Good Day All
To make this brief as possible so as not to take up to much of anyone's time:
I have two 555 timer type circuits that I want to combine to form one new circuit.
I have included both circuits in PDF and LTspice files in the Zip file attached.
I have spent many hours trying to find my mistake with these two circuits.
I know both circuits work. As they simulate when separate just fine.
The problem is when I try to make both circuits run off of the same power source in LTspice.
The circuits do not give the required output. In other words when combined they no longer function as when running separate.
I have included also my best attempt at combining the two circuits. It doesn't simulate correctly either.
The first circuit (left side) on the sheet is just a hi-low voltage disconnect which activates a simple relay to run the load.
The second circuit (right side) is a time delay and LED flasher to show the status of the relay.
The first circuit can have it's relay and supporting transistor removed and the output from second 555 going directly to activate the second delay/flasher circuit. This is what I attempted to do in the second file/PDF where both circuits are seeming united.
I would appreciate any thoughts or insights on this.
I am surely overlooking a very simple solution, although I have spent almost two days on this now.
Thanks in advance.
Lost_br0
To make this brief as possible so as not to take up to much of anyone's time:
I have two 555 timer type circuits that I want to combine to form one new circuit.
I have included both circuits in PDF and LTspice files in the Zip file attached.
I have spent many hours trying to find my mistake with these two circuits.
I know both circuits work. As they simulate when separate just fine.
The problem is when I try to make both circuits run off of the same power source in LTspice.
The circuits do not give the required output. In other words when combined they no longer function as when running separate.
I have included also my best attempt at combining the two circuits. It doesn't simulate correctly either.
The first circuit (left side) on the sheet is just a hi-low voltage disconnect which activates a simple relay to run the load.
The second circuit (right side) is a time delay and LED flasher to show the status of the relay.
The first circuit can have it's relay and supporting transistor removed and the output from second 555 going directly to activate the second delay/flasher circuit. This is what I attempted to do in the second file/PDF where both circuits are seeming united.
I would appreciate any thoughts or insights on this.
I am surely overlooking a very simple solution, although I have spent almost two days on this now.
Thanks in advance.
Lost_br0
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