Re: More charging info here on the CD-24
- Mike, thanks a bunch for posting this very useful piece of info.
It's given me another idea for a mod...
--- In FT897@yahoogroups.com, "Mike Sensabaugh" <mike@w...> wrote:
> Well I disected my CD-24. Comes apart easily, Just 2 tamper proof
torx screws under the label.
> Turns out that there is no need to short pins 2 and 4 when using a
homemade charger like some other posters have suggested. They truly
do nothing. Not even any wires connected in the box.
> Pin 5 is the LED, other leg of LED goes to gnd
> Pin 3 Is +
> Pin 1 is gnd
> Pin 6 Is the Temp Sensor, other leg goes to gnd
> The charger uses a 47C241N 3NF4 chip that reads the temerature and
other info. I have had a hard time finding a datasheet on this but it
seems that the temp sensor is a thermistor. at 70 deg F it should be
10K, I think this is the rating of the thermistors at Radio Shack.
It connects from pin 6 to pin 1, Gnd.
> Oh yea. The CD-24 is very noisy on the HF bands. It absolutely has
no sheilding inside the plastic box or on the cable itself.
> The charger does not turn on unless it sees that 10K thermistor, or
> [Non-text portions of this message have been removed]