Hobby Electronics Basics

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Will a cellphone work underground?

Someone was joking around, saying he wanted to be buried with a cellphone so he can spook certain people after he dies....
22 comments posted 11yrs
posted by electron206
22 comments posted 11yrs posted by electron206

Voltage divider

Voltage divider is just two resistor connected is series, but powerful tool for calculating electrical potential of som...
0 comments posted 11yrs
posted by pchung705
0 comments posted 11yrs posted by pchung705

frequency dividers

I would like to know how to make some simple frequency dividers thank you for any answers Kurt Stocklmeir -- --- Posted...
1 comments posted 11yrs
posted by kurtcursed
1 comments posted 11yrs posted by kurtcursed

Charging lithium ion battery?

My ageing smartphone (an HTC Touch Pro 2, running Windows Mobile 6) has suddenly developed the show-stopping fault of r...
3 comments posted 11yrs
posted by me
3 comments posted 11yrs posted by me

Adhesive to hold Speaker crossover components

I'm replacing a couple of capacitors in speaker crossover. The parts have a glue that holds them tight to the PCB, the...
16 comments posted 11yrs
posted by nojunk
16 comments posted 11yrs posted by nojunk

Microcontroller NG

I am somewhat disappointed at the lack of newsgroups dedicated to microcontrollers. Specifically the more popular ones...
5 comments posted 11yrs
posted by kevinfglover
5 comments posted 11yrs posted by kevinfglover

Placing noise on mains?

Some of the household circuits gadgets I made decades ago have recently been getting activated spuriously. I suspect so...
9 comments posted 11yrs
posted by me
9 comments posted 11yrs posted by me

Better lighting for electronics hobbyists

Buy a headlamp, foo! Just in case anybody doesn't already know. If only I had one when I was electronics hobbying many...
0 comments posted 11yrs
posted by always.look
0 comments posted 11yrs posted by always.look

Multimeter and Signal Generator

Hi, I am using the following multimeter http://www.repeater-builder.com/radio-shack/22-812/22-812-operating-manual-en.p...
5 comments posted 11yrs
posted by walravenmelissa
5 comments posted 11yrs posted by walravenmelissa

How to debug and fix voltage droop in SMPS

Hi all, I am trying to get a TI TLV61220 step-up voltage converter to work properly under load. This is a difficult par...
6 comments posted 11yrs
posted by c.difficile
6 comments posted 11yrs posted by c.difficile

OT: Great-grandson

OT: Great-grandson born this morning at 6AM MST ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations...
7 comments posted 11yrs
posted by To-Email-Use-The-Envelope-Icon
7 comments posted 11yrs posted by To-Email-Use-The-Envelope-Icon

Before it's put on a slow boat from China

I need a 2.7uf 63V non-polarized capacitor for a speaker crossover. It is a radial lead 10mm x 22mm cap. Ebay has them...
13 comments posted 11yrs
posted by nojunk
13 comments posted 11yrs posted by nojunk

Bi-stable Multivibrator

Need a flip/flop bistable with following features. Q and not Q must change states upon each positive input pulse. I hav...
17 comments posted 11yrs
posted by strmbrgr2
17 comments posted 11yrs posted by strmbrgr2

Power Supply

Hi, I have been assigned to do some "switching power" ESD testing recently. I a m a beginner engineer. So, please forgi...
1 comments posted 11yrs
posted by erica.cross1989
1 comments posted 11yrs posted by erica.cross1989