Subject:
|
Re: DC adapter
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Thu, 4 Sep 1997 19:16:49 GMT
|
Original-From:
|
Fred G. Martin <fredm@media/IHateSpam/.mit.edu>
|
Viewed:
|
1258 times
|
| |
|
|
Good question. Answer:
DO NOT USE REGULATED ADAPTERS WITH THE HANDY BOARD.
I will add this to the FAQ, because it is not obvious, but the HB
power circuitry was designed explicitly for CHEAPO UNREGULATED WALL
WARTS ONLY.
sorry,
Fred
In your message you said:
> Hi all,
>
> Just another (hopefully unanswered) question about the DC adapter:
> Do the specifications stated in the FAQ (18 volts unconnected) also
> apply to _regulated_ adapters, or only to unregulated?
> I'm asking this because I just bought a new assembled Handy Board, an
> when I plug in my DC adapter (regulated; set to 12v, 595mA; measured
> ~12v unconnected) into the serial interface and connect the interface to
> the HB, the "charge" led simply won't go on, as long as the HB turned
> "off"! Anyone out there know why?
>
> My second question is, can I use other than the suggested batteries
> (500mAh, mignon) to power the HB and its connected motors (for example,
> 750 or 1000mAh)? My HB always resets when the 2(!) LEGO-motors have to
> do a bit harder work.
>
> Thanks,
> Jan Lellmann
>
|
|
Message has 1 Reply:
 | | Re: DC adapter
|
| (...) Isn't this a bit sweeping? Surely the problem is that a 12v regulated supply will not have enough headroom with a 9.6V battery. I use a 7.2V battery without problems (that I am aware of).It is not the regulation that is the actual problem but (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
|
Message is in Reply To:
| | DC adapter
|
| Hi all, Just another (hopefully unanswered) question about the DC adapter: Do the specifications stated in the FAQ (18 volts unconnected) also apply to _regulated_ adapters, or only to unregulated? I'm asking this because I just bought a new (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
|
5 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
