Hobby Electronics Basics

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Energy Star Blower

Does anyone make a 12VDC low current blower? 100 ma is not low current. Would like 40 ma or less. Something the size tha...
5 comments posted 16yrs
posted by nospam
5 comments posted 16yrs posted by nospam

Sure Electronics LED Matrix display

Hi, I am playing around with Sure Electronics LED Matrix display 2416 http://www.sureelectronics.net/goods.php?id=142 T...
0 comments posted 16yrs
posted by klaine8
0 comments posted 16yrs posted by klaine8

running a sim in pspice (demo version)

I have a schematic that I would like to run a simulation of. I'm using a spice program for the very first time today. I...
1 comments posted 16yrs
posted by nospam
1 comments posted 16yrs posted by nospam

HP Deskjet 990Cxi prints `in white!'

Hi, I've got an old Hp Deskjet 990Cxi which suddenly decided to print nothing. When I send a document to the printer, i...
10 comments posted 16yrs
posted by merciadriluca
10 comments posted 16yrs posted by merciadriluca

Quality factor

What happens to quality factor of capacitor when they are in parallel or series? For example if one 270pF has minimum Q...
6 comments posted 16yrs
posted by ravi2neha
6 comments posted 16yrs posted by ravi2neha

Appraising small rechargeable batteries

Hi Experts, I have many small rechargeable AA and AAA batteries and find it hard to appraise them. 1 How to determine i...
9 comments posted 16yrs
posted by JD
9 comments posted 16yrs posted by JD

Flash frequency possible for LED

I have a variable strobe which uses two bright leds in series driven by an oscillator and a BC547. This is quite effect...
11 comments posted 16yrs
posted by charlie
11 comments posted 16yrs posted by charlie

The proper way to carge a rechargeable battery?

After searching for information on how to recharge batteries I was left with contradicting suggestions regarding the pr...
16 comments posted 16yrs
posted by rui.maciel
16 comments posted 16yrs posted by rui.maciel

Where to buy a small wheel hub motor?

Specifically, where can I buy a high quality small wheel hub motor (with wheel) like the one used for powered Trikkes?...
10 comments posted 16yrs
posted by jdoe
10 comments posted 16yrs posted by jdoe

Energy Saving Tips

1. Reduce heater's room temperature For each extra degree (Celsius) of temperature, your heater will consume 7 to 11% m...
0 comments posted 16yrs
posted by sustainable.future115
0 comments posted 16yrs posted by sustainable.future115

I2C monitor

Hi, I have been thinking about how to connect to I2C bus, so that I can see whole activity going on. Maybe I should set...
4 comments posted 16yrs
posted by klaine8
4 comments posted 16yrs posted by klaine8

no cd drive

I have a PSpice program on cd that I want to load on my netbook, which doesn't have a cd drive. This netbook runs on xp...
7 comments posted 16yrs
posted by nospam
7 comments posted 16yrs posted by nospam