***Official Electronics Thread of Officialness (it starts off with lots of Nixie Tube Clock goodness
- Thread starter Aod
- Start date
How much are these? Would love to get one but always assumed they would be mentally expensive?
Your project sounds great as a teaching tool for anyone who's new to electronics.
I've used Multisim to proof all my circuits before even breadboarding as it's so much easier to lay down a circuit quickly. It also helps as a dry run while you are waiting for components. Real world results are often slightly different of course but it's good as an indication.
What would one use an UV exposure box for and how big, expensive would it be. Sounds interesting.
What would one use an UV exposure box for and how big, expensive would it be. Sounds interesting.
Man of Honour
yeah i know it's available in software it's just more fun/easier to see physically
What’s brought on this interest for electronics, is it your apprenticeship or has the urge finally become too great?
partly apprenticeship (we do some basic electronics there) but mostly, now got money coming in and i have a garage again (instead of student accommodation) so i can finally get into it as i always put it off.
And minecraft got me into logic gates/circuits seeing practice applications for the very simple single gates to big complicated circuits relying on clocks flip flops etc is great for peaking your interest.
and on that note first payslip came though today 1058.90 after tax
Man of Honour
partly apprenticeship (we do some basic electronics there) but mostly, now got money coming in and i have a garage again (instead of student accommodation) so i can finally get into it as i always put it off.
And minecraft got me into logic gates/circuits seeing practice applications for the very simple single gates to big complicated circuits relying on clocks flip flops etc is great for peaking your interest.
and on that note first payslip came though today 1058.90 after tax
Excellent. That Nixie Clock kit is waiting for you to click on the buy button.
you muse it to activate photo resist on circuit. So you print out the inverse of your circuit schematic (so black where you want no copper) onto clear sheet over head projector style stuff, lay it over the board and expose it to uv light for a few mins (anywhere between 20 seconds and 5 mins depending on your lights) take it out. develop it (kinda like a photo usualy just using sodium hydroxide or premixed developer).
Then you take the pcb and dump it in your enchant, that removes all the non covered copper (so anywhere that was shielded from the light) remove from echant then clean off the photo-resist coating from the remaining coper and you now have your own very precise pcb.
and you can reuse the transparent template thing over and over for ever.
they seem very expensive to buy but cheap to make, either with some 5-15W black light tubes or a lot of UV LeD's which cost like £10 for a hundred on ebay.
Excellent. That Nixie Clock kit is waiting for you to click on the buy button.
nah i don't want a kit i want to make my own
so i can add some extra functions
hmmm i wonder if they'll let me use some of the scrap alclad to make a case for it, I'm sure if i draw out proper schematics + all the correct planning sheets +risk assessments my TTO would let me make it in any spare time i have (ie when i've finished my assessments +paper work).
our first practical assessment started today
for the last training task which was very simple i got about 10 pages of log sheets>.< the amount of paperwork is insane.
Soldato
UNI-T meters aren't bad at all are widely available and fairly reasonable. Tenma stuff is also OK, and they have a wide range ranging from cheap to not so cheap.
I have a Uni-T UT70B which is quite nice. it's autoranging, seems to be reasonably accurate, and has an RS232 connection for data-logging on a PC (works in windows 7!)
Only complaint is that it isn't a True RMS meter, so rapidly fluctuating things like PWM power-draws like what you'd see on a flashlight sometimes give funny readings.
Only complaint is that it isn't a True RMS meter, so rapidly fluctuating things like PWM power-draws like what you'd see on a flashlight sometimes give funny readings.
Soldato
I have a UT61D (as you can see from my previous pictures in this thread), and it's very much the same, apart from the fact that it is true RMS. It seems to be reasonably accurate, consistent, and well put together.
The optically isolated RS232 feature is pretty cool, although I will admit not to using it much
Associate
Low voltage components going in, wish me luck.
Commissario
Good luck, but you don't really need it, it's an easy build
yeah! just make sure you don't short circuit anything
http://www.rapidonline.com/Tools-Equipment/Test-Equipment/Multimeters
which would you say is a good multimeter from there that's not pointlessly expensive/over or under speced?
which would you say is a good multimeter from there that's not pointlessly expensive/over or under speced?
Soldato
Depends how much you want to spend, i was actually looking for a decent analogue one the other day (needles>LCD ). Any of them would probably be accurate enough for regular use, as long as you know how to use it. If you spend more you're basically spending it on auto-ranging (and higher spec components). Just a quick skim through but the Amprobe AM-220 looks alright for the price.
). Any of them would probably be accurate enough for regular use, as long as you know how to use it. If you spend more you're basically spending it on auto-ranging (and higher spec components). Just a quick skim through but the Amprobe AM-220 looks alright for the price.