Your so right I just new I would do something like that. Apart from the backward rectifier do you think the circuit could work the way it's drawn or do I need to go back to the drawing board ?
use the attached circuit. It works in the simulation and so it should do in a real circuit. (Compare the contactors of the relay in the ON and OFF position. The relay is animated.)
Use an NPN-transistor and a 9.1V zener diode. You might try an 8.2V zener as well. Using a 9.1V zener the relay voltage is between 12 and 13V.
Don't omit the free wheeling diode across the relay coil to avoid frying of the transistor.
Got it. Hero taught me about that well placed diode. But unless you hadn't pointed it out I wouldn't have noticed. Thanks.
My apology's. I should have explained the 2 circuits and my intentions.
Mainly the top circuit is my re-creation of your buffer circuit. But, using my relay. I built the circuit on the bottom now I'm hoping your buffer circuit can latch the (cc1124-nd relay) and pull the 557b to ground and latching the 2nd relay.
In this drawing the ( 5v 300ma ) is coming from the source pin on a special parallel port built by the manufacturer of some equipment.
I was hoping the buffer circuit with my relay in it would work.
So, I have done the correction on the rectifier and removed the switch to show the voltage coming from my equipment if I push a button on or off in the software I get the source voltage High/low.
This is my first circuit here on the site. When it comes to this I'm a fish in a bath tub going round and round.
Ok, so I thought about your circuit and decided that maybe I could pull this off.
The lower Circuit has 12vdc on the board I plan to use it and apply it to an Isolation transformer. Then I also began to look at the circuit and thought maybe with the control voltage it could pull in the transistor 2n2222.
duffy said that and I should just do it. But bancuk said I needed a buffer ? after that I think he re-drew my other circuit or something. Now I'm all confused again.
I built pre-fab. And I guess if I pull the relay in it will burn eventually. But when I manually pulled it in it worked.
So, I figured now all I need is a relay and well you can see what happend.
The bottom circuit. But, I think hero is saying it will just fry anyways the way it's hooked up. So I guess I should build another board the way bancuk is showing me.
But I still need to control it from my port pin 2 with a reliable circuit.
The bottom circuit. But, I think hero is saying it will just fry anyways the way it's hooked up. So I guess I should build another board the way bancuk is showing me.
But I still need to control it from my port pin 2 with a reliable circuit.
Geez, I swear I could Kill for a better operating system.
\\Microsoft, I hate you.\\
I took another hit when the auto updater ? which by the way is not supposed to even look or install an update until.......................... freeeeeking 3:00am in the Gd.....Dm morning.................... freaking hell.
Still ranting : pause :
Ok, done.
Thanks, eric
The relay will do nicely.
I got a relay............. I got a relay today hey hey. ya