Is this diagram correct, did I understand it right?
In default position the slave connections are the same as master connections:
When SK1 is pressed, PSU goes to series mode:
It makes a voltage divider between master's positive and slave's ground and connects it to non-inverting pin of error amplifier and puts two supplies in series by connecting master's ground to slave's positive.
When SK1 and SK2 is pressed it goes to parallel mode:
Master's positive and negative connects to slave's positive and negative, Now the voltage divider is between positive and negative, Master and slave transistors bases are now connected together, CC amplifier non-inverting input is connected to positive.
- What is the job of voltage divider in series and parallel?
- Why in parallel mode CC amplifier non-inverting input is connected to positive?
Also I found two errors in the schematic, master's base current is not connected to the transistors base:
And Slave's voltage adjustment pot middle pin shouldn't be connected directly to the 2.5V voltage reference: