Exploring Ways to Introduce a 20-25 Second Transition Delay Between Red and Green LEDs in My Circuit Simulation.

ericgibbs

Joined Jan 29, 2010
21,546
Hi Am
There are so many errors, I am limited by the Forum Rules on the level of help I can give for a Credits project assignment.

Think of a way to use blocking/steering diodes on the two LM324 Outputs so that they are not linked together.
Also, the Trig input of the 555 requires a capacitor coupling.

E
 

AnalogKid

Joined Aug 1, 2013
12,247
I skipped from page 1 to page 3, so this might have been covered already --

You cannot tie the outputs of two LM324 sections together directly. These are totem-pole outputs, and will attempt to create a dead short between V+ and V-. I have no idea how various simulation programs would handle this, but it probably is incorrect.

Ah, I see that Eric covered this.

ak
 
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