Hobby Electronics Basics

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crystal oscillator

Please suggest me how to estimate the motional capacitance of a crystal. The datasheet provided by the manufacturer gene...
0 comments posted 20yrs
posted by atul.ee
0 comments posted 20yrs posted by atul.ee

12 volt fan

I have 1986 Suburban with a bad heater blower. I was thinking about getting a cheap 12 volt muffin fan. allelectronics...
5 comments posted 20yrs
posted by kellrobinson
5 comments posted 20yrs posted by kellrobinson

What is line level audio?

I want to set the output of a oscillator to drive an audio amplifier. I thought a line input looks for 1vrms, is that a...
14 comments posted 20yrs
posted by amdx
14 comments posted 20yrs posted by amdx

Need info on Polaroid flash boards

Having salvaged a number of Polaroid Land cameras for their sonar units, I have a box of complete flash units that I wo...
0 comments posted 20yrs
posted by jbasi
0 comments posted 20yrs posted by jbasi

Finally: the end of the "Scooter Saga"

For those who took the time to assist me with the problems regarding my scooter (if the situation with the acid-free ba...
2 comments posted 20yrs
posted by mea305
2 comments posted 20yrs posted by mea305

"Simple" hour/minute binary clock?

I've been all up and down Google for a couple hours now trying to find project instructions for a binary clock that dis...
30 comments posted 20yrs
posted by owner
30 comments posted 20yrs posted by owner

Starting Electronics

Hi, First of all, forgive me if this is the wrong place to post this, or if I'm posting a long-dead question. I've been...
12 comments posted 20yrs
posted by HWayne
12 comments posted 20yrs posted by HWayne

Will this lamp life increasing scheme work?

A long subject line, I know. Anyway, after having another light bulb fail in a bright flash when I turned it on it got...
15 comments posted 20yrs
posted by etpm
15 comments posted 20yrs posted by etpm

filtering high-frequency noise from power bus

I have a device involving several 4538 CMOS monostable multivibrators that has been operating fine for 6 months or so,...
2 comments posted 20yrs
posted by jalex
2 comments posted 20yrs posted by jalex

ink circuit

Is ink a conductor? For instance, could you use a standard printer to create parts of a circuit? Thanks.
6 comments posted 20yrs
posted by mike7411
6 comments posted 20yrs posted by mike7411

Basic question

A simple question, just to know about theory. Suppose I have 12v DC @ 1A, 1.5 LED. How much power resistor do I need to...
9 comments posted 20yrs
posted by grkumaran
9 comments posted 20yrs posted by grkumaran

Auto Car Wiper

Hello.. I was thinking to make an auto car wiper. I want to know what is the best sensor to use for the circuit. Hope yo...
10 comments posted 20yrs
posted by mohdwahidi
10 comments posted 20yrs posted by mohdwahidi

Questions about video frequency?

Hi: I have some questions regarding video frequencies. http://www.high-techproductions.com/pal,ntsc.htm 1. Why is the h...
22 comments posted 20yrs
posted by glucegen1
22 comments posted 20yrs posted by glucegen1

pal22v10?

I was interested to find out more about how to program the above spld device, I am looking for websites which have users...
5 comments posted 20yrs
posted by joakent
5 comments posted 20yrs posted by joakent