I'll other that but the Fulson pcb must be investigated because getting sparks is a safety risk
You push the lever with a finger or a screwdriver and the you insert the wire.
https://www.wago.com/infomaterial/pdf/51184677.pdf
YouTube (Found by Google)
I see some bad joints in the second picture. Don't be afraid to heat up the soldering points. Use two soldering irons if you have. Personally I use a 135 W iron.
Thanks, I thought so. The joints closest to the edge. I'll redo them.
If you use a 135w iron then I should be able to crank up my Hakko station to 750F.
I've been worried about frying parts with it that high. On some of the rectifiers I tried using an alligator clip/solder braid as a heat sink on the top side of the pcb.
Do I need to use it 😕.
Last edited:
The DCT03 pcb doesn't need any insulation washers so you can use metal screws and spacers only. Why does the green board need nylon washers? Too small creapage distances?
Thanks, I'll remove the washers on the DCT03.
On the Fo-Felix pcb's (Rev #1) there was not enough clearance around the mounting holes so it was suggested to use nylon washers above and below the pcb.
I have several Rev #1 pcb's.
That has been fixed in Fo-Felix Rev #2.
Diodes 1 or more in series
Your design allows 1 to 4 diodes to be string in series.
I understand having more diode strings in parallel increases current capacity.
Is there an advantage in just using 1 diode in each string - in that it limits the voltage drop across the blocker capacitor to just the Vf forward voltage drop of the 1 diode. Which then results in lesser current thru the cap and a lower voltage rated cap with smaller size - so that I can use larger capacitance caps with even higher ripple current rating?
Your thoughts greatly appreciated.
Denis
Dear P-A
Your design allows 1 to 4 diodes to be string in series.
I understand having more diode strings in parallel increases current capacity.
Is there an advantage in just using 1 diode in each string - in that it limits the voltage drop across the blocker capacitor to just the Vf forward voltage drop of the 1 diode. Which then results in lesser current thru the cap and a lower voltage rated cap with smaller size - so that I can use larger capacitance caps with even higher ripple current rating?
Your thoughts greatly appreciated.
Denis
You can't find 4 V caps or 1 V for that matter. I recommend 10 or 16 V to be safe. How many diodes you use is only a matter of cost and ripple current capacity. Four diodes in series allow you to have smaller caps and at the same time catch higher a DC voltage.
Oh I get it. You are saying that if mains DC offset is higher than Vf of a diode, the diode will conduct and DC blocking by the caps is compromised. Thus you string several diodes in series to achieve higher effective Vf to deal with mains DC offset up to 4V.
Hi torb,
That looks great. Glad you posted a photo. Did you hook up the DCT03 to all 3 Fo-Felix boards?
I'm not sure if I should hook my DCT03 up to all 3 Fo-Felix boards or just the one that has the 17amp bourns coil that drives my power amp.
What are the other 2 boards in your build?
That looks great. Glad you posted a photo. Did you hook up the DCT03 to all 3 Fo-Felix boards?
I'm not sure if I should hook my DCT03 up to all 3 Fo-Felix boards or just the one that has the 17amp bourns coil that drives my power amp.
What are the other 2 boards in your build?