« previous next »
Pages: 1 2 3 [4]   Go Down

Author Topic: Electrical battery charging question  (Read 6649 times)

0 Members and 1 Guest are viewing this topic.

Offline 1080

  • Hot Shot
  • ***
  • Posts: 414
Re: Electrical battery charging question
« Reply #75 on: January 14, 2010, 04:01:28 PM »
No pilot lamp on this model is that correct?

I see no mention of the charger being used to charge the Auto battery on these pages.

You could post the remaining pages of the manual and measure the rectifier for next post.   
Logged

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,802
Re: Electrical battery charging question
« Reply #76 on: January 14, 2010, 04:09:37 PM »
This charger is intended to charge the 7.2 V packs only.  The 12V connection is a power source for use at a field location that has no 115V AC mains outlet.

As Designed, the unit can use either the 12v source or the 115V source to charge the 7.2V car packs.
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

MötleyRöx

  • Guest
Re: Electrical battery charging question
« Reply #77 on: January 14, 2010, 04:23:03 PM »
No pilot lamp, I don't think.
I thought it may have been a part of the meter, but that has never lit up when the timer is off, so I don't think it trickle charges.

That is all of the instructions.

2tired is correct that the 12volt auto battery is for powering the charger only.  It is quite common for these types of chargers.
Logged

Offline 1080

  • Hot Shot
  • ***
  • Posts: 414
Re: Electrical battery charging question
« Reply #78 on: January 14, 2010, 06:00:04 PM »
Thanks for clearing that up.

Then the bridge rectifier is most likely okay, but you measured 11-12VAC from the transformer secondary windings and after removing the two white wires you got only 10.2VDC on the negative and postive terminals off the bridge rectifier. I think it should be higher?
Logged

MötleyRöx

  • Guest
Re: Electrical battery charging question
« Reply #79 on: January 14, 2010, 06:01:45 PM »


Had to change the meter setting to 200k to get a reading w/in range


« Last Edit: January 14, 2010, 06:33:43 PM by MötleyRöx »
Logged

MötleyRöx

  • Guest
Re: Electrical battery charging question
« Reply #80 on: January 14, 2010, 06:34:13 PM »
Here are the readings.
Logged

Offline Gordon

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 12,114
  • 750K1, 550K2
Re: Electrical battery charging question
« Reply #81 on: January 14, 2010, 06:35:31 PM »
WTF?
Logged

MötleyRöx

  • Guest
Re: Electrical battery charging question
« Reply #82 on: January 14, 2010, 06:36:14 PM »
you speak frog too?!
Logged

Offline 1080

  • Hot Shot
  • ***
  • Posts: 414
Re: Electrical battery charging question
« Reply #83 on: January 14, 2010, 08:01:32 PM »
I say thats very good MotleyRox.

I think the DC voltage is not were I expect to be is because I worked with alot of center tap power transformer power supply circuits.
I will do a little experminent with a 12vac transformer & bridge rectifier I have. I am sure just the Mosfet is blown. Go and resolder those two white wires back onto the rectifier positive terminal.  Order your IRF9Z34NPBF.

Gordon you are in Electronics 101 class. ;D
Logged

Offline 1080

  • Hot Shot
  • ***
  • Posts: 414
Re: Electrical battery charging question
« Reply #84 on: January 15, 2010, 01:25:09 PM »
Just a tip on measuring diodes with your meter, set function to the diode symbol (see photo). Some meters ( like my ) has it on resistance scale.

My little test with a transfomer and bridge rectifier shown 11.88VAC in with 11.3VDC out.

So your set up is okay.

Let me know when you are ready with the new part.
Logged
Pages: 1 2 3 [4]   Go Up
« previous next »