Hi,
I need to add a regulator in a power supply to protect the tube of the mic
I attached the schematic and would like to know if what I want to do is ok
I thought about removing R8 and put a 7805 (LM740) instead with a trimmer of 100 ohm
as I need to get 4V under load.
On the right of the schematic there's the value of the components
I find 20V at R7 without microphone connected
In the present state of the psu (unmodified) I get 4,1V under load (mic connected) but I really need to go down to 4V
and most of all to have some regulation!
Thanks a lot for your help!!
I need to add a regulator in a power supply to protect the tube of the mic
I attached the schematic and would like to know if what I want to do is ok
I thought about removing R8 and put a 7805 (LM740) instead with a trimmer of 100 ohm
as I need to get 4V under load.
On the right of the schematic there's the value of the components
I find 20V at R7 without microphone connected
In the present state of the psu (unmodified) I get 4,1V under load (mic connected) but I really need to go down to 4V
and most of all to have some regulation!
Thanks a lot for your help!!