JASONDOESITALL Adapter for 17" ADC CRT Monitor

[Appelsientje]

I'm a longtime lurker at this forum and this is my first post. I would like to thank the community, all the posts here have been incredibly helpfull to me.

I'm building a JASONDOESITALL adapter for my 17" ADC studio CRT (the clear acrilic one). I have all of the components so it's time to order the PCB itself.

On the jlcpcb website I can choose between 1 oz. copper and 2 oz. copper. The 2 oz. Copper is almost 10 times more expensive.

Does anyone know if 1.oz is sufficient for this adapter?

 

[Kai Robinson]

1oz copper should suffice, 28v DC is what the ADC uses - https://www.digikey.co.uk/en/resources/conversion-calculators/conversion-calculator-pcb-trace-width

Use that calculator to find out if the trace widths will carry the current load.

 

[Appelsientje]

Are you sure about the 28V? The power adapter that gets recommend is 24Volts and 5 ampere.

Also, what should I enter in the temperature rise field. I'm completely new to this.

 

[phunguss]

I don't know about the CRT model, but all the LCD models work fine at 24v. I haven't seen actual 28v come out of any of my G4 tower ADC connectors.

 

[Appelsientje]

Maximum Continuous Power: 113W is what the CRT is rated for.

24v and 5 ampere should be able to deliver 120W is my math is correct.

 

[wottle]

I built a few of these and never had much luck with them. I did put one together and sent it to another user on this forum who was able to get it mostly working on a Windows machine, including things like degaussing the CRT. There is some ambiguity in the instructions and I feel like I assembled 3 of these and each one was different. Might be nice to put together a guide to make it clear how to make a working adapter.

 

[François]

IIRC the ADC CRT is fixed frequency. It’s complicated to use with anything that is not a Mac, unless you can control precisely the frequencies that your video card can output (especially during the boot sequence).