Need help reading a schematic.

[Spork Schivago]

Re: Need help reading a schematic.

i am going to recap a vectrex soon - just wanted to share

Do you get to keep it or is it someone elses? That's nice man. I have a friend who's father has an Osborne (1 I think). I'd love to find one of those Executive's but I don't even know if any exist. Very few where actually sold because Osborne ended up filing bankruptcy. Some people contribute the fall of his company to the Executive. He was showing it off to Journalists before it was ready and people that had pre-ordered the Osborne canceled their order. They decided to just wait until the Executive was released. Sales dropped a lot. It was something like in one month, the Osborne 1 went from 1,200$ to 900$ (and change). I've been trying to get the Osborne off my friend for a few years now. Still no luck though.

[stj]

Re: Need help reading a schematic.

LOL! I usually feel like I'm 90! I can't imagine how I'm going to feel in 10 years from now! Maybe I should work on becoming angry to help me stay young and fit.

just put the tv news on for 10min's that will get you angry for a week!
dont overdose!!!

[stj]

Re: Need help reading a schematic.

i am going to recap a vectrex soon - just wanted to share

[Spork Schivago]

Re: Need help reading a schematic.

i never grow old, my anger keeps me young and ready!

LOL! I usually feel like I'm 90! I can't imagine how I'm going to feel in 10 years from now! Maybe I should work on becoming angry to help me stay young and fit.

[Spork Schivago]

Re: Need help reading a schematic.

So you already bought the kit? It comes with step down power transformer?

I did buy the kit but I'm still waiting on a few things (the UV LED PCB and the UV LEDs for it). I got the timer kit already finished. The guy was selling multiple kits. For example, the timer was one kit. Then there was the UV LED PCB kit. Finally, there was a power supply. I have the timer already finished and I have the PSU. Here's a link to the PSU. http://www.e-stynus.com/index.php?ma...products_id=60

I think originally he designed the PSU himself but later decided to just use a pre-manufactured one. It's a 15V, 36 Watt DC power supply, model number: MW-RS-35-15.

[Spork Schivago]

Re: Need help reading a schematic.

Seen it? I've got the tools and wire to do it. A lot of old Pioneers from the seventies have wiring done that way. I try to keep them like original. I'm afraid sixty is getting real close in my windshield.

I absolutely love older PCs and electronics. I think they're a thing of beauty, in all honesty. Got a TRS-80 and a few Commadore 64's. I'd love to get a 128 one of these days but they're getting harder to find. I need a new bezel for my TRS-80 but RadioShack, last time I called, said they no longer carried the parts. I've scoured the internet but couldn't find one. :'(

I remember when I was a child, I used to tear stuff apart, trying to figure out what made it tick. I remember tearing something about and there was this numerical display. Kind of like the 7 segment LED displays but this thing had miniature glass tube like things that would light up. They where stacked on top of each other. One was a 1, then a 2 on top of that, a 3, etc. I thought that was freaking amazing.

[stj]

Re: Need help reading a schematic.

Wow, if you've seen that stuff before, you must be really old!

i never grow old, my anger keeps me young and ready!

[budm]

Re: Need help reading a schematic.

Like how the timer board hooks up to the power supply and the UV LED PCB? Or do you mean a board layout for the timer board? I just looked on the site for a hookup diagram, that shows how the timer board connects to the UV LED board and to the power supply. I found one. Here's a link to it:

http://www.e-stynus.com/index.php?ma...umentation&p=8

I've also attached a copy of the picture so you don't have to leave this site to see it.

I've also found on the site a picture of the board layout in what appears to be Eagle.

So you already bought the kit? It comes with step down power transformer?

[rhomanski]

Re: Need help reading a schematic.

Seen it? I've got the tools and wire to do it. A lot of old Pioneers from the seventies have wiring done that way. I try to keep them like original. I'm afraid sixty is getting real close in my windshield.

[Spork Schivago]

Re: Need help reading a schematic.

lol
that's a VERO-pen / RoadRunner.
not seen that shit in decades!

Wow, if you've seen that stuff before, you must be really old! Or maybe you just have experience working on older stuff. By most people's definition, I believe I'm what they call a youngin'. 34 years old (soon to be 35 in a few more months).

[Spork Schivago]

Re: Need help reading a schematic.

Do you have the wiring diagram that shows how the board is connected to the rest of the stuff?

Like how the timer board hooks up to the power supply and the UV LED PCB? Or do you mean a board layout for the timer board? I just looked on the site for a hookup diagram, that shows how the timer board connects to the UV LED board and to the power supply. I found one. Here's a link to it:

http://www.e-stynus.com/index.php?ma...umentation&p=8

I've also attached a copy of the picture so you don't have to leave this site to see it.

I've also found on the site a picture of the board layout in what appears to be Eagle.

[stj]

Re: Need help reading a schematic.

Are you talking about stuff like this?

https://upload.wikimedia.org/wikiped...ormat_1977.jpg

That's freaking old school! Wow. Do people still do that stuff? I got an old tube amp I'm supposed to fix for my buddy that's wired that way.

lol
that's a VERO-pen / RoadRunner.
not seen that shit in decades!

[budm]

Re: Need help reading a schematic.

Do you have the wiring diagram that shows how the board is connected to the rest of the stuff?

[Spork Schivago]

Re: Need help reading a schematic.

Are you talking about stuff like this?

https://upload.wikimedia.org/wikiped...ormat_1977.jpg

That's freaking old school! Wow. Do people still do that stuff? I got an old tube amp I'm supposed to fix for my buddy that's wired that way.

[Spork Schivago]

Re: Need help reading a schematic.

Thanks! What the heck are wire wraps? I have a soldering station and solder components. I soldered all the components on the timer board already using my Weller. When I was younger, I had the hardest time soldering! I never had any teachers or anything. I had to learn it all myself until I found this place. It was insane, I tried adding solder to the iron and then touching the iron to the components (you can do that with SMD type stuff now a days but back then, it didn't work worth a darn!). I tried warming up just one terminal and adding solder. I gave up many times before I realized you had to touch both the pad and the lead at the same time and then apply solder!

A lot of great teachers here.

[keeney123]

Re: Need help reading a schematic.

You'll get just hang in there. You have some good teachers. Are you using wire wraps or soldering?

[Spork Schivago]

Re: Need help reading a schematic.

I think I understand it a bit more now. Voltage comes in from the house at the X1-1 and X1-2 connector. It goes through the bridge rectifier B1 (B80C800DIP) which converts it from AC to DC using 4 diodes. It then powers the IC1 7812 voltage regulator which in turn powers the IC2 7805 voltage regulator. 7805 produces 5 volts and powers the PIC on pin 14 and also powers the LCD screen on pin 2 and pin 15. Pin 2 on the header is for the LCD's VCC, Pin 15 is for the LCD's backlight. It also provides 5V to the POT, which in turn controls the resistance going to the CONTRAST net on the connector that goes to the LED. Looks like the voltage regulator IC2 (7805) also powers the speaker there.

Is this right so far?

[Spork Schivago]

Re: Need help reading a schematic.

Okay, I think I got it. The relays power the UV LED boards. I don't know what I was thinking thinking that they powered the voltage regulators. I still got a long ways to go with learning this stuff but I figured this would be a good schematic to test my knowledge with. Hopefully, one of these days in the near future I'll be able to not only fully understand it, but also be able to modify it a bit.

[budm]

Re: Need help reading a schematic.

Thanks BudM. And then does one of the relays power the voltage regulator IC2 (7805) to provide the 5V that drives the LCD screen? Or am I way off on that?

No.

[Spork Schivago]

Re: Need help reading a schematic.

Thanks BudM. And then does one of the relays power the voltage regulator IC2 (7805) to provide the 5V that drives the LCD screen? Or am I way off on that?