This looks good. A little late for me. I'm using two perf-boards. One for power for the I/O.
For power I found a 15V "medical grade" power supply at All Electronics. They also sell a 1A EIEC power input filter that is pre-wired with a connector that fits the both the supply and a fuse holder. It's pure luck that the wire harnes works. the PS is $11, the IEC filter is $0.50 anf the fuse holder under $1. Then I use a LM7805 for the 5V supply. Digikey has the same PS for just under $40. Radio shack sells a 100uH 2.5 amp choke for $1.50. I put one of these and some 0.1uF caps on the incoming power but I don't know it that helps much. Had I known about your board I've have used it and a 18 or 19V notebook computer power supply. But the package from All is easy and they ship fast. On Thu, Jan 12, 2012 at 1:09 AM, gonzo . <cadbl...@hotmail.com> wrote: > > > Hi All, > like many on the list I picked up one of the current > batch of cheap EF-5608A's. > Not being clear where I would end up using it, I laid > out a breakout board to make it easy to play with on the bench, but with the > expectation that it would remain attached when I got around to mounting the > Rb > in a box (or where ever). > > In summary, I've used two VRegs: > - > LM1084Adj for 15V (pin compatible with LM317, but rated for 5A) and an > AMS1117-5 for the 5V. > - The regs can be fed individually or jumpered to run > the 1117 from 15V. This works, but both regs run fairly hot. > - 1PPS and LD > are brought out to individual headers. > - 10MHz has an SMA. > - RS232 is > given its own D9 wired for 2, 3, & 5 (TX, RX, Gnd) for a standard > cable. > > In the process of laying out the board, I discovered another > "undocumented feature" of this batch of '5680A. For reasons unknown, the D9 > is > 3.5mm (1/8") higher than shown on the data sheet. Normally this would not > matter, but I'd positioned the connector on the PCB maintaining the low > profile. Not a big deal, but irritating all the same. > > Having read > several tales of woe resulting in blown components. I thought I'd offer my > spare boards in the hope of keeping the smoke where it belongs. > I've got 9 > remaining PCBs and the last of the components should arrive in a week or > so. > The cost for a complete kit is aud$10 and $5 for DX postage. I have no > idea what level of interest (if any) there will be, but I can always order > more boards if there is a demand. > > One thing to note is that this board > is designed for the current batch of FE-5680A with the following pinout: > 1. > +15V (~1800mA cold: ~800mA hot) > 2. Gnd > 3. Rb Lock (lock = low) > 4. +5V > (~85mA) > 5. Gnd > 6. 1PPS (high until Rb Lock goes low) > 7. 10Mhz > 8. > RS323-RX > 9. RS232-TX > > Please contact me off list if you are > interested. > > Cheers, > ian > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.