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Old 27th August 2010, 11:43 PM   #151
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Quote:
Originally Posted by regiregi22 View Post
P2p wiring is very fun, like some kind of ability and cleverness game. Definitly much more fun than stuffing a board with the marked components in the marked places
P2p is fun, but it looks like **** when it's finished, even when you do it neatly, and if you can get the circuit to work, it's all the more kudos. Mine latest one doesn't work at all, and I haven't worked out why yet. I may have cooked a 2sk170 or a BC550C, and if so, I will never get to the bottom of it without rebuilding from scratch.

What in the hell made me imagine that rebuilding the whole circuit p2p would be quicker and more reliable than mending the PCB is beyond me. Doofus me!
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Old 27th August 2010, 11:53 PM   #152
Salas is offline Salas  Greece
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Yep, P2P looks bad and is especially dangerous when high voltages are involved.
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Old 28th August 2010, 12:05 AM   #153
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That looks neat. Let's see the underside of those boards! that usually tells a different story.
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Old 28th August 2010, 12:15 AM   #154
Salas is offline Salas  Greece
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I normally run a ground bus and a voltage bus soldering along, most are very neat. I did not photograph that unfortunately. The main thing is practice and to test well on scope and FFT.
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Old 28th August 2010, 08:46 AM   #155
m3744 is offline m3744  Taiwan
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Hi salas:

use +/- 20V DCin not too high voltage input?, because dcb1 just use +/- 10v DCin

mikeliu

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You can break the copper connections between + to + and - to - of blue's 4700uF pos and neg filter cap pairs and introduce a 39R 5W per rail between them underneath. With 8R2 5W set resistors where it says 10R 5W, will surely create an around +/-20VDC final DCin to the regs when using a 2x21VAC trafo. Use 35V caps, no less.
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Old 28th August 2010, 09:38 AM   #156
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Exceeding the operating temperature range by heating with a lighter doesn't seem like a reasonable test of stability.
Who said that I've exceeded it?

I though that in p2p constructions boards were not used. Are designs made on vector boards included as P2P builts? A saw them as a transition between PCBs and P2P
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Old 28th August 2010, 09:48 AM   #157
m3744 is offline m3744  Taiwan
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Hi salas:

so we choose +/- 15V AC output trafo right?

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Originally Posted by Salas View Post
You can break the copper connections between + to + and - to - of blue's 4700uF pos and neg filter cap pairs and introduce a 39R 5W per rail between them underneath. With 8R2 5W set resistors where it says 10R 5W, will surely create an around +/-20VDC final DCin to the regs when using a 2x21VAC trafo. Use 35V caps, no less.
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Old 28th August 2010, 11:42 AM   #158
Salas is offline Salas  Greece
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Quote:
Originally Posted by regiregi22 View Post
Who said that I've exceeded it?

I though that in p2p constructions boards were not used. Are designs made on vector boards included as P2P builts? A saw them as a transition between PCBs and P2P
If you connect leg to leg I guess we can call them supported p2p?
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Old 28th August 2010, 11:43 AM   #159
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I though that in p2p constructions boards were not used. Are designs made on vector boards included as P2P builts? A saw them as a transition between PCBs and P2P
I think it's p2p if you're not using veroboard, but a basic matrix of copper dots around a grid of holes. Even veroboard is p2p in my book. If most of your wiring is resistor legs, it's point to point for sure!
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Old 28th August 2010, 11:45 AM   #160
AndrewT is offline AndrewT  Scotland
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Originally Posted by LucasAdamson View Post
I think it's p2p if you're not using veroboard, but a basic matrix of copper dots around a grid of holes. Even veroboard is p2p in my book. If most of your wiring is resistor legs, it's point to point for sure!
This shows there are a variety of opinions.
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