Project 15. Transistors As Switches

180

03:55:31

Maxitronix 330in1 Electronic Lab, with bulb replacing the 7-segment LED, which is not properly simulated in this app. This transistor is biased to operate between the extremes of cutoff and saturation, meaning it's either full-open or full-shut. Forward-biasing the base-emitter junction shuts the 'switch', lighting up the bulb.

published 5 years ago

Robert_Kidd

5 years ago

In what way fo you think a LED ‘is not simulated correctly in this app’?

h_kane

5 years ago

Please see my "Magic LCD Display" for your answer. I occurs to me that maybe this is simulating an LCD, not a display made up of LEDs like I originally assumed. Either way, it's PFM.

Robert_Kidd

5 years ago

I looked and commented. Led simulation is fine.

h_kane

5 years ago

As did I. It's an LED based 7-segment display, and is not simulated properly

Robert_Kidd

5 years ago

Incorrect.

BillyT

5 years ago

@h_kain, what everyone is trying to tell you is, to save space, none of the ICs in this simulator show their power or earth connections. Check the rest of the amplifiers, logic and gates out, you will see that it is true.

Robert_Kidd

5 years ago

Absolutely right with the exception of the 555, which does show ground and Vcc.

BillyT

5 years ago

Ah, right, there has always got to be an exception...

Robert_Kidd

5 years ago

So true ...

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