Hobby Electronics Basics

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New problems with the solved RS-latch problem

I have now solved the problem with the SR-latch, but I ran into a new problem (which regards what I think is oscillatio...
15 comments posted 20yrs
posted by bos
15 comments posted 20yrs posted by bos

Altair 8800 CPU Board Info

I thought I would share some PCB scans and x-rays. Someone might be interested in them. If you are, save them now. They...
5 comments posted 20yrs
posted by grant
5 comments posted 20yrs posted by grant

Pinch Valves?

Does anyone know of an online vendor that sells fairly cheap 12V or 24V pinch valves or solenoid valves? I have looked...
4 comments posted 20yrs
posted by zuckuss
4 comments posted 20yrs posted by zuckuss

LED's on a vehicle

I am trying to determine the optimum arrangment for multiple LED's powered by a 12V battery/alternator system on a moto...
13 comments posted 20yrs
posted by cprstn54
13 comments posted 20yrs posted by cprstn54

Problems with an SR-latch

I've been sitting with this problem the whole afternoon, and I'm on the verge giving up. I just can't seem to sort it o...
10 comments posted 20yrs
posted by bos
10 comments posted 20yrs posted by bos

Wire Wrap Technology

Is wire wrap dead? I was looking for some 16 pin DIP wire wrap blocks over at Mouser. Not finding them, I called Mouser...
16 comments posted 20yrs
posted by chuckwolber
16 comments posted 20yrs posted by chuckwolber

"manual closed loop control" is there such a thing?

Hi, I teach Technology in Scotland. In our arrangements documents mention is made of "manual closed loop control" It se...
10 comments posted 20yrs
posted by rgdavidson
10 comments posted 20yrs posted by rgdavidson

Coaxial Transfer Switch

Hy, I need a little bit of tutorial on coaxial transfer switch and more generally on transfer switch, on google I searc...
6 comments posted 20yrs
posted by etantonio
6 comments posted 20yrs posted by etantonio

Doppel Tape Deck brummt auf einem der zwei Decks

Hallo, ich habe ein 2 Jahre altes Sony Doppelkassettendeck. Seit neuestem brummt das Deck A bei Wiedergabe, Deck B verh...
1 comments posted 20yrs
posted by quinn_the_esquimo
1 comments posted 20yrs posted by quinn_the_esquimo

Unite 0V outputs from different power supplies

Hello We are making some changes in an installation, and there are some machines, everyone with its power supplies, +24...
4 comments posted 20yrs
posted by helola
4 comments posted 20yrs posted by helola

battery charging question

Hi to all. The camera that I just baught comes with NiMh batteries and a charger.Can I charge Nicad's in this charger....
2 comments posted 20yrs
posted by seegoon99
2 comments posted 20yrs posted by seegoon99

How do you Build a Magnet Detector

I'm looking for a circuit that can detect a magnet passing through a field about 1 foot away from the detector. The mag...
21 comments posted 20yrs
posted by Cindy44
21 comments posted 20yrs posted by Cindy44

small dc motors

Hi, does anyone know how I change the start/stop points on small dc motors? I have a few that I need to control at low...
28 comments posted 20yrs
posted by raul
28 comments posted 20yrs posted by raul

small voltage regulator?

I want to power a small 3V LED blinky device for a week or so. Normally it runs off watch batteries, so I tried buildin...
2 comments posted 20yrs
posted by rjohns
2 comments posted 20yrs posted by rjohns

paralleling of solenoid cabinet locks?

Hi, I'm really stumped on this one... Can solenoids that are used to open door locks (house..) be wired in parallel, wh...
4 comments posted 20yrs
posted by nospam
4 comments posted 20yrs posted by nospam