Hi Gareth,
The transparancies I use are from www.cpc.co.uk, they do all you need, but don't walk before you can run. They are called Jetstar, and they say for Epson printers but am sure must work in any.
Look at www.megauk.com probably a better bet actually and lots of info as well. Before you take the plunge, design a simple board as I suggested, and print on paper, see it all looks O.K.
You have to get used to diptrace, moving and rotating parts, printing the layout with and without component references etc. A boards no good with all the printing on it, shorts everything out
. It just needs practice, if I can do it anyone can.
So there you go, you pick a simple circuit, post it here, and design the board, an hour tops.
You can do this.
The transparancies I use are from www.cpc.co.uk, they do all you need, but don't walk before you can run. They are called Jetstar, and they say for Epson printers but am sure must work in any.
Look at www.megauk.com probably a better bet actually and lots of info as well. Before you take the plunge, design a simple board as I suggested, and print on paper, see it all looks O.K.
You have to get used to diptrace, moving and rotating parts, printing the layout with and without component references etc. A boards no good with all the printing on it, shorts everything out
. It just needs practice, if I can do it anyone can.So there you go, you pick a simple circuit, post it here, and design the board, an hour tops.
You can do this.
Mooly said:Hi Gareth,
The transparancies I use are from www.cpc.co.uk, they do all you need, but don't walk before you can run. They are called Jetstar, and they say for Epson printers but am sure must work in any.
Look at www.megauk.com probably a better bet actually and lots of info as well. Before you take the plunge, design a simple board as I suggested, and print on paper, see it all looks O.K.
You have to get used to diptrace, moving and rotating parts, printing the layout with and without component references etc. A boards no good with all the printing on it, shorts everything out
So there you go, you pick a simple circuit, post it here, and design the board, an hour tops.
You can do this.
Cheers, advice taken! I think I will start with a clock design for my 63, seems simple enough to me, then I'll post the design, wait for any comments and suggestions then away to go, no? Or will I wipe my CD out....anyway only one way to find out.
Gareth
Edit..what am I talking about, let's take it easy as you said. A simple single op-amp with a couple of resitors and caps...post it, get suggestions then away to go. You're completely right, learn to walk first.
It's OK actually, This will fun, switching between screens. To draw a line such as my 9volt click "place wire" it's 12 symbols in from right on toolbar. I am doing this now ! Move cursor over where you want line to begin or connect to, left click and "draw" If its just an open ended lead such as power drag it to where you want , right click, and select enter.
Thats brilliant, you have got to play around with this.
Heres one we made earlier
I am going to have to go now, but this PCB is as bad as it get's Again play, I have changed pad sizes, track widths etc and added a nice "copper pour". All this is done straight onto the pcb program. So you will have to find your bits again in the library.
Heres one we made earlier
I am going to have to go now, but this PCB is as bad as it get's
Again play, I have changed pad sizes, track widths etc and added a nice "copper pour". All this is done straight onto the pcb program. So you will have to find your bits again in the library.Attachments
Sorry if this is obvious, click file, and save as etc , give it a name.
Next time you open schematic select, "file" and open recent -- any items you were working on will be there just as you left them when you saved them. If you see what I mean. Play Play and Play, use the normal "edit" on the toolbar to undo anything and keep "refreshing" save as you work.
Must go now, see how you get on
Regards Karl
Next time you open schematic select, "file" and open recent -- any items you were working on will be there just as you left them when you saved them. If you see what I mean.
Play Play and Play, use the normal "edit" on the toolbar to undo anything and keep "refreshing" save as you work.Must go now, see how you get on
Regards Karl
Hi Rellum,
It should be fine on 36 volt rails, I used much lower than that during design.
I know from past experience that it is easy to change something without evaluating it first and then seeing an unexpected problem appear. The BUZ's are I believe "double die" types, in effect two transistors in the one package. That's why they are double the current rating of the 2SK/J. The gate capacitance is going to be higher (double), but I don't think this will cause a problem at all. R27, yes you can drop that, the TLO71 only needs a couple of milliamps + a couple through the zener. 5.6 K 0.6 watt should be fine, R6 to say 82 K with R4 left at 22K. Might be worth dropping R18 and R21 to perhaps 180 ohm becase of the larger gate capacitance, but these are all things you can tweak. And keep these as close to the gates as posible ( very important ).
Regards Karl
It should be fine on 36 volt rails, I used much lower than that during design.
I know from past experience that it is easy to change something without evaluating it first and then seeing an unexpected problem appear. The BUZ's are I believe "double die" types, in effect two transistors in the one package. That's why they are double the current rating of the 2SK/J. The gate capacitance is going to be higher (double), but I don't think this will cause a problem at all. R27, yes you can drop that, the TLO71 only needs a couple of milliamps + a couple through the zener. 5.6 K 0.6 watt should be fine, R6 to say 82 K with R4 left at 22K. Might be worth dropping R18 and R21 to perhaps 180 ohm becase of the larger gate capacitance, but these are all things you can tweak. And keep these as close to the gates as posible ( very important ).
Regards Karl
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.