[TechAssist] Re: Charging Circuit--Riobi 14.4 drill Charger
- From: "Tel-Tek Electronics" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 23 Sep 2004 13:08:31 -0400
Same thing goes for you...you cheap bugger.
With your money...go out and buy a new one. If he lets you dump your Garbage
in his bin....you have a good starting point.
I sort of kid about this stuff, but you are all starting to realize,
it's really not a worthwhile effort, unless your own time is written off.
But an answer to Secondary would be at least 25 to 30 volts.
-Ed-
Ed Gaidies
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 23, 2004 9:27 AM
Subject: [TechAssist] Re: Charging Circuit--Riobi 14.4 drill Charger
> Speaking of drill chargers, I have one here that I need to replace the
> power transformer in it. The primary is open and no thermo fuse. The
> drill is a Mastercraft (Canadian Tire, ED- your favourite :) ). How do I
> know what secondary voltage to use? The drill is a 14.4V. Off hand, I
> would think that around 18V to 20V winding would be about right. The
> filter cap on the circuit board is rated 35V. Any ideas?
>
> Now to satisfy the "pitch it and buy new theory", this drill belongs to
> a guy who lets me throw all my scrap electronics into his garbage bin in
> return for repairing a few things he brings in. I at least need to put
> in an effort on these items. In this case I do have a number of power
> transformers sitting around doing nothing so parting with one is not a
> big deal and it woulf keep me in good company with the bin.
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
>
>
>
>
>
> Edward Gaidies wrote:
> > Warren;
> > Depending on the Charger, I would presume you have 12.2V from white to
> > red, and 12.2V from white red. The white is normally fed back to the
> > charger to determine when to go into trickle charge mode. The
> > question.....why are you pissing around with this, when you can go to
> > Canadian Tire, and buy a Drill with 2 Batteries and a Charger for
> > $79.95?:-)
> > Reason these Solid State Components have no part numbers on them, is
> > because they are not meant to be repaired, and even if there was a part
> > number, you don't expect to find a Parts Department for this
> > company....do you????
> > Come on...Get with the program;-)
> > I was using a B&D drill for 7 years, Had Internal NI-CAD battery packs
> > (2). When I wanted to replace the battery packs, they were $47 each.
> > The new version of this drill was $49 Retail. You must have a Birthday
> > coming up, or an Anniversary...Treat yourself...and if you can't find
> > your favourite color.....Paint it. HEHE. Typical Canadian.
> >
> >
> > -Ed-
> > *****************************************************************
> > Ed Gaidies
> > Tel-Tek Electronics
> > Ontario-Canada
> > teltek3@xxxxxxxxxxxx
> >
> > On 23-Sep-04, at 7:59 AM, Warren C. wrote:
> >
> >
> >>Are you suggesting that this three legged device in the charger is a
> >>protector of
> >>some kind?
> >>A white wire leads to it. The other two wires are red and black of
> >>course.
> >>When you test for vlotage at the battery itself to this third
> >>connector one finds
> >>that it is almost at
> >>ground potential. It's so stupid when companys take the numbers off
> >>parts!! This
> >>ticks me off!!
> >>
> >>Warren C.
> >>
> >>
> >>Roger G wrote:
> >>
> >>
> >>>Third connector usually goes to a thermal protector or some kind of
> >>>protector
> >>>Roger G.
> >>>
> >>>Mr. Fix-It
> >>>Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com
> >>>rogerfixit@xxxxxxxx
> >>>FAX 510-740-3641; Tel: 717-763-7098 (shop) 717-652-1703(home)
> >>>
> >>>At 11:19 PM 9/22/2004, you wrote:
> >>>
> >>>>I hope no one minds this question.
> >>>>Does anyone have a circuit diagram of this charging unit. The fast
> >>>>charge light does not come on , only the other
> >>>>two lights.
> >>>>I also would like to know what the third connector on the battery is
> >>>>for. When you follow this wire into the charger you come to an output
> >>>>devise (transistor??) that has no numbers on it. (figures eah)
> >>>>
> >>>>My theory is that this devise may be bad and the drill batteries are
> >>>>fine.
> >>>>BTW the main (-) and (+) connections to the battery are on the left
> >>>>and
> >>>>right side and they connect fine.
> >>>>When you test for voltage in the charger at these two points you get
> >>>>a
> >>>>reading of 24.6 V
> >>>>
> >>>>Can you help???
> >>>>
> >>>>TIA
> >>>>
> >>>>Warren Campbell
> >>>>Campbell's TV & Appliances
> >>>>Cannington ON
> >>>>
> >>>>
> >>>>
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