开云体育

Back when i was a kit there were no cheap tools , in Germany we had all small local stores selling tools and all of it was name brand quality stuff . As far as soldering irons concerned ERSA was the

My father had an electronics business in the 80s. Ham radio stuff, some computer and video game things. That business was mostly wound up by the time I was born, but all the parts and equipment were

For me it was the mid-1960s, when I was in year 9 high school I think. Our 21" STC TV had lost sync. I asked mum if I could have a go fixing it. She looked me in the face and could see that I was

In Argentina we had Lupin Eletronica magazine, I do my first experiments with them. I was 8 yo when started. I do electron tube radio receiver ( very simple ) but my father don’t let me to connect

Ditto. I still have few bits of my EE20 knocking around. I presume you have seen http://www.hansotten.com/electronic-kits/ee-series/ee8-ee20-a20/ and https://archive.org/details/ee20-colour-en I don't

Hi Paul, yes 1949 for me! My Dad was at the Cavendish Labs in Cambridge so I got to cut my teeth on all sorts of discarded electronic bits and pieces, when I was about 12 he got a lift back in the

Growing up in Germany we had shopclass as well as technical drawing , later when I learned a trade we had to go to vocational school once a week and beside of all the electronics stuff we also had

Hi Adrian I think I must be a few years younger than you as I was born in !957 I started learning with the Philips electronic kits think it was called EE8 at the age of 10 but already dismantled a TV

I also grew up in the UK and was at secondary school (age 11-16) in the early 1960s and had the same experience as Paul, because I went to a village college we also had 2 hours a week of what was

Years ago I used ammonium persulphate to etch boards. I had a hard time convincing local chemical distributor I needed it. Appears it is also rocket fuel oxidizer. I used it in a bubble etch tank with

Hi Dave regarding good quality tools and how to use them In the UK when I was at school we had a minimum of 1 and a half hours per week of Metalwork , Woodwork , Technical drawing (total 5 Hours

Laminating the outlines would have the problem of placing them exactly so.? You're dealing with (at least as small) as 4 mm space between tracks and 4 mm tracks.? What many designers do for a 2

Good to know!? Thanks, Ross.Jim FordSent from my T-Mobile 4G LTE Device

Recycle my butt ?lol , when the etchant was Saturated it was dumped down the toilet

Was it possible to recycle the copper removed by these etchants? Was it possible in mass manufacture of circuit boards to laminate copper outlines of the crcuit paths, when there was substantial empty

Well it's good to be known for something, at least. :-) :-) I see your point. I think (and my thoughts on this are evolving with the help of this conversation) that the biggest problem I have is the

No activator, just plain chemical but i used a fishtank heater to warm it up

That's right. If you get too much volume increase of your solution by using it, some can be neutralized and it precipitates copper oxide out. The remaining water is low copper and neutral, so it can

Hi Lothar! Two questions: When you used Ammonium Persulphate, did you have to add an activator (few drops of something) to make it etch faster?? remember Kepro selling a small bottle with their "kit"

And store it outside if at all possible, and not on concrete.? It outgasses and will rust iron or steel. Harvey