[woffler]

Hi everyone i am trying to build a circuit here and i have a schematic on page 129 of the attached pdf manual .I tried to figure it out but i am lost ! it has a 74LS06 chip in it but from this i can not tell if there are three or one chip. I also am not sure what wires go to what pins on the thing .Could some one please lend a hand with this and explain this to me .

[woffler]

Sorry the file did not come threw i will try again.

[woffler]

I think i got it .

[john-100]

Hi Woffler

the circuit is using half of the 6 inverters in the 7406

John

PS they are open collector outputs , in some circuits you need a pull up resistor

from the +5v supply to the output

[woffler]

Thank's John i get it now ,i can see the pin out and how it work's thank you so much i can finally finish this project .:wee::wee:

[john-100]

if it helps I've re arranged the circuit

John

[woffler]

Hey John that help's a lot ,it will take no time at all to make this up now i would like to thank you for all your help you have been of great help to me on this and i am sure others will be grateful as well.

[woffler]

Hi John i have a question on the chip do i hook 5+ to the LA1 pin and LY2 pin and so on or do i need something on the Pin 7 and pin 14 to turn it on and off still trying to figure it out?

[john-100]

connect the +5V supply to pin 14
and 0V (gnd) to pin 7

connect the 3 inputs to +5v ,via one of the three 2200 ohm resistors
( input 1 = pin 1 , input 2 = pin 3 , input 3 = pin 5 )

connect the probe to pin 1 (the first input)

link pin 2 to pin 3 and link pin 4 and pin5

connect the touch plate inputs and the B.O.B input to pins 2 and 3

the LED and 560 ohm resistor from +5v to pin6 (output 3)

the unused inputs (pins 13,11,9) can be left not connected
or connected to one of the supply pins (7 or 14)

see the diagram

John

PS with the 7406 open collector outputs it is safe for the touch plates
to short circuit pin 2 to the 0V (gnd / pin 7 )

[woffler]

I finally got around to wiring it all together today and it works ! this would be a first for me. I would like to thank you John for all the help it sure made this a lot easier.

[john-100]

thats great :wee:

a successfull little electronics project

and a handy little tool for your machine

glad I could help

John