Hobby Electronics Basics

Re: Cell phone electrocution

> Sure, charging a phone in the bathroom isn't recommended, but I thought > chargers were better designed than this. Te...

21 comments posted 9yrs

posted by curd

21 comments posted 9yrs posted by curd

Cheap display has weird frequency count

I bought an inexpensive volt/frequency led display from eBay. On a generator, I get the proper frequency display, aroun...

2 comments posted 9yrs

posted by C

2 comments posted 9yrs posted by C

Efficient Actuators for Alpha Stirling

The goal is an Stirling w/o a mechanical crank/flywheel. Instead it'll have 2 electric actuators and a linear generator...

4 comments posted 9yrs

posted by bretcahill

4 comments posted 9yrs posted by bretcahill

ground wire

I have a big mess. A person took off my carburetor on my car and I can not find the person. The carburetor was put back...

45 comments posted 9yrs

posted by 121969

45 comments posted 9yrs posted by 121969

Ripple Current and ESR

Hi all, What's the deal with this? I read somewhere that a high ripple current figure for an electrolytic is a bonus; a...

27 comments posted 9yrs

posted by cbx

27 comments posted 9yrs posted by cbx

Impedance calculation (CS stage)

Hello. I am trying to calculate the output impedance for the following circuit in SPICE notation (CS stage with drain-g...

2 comments posted 9yrs

posted by electronics

2 comments posted 9yrs posted by electronics

Timer Terminology

Hello All, I have been reading this newsgroup for some time, mostly for my own edification and mild amusement/wondermen...

21 comments posted 9yrs

posted by someone

21 comments posted 9yrs posted by someone

Cheapest way to measure this?

I have to use a CPAP to sleep well. I'm going camping and will need to bring battery power for the thing. So I would li...

8 comments posted 9yrs

posted by etpm

8 comments posted 9yrs posted by etpm

datasheet for THGBMFG8C4LBAIR

Hi! Can anyone point me to the datasheet for an thgbmfg8c4lbair 32GB emmc flash chip? Searching only brings up a press...

2 comments posted 9yrs

posted by me

2 comments posted 9yrs posted by me

supercap leakage

https://dl.dropboxusercontent.com/u/53724080/Parts/Caps/Supercap_Leakage.JPG Looks like it would be fine to stack these...

28 comments posted 9yrs

posted by jjlarkin

28 comments posted 9yrs posted by jjlarkin

Open the (mosfet) gate!

I was looking at this datasheet: http://www.irf.com/product-info/datasheets/data/irlz34n.pdf Rds,on is 0.035 ohm with V...

55 comments posted 9yrs

posted by mrdarrett

55 comments posted 9yrs posted by mrdarrett

jfet

Good, people are still introducing jfets. http://www.onsemi.com/PowerSolutions/product.do?id=NSVJ3910SB3&featured=featur...

4 comments posted 9yrs

posted by jjlarkin

4 comments posted 9yrs posted by jjlarkin

Splitting an error signal into DC and High Freq.

OK this is a bit of a silly question. (But what the heck better than thawing tundra.) I want to split an error signal i...

14 comments posted 9yrs

posted by gherold

14 comments posted 9yrs posted by gherold

mosfet driver needed for logic-level mosfets?

Hello, I've discovered logic-level mosfets, and am using an Arduino to drive a small 12VDC (about an amp or so) pump mo...

43 comments posted 9yrs

posted by mrdarrett

43 comments posted 9yrs posted by mrdarrett

Power output of TBA820M (audio amplifier chip)?

Does anyone know a formula for calculating the power output of the TBA820M audio amplifier IC? The data sheet gives the...

8 comments posted 9yrs

posted by a24061

8 comments posted 9yrs posted by a24061