need of an Optical-Electronic counter to count the revolutions/minute (rpm) of a propeller drive...
16 comments posted 15yrs
posted by dr.mohib
16 comments posted 15yrs posted by dr.mohib

Electrical Contact Material

Can anyone tell me of any springy, corrosion resistant metals/allows that don't need special plating to be used as cont...
84 comments posted 15yrs
posted by Searcher7
84 comments posted 15yrs posted by Searcher7

My electronics is rusty

I need some help with this. My electronics is real rusty. I will start with the trim pot. Mine has 3 leads and I was to...
42 comments posted 15yrs
posted by chocolatemint77581
42 comments posted 15yrs posted by chocolatemint77581

looking for DAQ that measures PPM tia sal22

Greetings all I'm looking for a DAQ that will measure PPM (particles per million) over time, can anyone recomend one? ti...
3 comments posted 15yrs
posted by ratullloch_delthis
3 comments posted 15yrs posted by ratullloch_delthis

OT a sign of the times

I was futzing around building a uhf bowtie antenna and needed some fender washers. The hardware store is 6 miles away i...
33 comments posted 15yrs
posted by default
33 comments posted 15yrs posted by default

Inverters /buffers in parallel

Can I run two or three CMOS inverters (74HC14=92s) in parallel to get more current? I=92m using them as a monitor outpu...
11 comments posted 15yrs
posted by ggherold
11 comments posted 15yrs posted by ggherold

LTSpice noob question

I want to plot the transfer characteristic of a CMOS inverter, with input voltage on the horizontal axis and output vol...
2 comments posted 15yrs
posted by nospam
2 comments posted 15yrs posted by nospam

Open collector output to operate relay

Hi ALL, I m having digital output with 150mA Max.Current and a Relay of "HLS-CMA3-B" rating:40A/14VDC 560W DC12V. I nee...
6 comments posted 15yrs
posted by capa.master
6 comments posted 15yrs posted by capa.master

Serial - Ethernet converter request some details

Could some electronics guru provide some details on serial-Ethernet converters. 1. What exactly is the conversion schem...
5 comments posted 15yrs
posted by dakupoto
5 comments posted 15yrs posted by dakupoto