Hobby Electronics Basics

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Hot wire foam cutter

I was browsing through my junk collection and think I have the elements to make a hot-wire foam cutter, was wondering i...
10 comments posted 21yrs
posted by No_Spam
10 comments posted 21yrs posted by No_Spam

Dividing circuits

I am building a free pendulum clock, and am hoping to get pulses at the rate of one per second from a photoelectric cel...
2 comments posted 21yrs
posted by jtcraig
2 comments posted 21yrs posted by jtcraig

continuous static arc

Does anyone have a circuit to create a continuous static arc between two points about 1 cm apart.
5 comments posted 21yrs
posted by zafar.khan1
5 comments posted 21yrs posted by zafar.khan1

Infared remote control - help needed

Hi, I am currently working on a school assignment, where I have to build a fully working remote control and describe th...
5 comments posted 21yrs
posted by flashbiter
5 comments posted 21yrs posted by flashbiter

pcb specs IPC 2221 for free?

Is there a place where I can find IPC standards for free ? specially IPC 2221 for pcb designing ? Or someone interested...
0 comments posted 21yrs
posted by siliconmike
0 comments posted 21yrs posted by siliconmike

Auto battery question

A few days ago, my car wouldn't start. The dashboard electronics were all working, so I figured it's a dying battery. I...
34 comments posted 21yrs
posted by samthebam1
34 comments posted 21yrs posted by samthebam1

A thought about high voltage

I was just thinking of that trick Nikola Tesla invented where he would strap himself to one of his coils and stand on a...
8 comments posted 21yrs
posted by ngdbud
8 comments posted 21yrs posted by ngdbud

Power-on reset

Is there a relatively simple circuit which can assert a power-on reset. In other words, the line will go high briefly a...
2 comments posted 21yrs
posted by dbernat32
2 comments posted 21yrs posted by dbernat32

inverter arc-welding scheme

Hi to everybody ! Im looking for inverter arc welding circuits (with mosfets) for my next homebuilt welder and some bas...
5 comments posted 21yrs
posted by senzaparole
5 comments posted 21yrs posted by senzaparole

Quadrature output

Hi can anybody help me out with the problem below. i am supposed to create standard quadrature o/p (2 or 3 oututs, A B...
0 comments posted 21yrs
posted by sandeep_sudheer
0 comments posted 21yrs posted by sandeep_sudheer

ADSL: too far from the CO? Use a second pair?

Say if we need a thicker cable to transmit signals better, then one could just add additional strands no? And what if t...
8 comments posted 21yrs
posted by jidanni
8 comments posted 21yrs posted by jidanni

SLE4442 low level protocol

Hi, I need to get an ID from the SLE4442 smartcard. If needed self-written. Besides the fixed ID's in the card it is po...
0 comments posted 21yrs
posted by weer1
0 comments posted 21yrs posted by weer1

single chip music player

I am trying to help a friend find a chip that I suspect doesn't exist but I have to give it a try. He wants a simple ci...
3 comments posted 21yrs
posted by 1qazse4
3 comments posted 21yrs posted by 1qazse4