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please help a noob - simple transistor simulation not working
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norq 7 years ago
I did read other threads, I did look at tutorials. I created this uber simple transistor circuit: https://easyeda.com/norq/test_transistor-a44ec9ba694849e084c7208628dcb19c I then simulated it (transient, 1u, 1m). **vout** shows as 12 volts, as if the transistor is off, but my calculations say that it should be on, and that vout should be 5-Vbe+Vce(on), around 4.4 volts ... what am I doing wrong? how can I see it in the simulation? I chose the BC846 from Parts > Search "bc846" > System components > chose one of them Many thanks in advance
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Tutorials 7 years ago
I hope that can help you as below: https://easyeda.com/forum/topic/How_to_find_simulatable_parts_and_run_a_simulation_in_EasyEDA-1YgasK2kC https://easyeda.com/Doc/Tutorial/FAQ.htm#Spice-Simulation-FAQ https://easyeda.com/Doc/Tutorial/Simulation.htm#Spice-Simulation https://easyeda.com/Doc/Tutorial/FAQ.htm#Why-I-cant-simulate-my-schematic https://easyeda.com/Doc/Simulation.htm#Simulation-eBook https://easyeda.com/example/Spice_tutorials-AysKEWevN
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andyfierman 7 years ago
@norq, `I chose the BC846 from Parts > Search "bc846" > System components > chose one of them` As you'll see from: https://easyeda.com/forum/topic/How_to_find_simulatable_parts_and_run_a_simulation_in_EasyEDA-1YgasK2kC the problem is that you have chosen a device that has no simulation model associated with it. All the passive (LCR) devices should simulate OK from any library but the active (including diodes) part must come from the specified libraries or you have to assign the models yourself (as described in the link to the eBook in this post: https://easyeda.com/forum/topic/How_to_find_simulatable_parts_and_run_a_simulation_in_EasyEDA-1YgasK2kC)
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