Help designing a latching electronic switch

[John Fields]

On 26 May 2005 16:00:02 -0700, "Chris" <cfoley1064@yahoo.com> wrote:

` VCC VCC
` + +
` | |
` | |
` .-----------------------. - C|
` | | ^ C|
` | | | C|
` | .--------. | | |
` | | | | | |
` | | === | '---o
` | .-----o------.GND | |
` | | S | | ___ |/
` '----oD Q o--------|___|- -| TIP120
` | | | 10K | |
` | 1/2 4013 | | .-. |
` | | | | | |
` A>---------o CLK | | 10K| | |
` VCC | | | '-' |
` + | | | | |
` | | | | | |
` .-. | Q'o-----' === ===
` 10K | | | | GND GND
` | | | R |
` '-' '-----o------'
` | |
` o-----------'
` |
` .1uF ---
` ---
` |
` ===
` GND

---
Didn't notice it the first time around, but the sense of the power-on
RESET is wrong. The way it's shown the 4013 will stay in RESET as
long as power is applied.

--
John Fields
Professional Circuit Designer

 

[John Fields]

On 4 Jun 2005 01:23:03 -0700, "William" <williamdob@hotmail.com>
wrote:

make a drawing at www.yahoo.com ( a 100dpi scannerdrawing will do fine
) ; go to the mailbox the ID is
'schetsen' and the password is 'diverse'. send the drawing to the same
mailbox 'schetsenATyahoo.com'
and I'll see what I can do for you ( for free of course )

---
Why don't you read the entire thread and any binaries posted to abse
and then, if you have someting to say, post your comments here for
everyone to see?

--
John Fields
Professional Circuit Designer