Hobby Electronics Basics

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240V Control Transformer issue

i have a Control Transformer with 240V on the primary, with 24VAC out the secondary. My question is what would happen if...
7 comments posted 19yrs
posted by noen
7 comments posted 19yrs posted by noen

DC Voltage regulation

I have a 12 volt dc 690 rpm permanent magnet motor that I'm wanting to use as a wind generator. The problem is that whe...
5 comments posted 19yrs
posted by mholton
5 comments posted 19yrs posted by mholton

Nimh batteries

I have bought some AA Nimh batteries and find that they are vary slightly bigger than standard alkalines. I'm talking a...
1 comments posted 19yrs
posted by jim_doak
1 comments posted 19yrs posted by jim_doak

help needed to identify an IC

Hello, I have an IC I want to identify. Here's the problem. I have a machine that uses a Xenon pulsed arc light, the ma...
5 comments posted 19yrs
posted by jerry
5 comments posted 19yrs posted by jerry

How to limit current from spot welder?

Greetings All, I have a handheld spot welder, the type used for autobody sheet metal among other things. I am convertin...
19 comments posted 19yrs
posted by etpm
19 comments posted 19yrs posted by etpm

Finding the noise-source in a headphone-amp

Greetings I found and built this project: http://raymondaudio.nl/projects/project7/project7.html After I finished and t...
8 comments posted 19yrs
posted by bos
8 comments posted 19yrs posted by bos

Any Software that can Write-protect microSD ?

Hello, Inside the microSD flash memory, and SD flash memory, there is a bit, that once programmed, the data inside the...
4 comments posted 19yrs
posted by titani
4 comments posted 19yrs posted by titani

Case styles and mystery component

1) is there a resource on the 'net that has diagrams of the various semiconductor case types? I mean like the old TO-se...
6 comments posted 19yrs
posted by randy.day
6 comments posted 19yrs posted by randy.day

ADC current requirement

Im still working on ATmega16 which has buil-in A/D -converter. It seems that the converter is a drain for 10mA current...
4 comments posted 19yrs
posted by kinnunen.jmk
4 comments posted 19yrs posted by kinnunen.jmk

Request for assistance

I'm on a digital FM transmitter project.But i can't understand the diagrams.Xan somzbody assist me 'til I complete this...
0 comments posted 19yrs
posted by ngariera
0 comments posted 19yrs posted by ngariera

power control system

Let's say you have a closed loop power control system that is making adjustments every second proportional to the error...
4 comments posted 19yrs
posted by bob
4 comments posted 19yrs posted by bob

wall wart basic question

I have a electronic device that uses an OEM ($$$) wall wart rated at 5VDC and 220mA. In my collection of transformers I...
9 comments posted 19yrs
posted by spammenot
9 comments posted 19yrs posted by spammenot

Telephony

Hello, I would like to develop a circuit to disconnect a dial-up connection when I receive the signal of a call in wait...
32 comments posted 19yrs
posted by gethostbyname
32 comments posted 19yrs posted by gethostbyname

How do you test a capacitor?

Just bought a generator and it failed within two hours of usage. Mfg. say maybe capacitor and will ship a new one. But...
23 comments posted 19yrs
posted by Waynelund
23 comments posted 19yrs posted by Waynelund

read/write in memory card with microcontroller

Hi, I would like to use a memory card (SD for example) to exchange data between a PC and a microcontroller or cpld. I h...
0 comments posted 19yrs
posted by gg31400
0 comments posted 19yrs posted by gg31400