JLH Ripple Eater Build and Support Thread

I can't get the link above to work. How much is it for 10 boards and what is the PayPal address?

Manual Here

www.rock-grotto.co.uk/rock-grotto-ripple-eater.pdf


Cheers

Jon

I now have 2 of Jon's and Will's JLH PCBs sitting in front of me, and they look very nice indeed. They look very classy with the gold soldering pads.
I will build 2 +VE versions up over coming days with the capacitors laying down this time, as I would like to try stacking them.
I know that I will only be confirming the results from both Will and Jon where everything went together without any drama, and worked first go.
Jon, do you want me to put them together using the Current Limiter?
I intend trying them in the SC DAC with the CL bypassed.
Alex

ROCK GROTTO JLH Build 24-07-2010

I finished the 2 PCBs in the photo this morning.
The only minor niggle I had was aligning the 2 pin terminal blocks for soldering, as the holes were a little too large.
The voltages on the only PCB that I have tested so far, were pretty much in agreement with Jon's readings. I used my dual regulated bench supply at +15V for initial testing, as it has an overload feature.
I was very happy to see the digital meter on the bench PSU register an initial momentary drop in voltage as the PCB was switched on.
For me, this is always a good omen. As both PCBs were constructed a stage at a time, I expect the other PCB to have no problems either.
I configured both PCBs without the Current Limiter , and as +VE rail versions.
Although I used 2 x 4,700uF Low ESR capacitors in parallel, none of the transistors became more than a few degrees warmer than the ambient temperature .
Alex

I used a small strip of insulating tape to position the terminals. It worked fine. If we can customise our EAGLE terminal models to suit, then that will be very helpful for future projects.

Cheers

Jon

Thanks for sharing that pic Will, it's just what I wanted to see. The measurements are very useful too, particularly in my case where case height is very tight.

Do you think there is any way I could get away with 17mm spacers though - maybe by leaning the TO220's a bit? If so it would be perfect - I could then use 5mm spacers on the bottom and still have a couple of mm's to spare below the ceiling.

Ken

Ken,

You can also lay them on their side and bolt them to a side panel or "L" bracket mounted to chassis base. That's if you have more "floor space" than height.

It also means that the caps, instead of laying down on the job, will hanging like fruit bats inside the dark box

Ditch the case and buy a bigger one?

It may be the only logical solution to your dilemma....

Very nice and professional - but for what you use three JLH Ripple Eater?

The board on the top of the 3 has no resistors. Is there a reason?

Will. Where did you get the deal on the toshiba 5171/1930? How much each were they?