Avon
pfm Member
If I may, I’d like to ask a few questions about the following “functional” diagram of the Peter Baxandall MC head amp. It comes from the following website https://fromvinyltoplastic.com/thor...228s-and-lentek-head-amp-upgrade-and-rebuild/.
First, a lot of the circuit is dedicated to filtering noise from the battery. However, the battery doesn’t reference earth, so to where is that extracted noise supposed to flow? The capacitors to the right do have a central earth connection I suppose.
The input transistor implementation looks nice, as it requires no biasing. What is the name of this arrangement though? It has no feedback, so what sets its gain?
First, a lot of the circuit is dedicated to filtering noise from the battery. However, the battery doesn’t reference earth, so to where is that extracted noise supposed to flow? The capacitors to the right do have a central earth connection I suppose.
The input transistor implementation looks nice, as it requires no biasing. What is the name of this arrangement though? It has no feedback, so what sets its gain?