When the base is capacitor-coupled and is biased at about +0.65V by a resistor or two then the transistor is turned on half-way and can amplify a low level signal.
The coil will short the base of the second transistor to ground. You need a coupling capacitor so that the base can be at about +0.65VDC.Why capacitor coupled? Can I simply have a voltage divided that sets my base voltage ( of 2nd npn) at about +0.7V ?
Iimagine,
Are you left-handed or something? Most of us read words and schematics from left to right so our input is on the left side and the output is on the right side.
Yours is backwards.
Oh, are you in Down Under??:wink:
Maybe the pins on the transistors are connected backwards?Breaking news: Circuit in post #10 and #26 does not work on breadboard
Maybe the pins on the transistors are connected backwards?
Is the output stuck at almost 0V or at +5V?Pins are connected properly
I simulated the circuit and it works fine.Its a straight line at 600mV
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