Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Schotty diodes  (Read 2144 times)

john44

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,659
  • member of the Potteries Model boat club
Schotty diodes
« on: December 04, 2014, 12:12:30 pm »

Hi guys, a fellow boat club member is using 2 x 5000mah Nimh batteries to power his Sea Queen
Brushless out runner motor through a 90amp esc. He has them wired in parallel.
I tried to explain it may be dangerous because of (back charging) he said he has found
No problems. I know Action do a P103 which has 20amp double schotty diodes

Does anyone know of a version that will carry more amperage for use on the ever more
Popular hi revving brushless set ups, or part no,s & wiring diagrams for home assembly.


John
Logged

inertia

  • Guest
Re: Schotty diodes
« Reply #1 on: December 04, 2014, 12:31:39 pm »

You could substitute the Schottky diode fitted to the P103 for one of these http://uk.farnell.com/vishay-formerly-i-r/vs-62ctq030pbf/diode-schottky-2x30a-30v-to-220/dp/8657190?ost=8657190
This is 2 x 30A and should cope OK - don't forget that value of 90A is probably the burst current or Chinese amps (or both)! You would best be advised to fit a larger heat-sink; the link includes a suitable one from the same supplier.
Dave M
Logged

john44

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,659
  • member of the Potteries Model boat club
Re: Schotty diodes
« Reply #2 on: December 04, 2014, 06:46:22 pm »

Thanks for that Dave, :-))  but not wanting to seem thick,
how do you wire it into a parallel battery circuit? {:-{


John
Logged

inertia

  • Guest
Re: Schotty diodes
« Reply #3 on: December 04, 2014, 07:55:04 pm »

The two positive connections from the battery packs go to each of the outer legs of the diode. The centre leg of the diode is the "ongoing" positive supply to the load. The two battery negatives are connected together and thence directly to the negative of the load.
Logged

john44

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,659
  • member of the Potteries Model boat club
Re: Schotty diodes
« Reply #4 on: December 04, 2014, 07:59:52 pm »

Thanks Dave :-))


John
Logged
Pages: [1]   Go Up
 

Page created in 0.105 seconds with 22 queries.