I cannot see which connects to what on your messy tangle of wires on the breadboard.
Thank you for watching the video. In the video I used a 1k resistor and a LED for both the output pins ie, pin 5 and 9. For the pictures, I replaced the resistor and LED and used a LM317 to create a constant current source delivering 100mA and 170mA of currents at pin 5 and pin 9 respectively. My problem is creating the LTSpice schematic and simulation. That's why I need some help.The video shows two LEDs working properly.
The last photo of the messy breadboard shows only one LED and it does not show a resistor from pin 8 or pin 10 to +9V.
Do you have the file with you? I don't have much help because this is a problem my teacher wants us to solve.......LTspice sees a box with tiny writing (NE556?) in it. It does not know anything about it until you give it a file of its model.
Ask your teacher how to add the model file of an NE556 to your LTspice circuit.
are you comfortable to simulate this ckt using any other spice software? I'll greatly appreciate it.LTspice did not exist when I went to school. I learned how to use it myself but I do not use it much because:
1) It uses only "typical" spec's for devices then the circuit fails when the devices you buy have minimum or maximum spec's.
2) It does not know about maximum allowed current or maximum allowed heating of devices which blow up of you do not read the spec's and calculate current and heating yourself.
This is not homework?I already have the schematic, I cant seem to run the simulation because this is not a homework and no one is teaching me these tasks. I am science student learning electronics as a hobby. Taking courses online!
Do you have the file with you? I don't have much help because this is a problem my teacher wants us to solve.......
Post the schematicI already have the schematic, I cant seem to run the simulation because this is not a homework and no one is teaching me these tasks. I am science student learning electronics as a hobby. Taking courses online!
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by Mark Hughes
by Jake Hertz