Author Topic: darlington transistor in ltspice  (Read 441 times)

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Offline vivi-dTopic starter

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darlington transistor in ltspice
« on: May 22, 2024, 02:48:26 pm »
I'm following this tutorial on digikey:  https://forum.digikey.com/t/how-to-test-transistor-characteristics-in-ltspice/3015

Everything seems to be working, but when I insert another transistor to make it a darlington, nothing changes on the DC sweep analysis...

What gives?
The nastier the flux, the shinier the solder!
 

Offline soldar

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Re: darlington transistor in ltspice
« Reply #1 on: May 22, 2024, 03:54:55 pm »
Try a voltage source instead of a current source?
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Online Fgrir

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Re: darlington transistor in ltspice
« Reply #2 on: May 22, 2024, 06:50:23 pm »
Q1 emitter/Q2 base shouldn't be connected to ground
 
The following users thanked this post: SiliconWizard, soldar, vivi-d, BrokenYugo

Offline vivi-dTopic starter

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Re: darlington transistor in ltspice
« Reply #3 on: May 22, 2024, 07:09:31 pm »
 :palm:
Thanks!
The nastier the flux, the shinier the solder!
 

Offline soldar

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Re: darlington transistor in ltspice
« Reply #4 on: May 22, 2024, 10:59:04 pm »
Q1 emitter/Q2 base shouldn't be connected to ground

How could I miss that?!
All my posts are made with 100% recycled electrons and bare traces of grey matter.
 


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