user TURBO?s replication of Steven Mark?s TPU ?

[allcanadian]

This parasitic draw is easy to fix though, use coils on the input lines to the transformer and a comparator to measure current. Logic says that if the current draw falls to a predetermined level the appliance is effectively off. So a relay turns it off completely, then a trickle circuit drawing microamps waits for a voltage drop telling it the appliance has been turned on, at which point the relay opens and the transformer can do it's job. As well a Capacitor can use itermitent draw to charge and power LCD clocks and such without the complication of parasitic draw.
Too easy

[groggy]

@Dave,

I'm in the x-mas spirit too, so PM me your address and you will receive one PCB of my 3x555IC tpu board for free!  I have the pcbs in house the 18th so yours will arrive the 22th of Desember, if you want it?



This is a approx. full size view of the PCB.

Can I get one of these PCBs and a parts list so I can add the components or can you supply them as well. Email me at smcdonal@kos.net
Thanks
I am new to this and learning as i go.
Regards
Stan


Alex.

[Groundloop]

[EDIT] Deleted.

[MeggerMan]

Hi Alex,
Please post the eagle design as I can make up my own boards myself.
Have you flood filled the board?
I always find the pads for resistors and caps are very small and I have to edit the part to make them bigger to avoid them lifting during soldering.
200 Euros for 4 boards, thats a lot.
I need to work out a design using 3 XR-2206 chips.

Regards
Rob

[Groundloop]

[EDIT] Deleted.