Schottky Diode D1

Question about power
danlee58
Posts: 210
Joined: Thu Jan 17, 2013 2:29 am

Schottky Diode D1

Postby danlee58 » Thu Dec 22, 2016 7:50 pm

What is the function of Schottky Diode D1 (MBR0520) on the Super Pro board. The diode on my board seems to be open, and I can no longer power my board through J4. Can I simply jumper around that diode, my source is regulated 7.0 Volts?

basicchip
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Joined: Fri Oct 19, 2012 2:39 am
Location: Lake Tahoe, CA
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Re: Schottky Diode D1

Postby basicchip » Fri Dec 23, 2016 4:51 pm

D1 prevents connecting an incoming power supply from being connected backwards. That is a pretty beefy diode, if it had not blown you probably would have completely destroyed the board. So you should think about what you were connecting up when that part failed.

danlee58
Posts: 210
Joined: Thu Jan 17, 2013 2:29 am

Re: Schottky Diode D1

Postby danlee58 » Sat Dec 24, 2016 2:28 am

I mis-mated the the Arduino J1 power pins. I probably connected +5V to ground. The 7805 survived, but D1 is gone. I'll just jumper it out. I have a board that plugs into the Super Pro, but it's a 0.1x0.1 perf board, and the mating is not perfect with the Arduino. I have to live with that until I get a PC board made.

danlee58
Posts: 210
Joined: Thu Jan 17, 2013 2:29 am

Re: Schottky Diode D1

Postby danlee58 » Sat Dec 24, 2016 2:59 am

I would really like to get a 0.1"x0.1" perf board with the 6, 6, 8, & 6 Arduino pins. The 0.1x0.1 area should be connected in a matrix, and lands should connect to the Arduino pins.

I could eliminate this mating board with a redesign of the 3rd board in the stack.

basicchip
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Joined: Fri Oct 19, 2012 2:39 am
Location: Lake Tahoe, CA
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Re: Schottky Diode D1

Postby basicchip » Sat Dec 24, 2016 5:14 pm

All of our boards connect the Arduino mistake offset pins to a parallel 0.1 x 0.1" pattern, so you can use an off the shelf perf board.


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