Hobby Electronics Basics

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Trying to ID component

Hi, I am trying to ID a surface mount component and having trouble reading the part number. I believe it is a 5V surfac...
3 comments posted 20yrs
posted by N
3 comments posted 20yrs posted by N

motors in robotics

Hello, I am not sure if its the right place for this but here goes. I am constructing a line following robot. it is goi...
3 comments posted 20yrs
posted by lerameur
3 comments posted 20yrs posted by lerameur

DC Circuit Analysis

I am currently studying Kirchoff's Current Law and Kirchoff's Voltage Law with respect to DC circuit analysis. I am an...
7 comments posted 20yrs
posted by meyousikmann
7 comments posted 20yrs posted by meyousikmann

Integrated USB controller just died

All of my integrated USB ports have just died, I was using it earlier to sync my PDA. I have since tried other USB devi...
5 comments posted 20yrs
posted by N
5 comments posted 20yrs posted by N

iTone portable docking station - iDock

Can anybody advise me if I can run an iDock bought in the US on UK power? An ordinary US to UK adaptor plug just fuses.....
1 comments posted 20yrs
posted by snow.lynx
1 comments posted 20yrs posted by snow.lynx

Smoothing Capacitor Values

Hi, I'm making a device for an ROV and need to bring the onboard power of 12V down to 5V. After a bit of research I can...
25 comments posted 20yrs
posted by mqiqcqhqaqeqlqhqiqmqsq
25 comments posted 20yrs posted by mqiqcqhqaqeqlqhqiqmqsq

Maplin Relay in 24hr timer circuit

I'm trying to build a circuit from http://www.zen22142.zen.co.uk/Circuits/Timing/24hour.htm 24 hr timer{2} I could not...
5 comments posted 20yrs
posted by dwbauer
5 comments posted 20yrs posted by dwbauer

Repair of paint stripper

I have a black and decker paint stripper. It doesnt work. There is one little electical part in it that could be a ther...
7 comments posted 20yrs
posted by stevesemple
7 comments posted 20yrs posted by stevesemple

Compact fluorescent - voltage

What voltage do all these compact fluorescent "lamps" use ..? And what waveform/frequency is required (used) ..?
20 comments posted 20yrs
posted by pbdelete
20 comments posted 20yrs posted by pbdelete

IO mos

Dear All Can you share with me what is the major difference between a logic mos and I/O mos? Does IO mos has longer gat...
1 comments posted 20yrs
posted by cheanglong
1 comments posted 20yrs posted by cheanglong

Source Sealed Potentiometers?

Can anybody recommend a source of miniature multi-turn potentiometers, protected to IP67 or 68 for a marine application?...
0 comments posted 20yrs
posted by spamfree
0 comments posted 20yrs posted by spamfree

Basic Switch Mode 230-20v PSU

This has probably been asked before but I want to build a psu to replace a standard linear design to save space. I want...
6 comments posted 20yrs
posted by luke.briner
6 comments posted 20yrs posted by luke.briner

48 DCV battery design

Hi to all ! I have connected 19 "small" homemade batteries into one realy, realy huge battery. After some tests and aft...
11 comments posted 20yrs
posted by iKolar26
11 comments posted 20yrs posted by iKolar26

555 50% duty cycle

I thought I had seen a 555 circuit with a 50% duty cycle and variable frequency. It used two diodes in the charge/disch...
3 comments posted 20yrs
posted by amdx
3 comments posted 20yrs posted by amdx

Looking for a good book on Boolean Algebra

Hi, I am looking for a good book on Boolean Algebra and Switching Circuits, preferably one that covers diagnostics e.g....
11 comments posted 20yrs
posted by newberry
11 comments posted 20yrs posted by newberry