Re: Wheelchair proximity detection

[nobody@xxxxxxxxxxxx (Dave Houston)]

If done properly the 7805 will also require a few extra parts.

"AZ Woody" <Reply@xxxxxxxxxxxxxx> wrote:

>With a LM7805, it's one device (not always a chip), as the Lm7805 is
>available in a to220 package.  Two wires to one of the 12v bats, and two
>wires at 5v.  The Lm317 will require a few more parts.
>
>
>"David Norwood" <judapeno@xxxxxxx> wrote in message
>news:EjTzg.7273$jt.6679@xxxxxxxxxxx
>> Is it really as simple as connecting the input and output voltage wires to
>> this one chip, or do I have to design a circuit around it (which I don't
>> know how to do)?
>>
>> David
>>
>> "Dave Houston" <nobody@xxxxxxxxxxxx> wrote in message
>> news:44cff736.1260558828@xxxxxxxxxxxxxxxx
>> > "David Norwood" <judapeno@xxxxxxx> wrote:
>> >
>> >>Is there a < $50 module that converts 24 vdc to 5 vdc?
>> >
>> > A linear regulator chip (e.g. LM317) can handle this for less than $1.
>> >
>> >     http://www.mouser.com/search/refine.aspx?Ntt=lm317
>> >     http://www.st.com/stonline/books/pdf/docs/2168.pdf
>> >
>>
>>
>