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cosyne - Did you ever find a solution for this ? I have the same situation, I need several large top-layer pads for direct wire-bonding. I want solder mask in place, but NO paste openings.
-pana
Keep in mind that Pr0tel 99SE has been End-of-Life'd by Altium. In fact, no more support for it at all, no email, phone, nada.
They want everyone to move to DXP 2004.
Heh, I still use 99SE. 2004 is a little too expensive, and really requires a honking powerful system. I'm looking at...
I'm not a motherboard designer (phew!) so I don't need to do incredibly dense 12-layer boards :)
I didn't realize C@dstar was that cheap. I'll have to take a closer look at it. Do you have any sources for good tutorials and docs for it ?
pulsonix symbols
Hi All -
I've been playing around a little with Puls0nix for a few days now, and it really does look good. I'm usually a Pr0tel 99SE user, and have found that the new DXP2004 really looks nice, and has a few very good new features, but on the whole, it takes longer to do...
P*otel Pad Holes
Umm, what exactly do you mean ? It does put the holes in the center of the pad, round or rectangular.
Ah wait, do you mean for it to put no copper in the artwork for the hole ? If so, there is a checkbox on the properties of the final drawings output to "Show holes". Make...
Hmm - I thought it was usually the other way. The + side of the device was switched, and the - side was connected directly to the chassis.
That way you only needed one wire to the device. If you switch the - side, you need a wire to the +12V of the battery, and 2nd wire to the switch for the...
Dang, I'm out of room on the pcb :( High-side switching is nicer since you only need to send the switched +12V wire out to the siren. The GND lead on the siren can go right to the body of the car.
If I go with an N-ch fet to switch the GND lead, I'll have to send both +12V and GND wires out...
Anything special to keep in mind with this ? I'm assuming to run the micro IO pin to the gate via a 1k resistor, Source to +12V and Drain to siren +input. Siren -input to GND.
-pana
OK, got one to test with. Strange results ... On the breadboard I have it as this :
tip110 collector to +12V (+ of battery)
tip110 emitter to plug A
tip110 base to 1k resistor with switch to +5V
other side of resistor to GND
plug B to GND (-ve of battery)
Put voltmeter across GND/-ve and...
Hi -
Is it possible to use a darlington transistor (Tip110) as a switch ? I want to switch a fairly high-current load at 12V using a microcontroller output pin at 5V. It's a 12V car siren.
I don't actually have a TIP110 here right now, or I would try it.
Darlingtons are usually used for...
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