If there have been no mistakes the circuit is correct.
I have only a basic grasp of electronics, I've not studied it for years, and I'm seeking a basic understanding of how feedback works in this vintage circuit.
My focus is 15VT2 and 3 and 5VT1.
Ideally, quiescent currents and bias voltages ought to remain static. In a dynamic situation, set bias voltages/currents ought to remain static.What steps have been taken in this circuit to try to maintain steady bias voltages?
Then we have the issue if reducing distortion. What steps if any have been taken in this circuit around the devices mentioned to reduce distortion of the signal by way of negative feedback?
15VT2 can take a signal (from a circuit that produced an alarm sound). But, can 15VT2 been seen solely as a feedback element in it's own right? (Is it the case that 15VT2 can take an input - just a nice bonus?)
I hope my questions make sense.
I don't think 15VT2 really amplifies.
Thanks.
[IMGDEAD]http://homepage.ntlworld.com/richards_internet/TEMPORARY/circuit.html[/IMGDEAD]
I have only a basic grasp of electronics, I've not studied it for years, and I'm seeking a basic understanding of how feedback works in this vintage circuit.
My focus is 15VT2 and 3 and 5VT1.
Ideally, quiescent currents and bias voltages ought to remain static. In a dynamic situation, set bias voltages/currents ought to remain static.What steps have been taken in this circuit to try to maintain steady bias voltages?
Then we have the issue if reducing distortion. What steps if any have been taken in this circuit around the devices mentioned to reduce distortion of the signal by way of negative feedback?
15VT2 can take a signal (from a circuit that produced an alarm sound). But, can 15VT2 been seen solely as a feedback element in it's own right? (Is it the case that 15VT2 can take an input - just a nice bonus?)
I hope my questions make sense.
I don't think 15VT2 really amplifies.
Thanks.
[IMGDEAD]http://homepage.ntlworld.com/richards_internet/TEMPORARY/circuit.html[/IMGDEAD]
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