Hi...Please take a look at image
I think q3 will not switch if R3 is 100 ohms because current through R2 is about 4.3mA and if R3 is 100 then current through R3 is 7mA so there is current entering the base of Q3...Correct??
I made the circuit..same input signal, same R1...Vcc is 12v...R2 is 4.7k....and load is an LED in series with 3k...I used 20 ohms as R3 and I was not expecting the load (LED) to turn on but it does
What is wrong??
Thanks
I think q3 will not switch if R3 is 100 ohms because current through R2 is about 4.3mA and if R3 is 100 then current through R3 is 7mA so there is current entering the base of Q3...Correct??
I made the circuit..same input signal, same R1...Vcc is 12v...R2 is 4.7k....and load is an LED in series with 3k...I used 20 ohms as R3 and I was not expecting the load (LED) to turn on but it does
What is wrong??
Thanks
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