Hobby Electronics Basics

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240V AC

I bought an electronics device that wants a 240V AC input. Unfortunately, I'm in the U.S., which only has 120V AC outlet...
8 comments posted 20yrs
posted by mike7411
8 comments posted 20yrs posted by mike7411

24Vdc Power supply

Could somebody please help me with a very simple 24Vdc power supply, capable of delivering 20amps. Does not need to be...
28 comments posted 20yrs
posted by iantedridge
28 comments posted 20yrs posted by iantedridge

12V 80Va Transformer

Help Please, Can somebody explain to me what 80VA Means for a transformer with 2 x 12V outputs, and 240V inputs. What I...
25 comments posted 20yrs
posted by iantedridge
25 comments posted 20yrs posted by iantedridge

Why polairity on a DC relay?

Why does this 5V relay have a polarity marked on the coil? It does not seem to have a built-in diode. See bottom of pag...
4 comments posted 20yrs
posted by joe
4 comments posted 20yrs posted by joe

Infra red

Will the infra red radiation from an ordinary 100 watt bulb pass through two sheets of window glass about 5 metres apart...
9 comments posted 20yrs
posted by dewhurst
9 comments posted 20yrs posted by dewhurst

What is 18 pins I/O plug?

Hi all, I am looking for a plug, male of hirose 18 pins I/O connector. The part number of 18 pins I/O connector is MQ/S...
3 comments posted 20yrs
posted by bob2a
3 comments posted 20yrs posted by bob2a

PIC micro math

Can anyone point me to some assembly code for doing 16-bit math on 8-bit PICs? Thanks
8 comments posted 20yrs
posted by randy.day
8 comments posted 20yrs posted by randy.day

what methods do you use to strip wires?

Looking for easy methods to strip the ends of wires for breadboarding or just general use. Typically I have been just u...
25 comments posted 20yrs
posted by rkremser
25 comments posted 20yrs posted by rkremser

breadboard

I bought a potentiometer at Radio Shack, but it doesn't fit on my breadboard. How do most people attach these to breadbo...
5 comments posted 20yrs
posted by mike7411
5 comments posted 20yrs posted by mike7411

volume attenuator

If I put a potentiometer on this circuit, will it serve as a decent volume attenuator? http://electronics.howstuffworks....
9 comments posted 20yrs
posted by mike7411
9 comments posted 20yrs posted by mike7411

question about networking hubs / ethernet repeaters

question about networking hubs / ethernet repeaters - say you have comps A,B,C,D connected to a hub. It's my understand...
16 comments posted 20yrs
posted by q_q_anonymous
16 comments posted 20yrs posted by q_q_anonymous

potentiometer

Does anyone know exactly what the resistance varies between with this potentiometer?...
5 comments posted 20yrs
posted by mike7411
5 comments posted 20yrs posted by mike7411

Low Current Measurement (without ammeter)

Hello Everyone, I have an application that uses 3 displacement sensors with analog current output from 0 to 20mA. I hav...
5 comments posted 20yrs
posted by ewilliams2
5 comments posted 20yrs posted by ewilliams2

Touch switch / Capacitive Sensor ?

Hi there, I have seen a IMO cool gadget lately in a hotel. Instead of a mechanical wall switch, you basically found a m...
1 comments posted 20yrs
posted by pkunze
1 comments posted 20yrs posted by pkunze

Just checking in

Couldnt continue last night as google seems to put a posting limit on folks now.... I would continue this morning but I...
2 comments posted 20yrs
posted by cornytheclown
2 comments posted 20yrs posted by cornytheclown