I am experimenting with IPS and VAS circuits, using a function generator and o-scope.
my question is, using a very simple LTP IPS feeding a single transistor VAS, with the feed back loop being the same as it would be in a full amp, except for takeoff point being at the VAS collector, what is the minimum circuitry I can get away with to feed the function generator signal to the IPS.
I was thinking a large coupling cap, followed by a 1 meg resistor to ground for reference purposes, and then straight into the IPS. Other than maybe some sort of RF shunting cap, would this be fine? I just want bare bones so I can concentrate on the VAS and IPS. Obviously a more developed input circuit would be used in a working amp.
Any problem here? I assume I can't get by with less than that.
my question is, using a very simple LTP IPS feeding a single transistor VAS, with the feed back loop being the same as it would be in a full amp, except for takeoff point being at the VAS collector, what is the minimum circuitry I can get away with to feed the function generator signal to the IPS.
I was thinking a large coupling cap, followed by a 1 meg resistor to ground for reference purposes, and then straight into the IPS. Other than maybe some sort of RF shunting cap, would this be fine? I just want bare bones so I can concentrate on the VAS and IPS. Obviously a more developed input circuit would be used in a working amp.
Any problem here? I assume I can't get by with less than that.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.