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Just a quick question about the ELA m251 power supply.
There appears to be several variations of the power supply around, one of which uses a BJT, i would imagine as a current source.
DO you think the NPN transistor takes some strain off the transformer when large current spikes are needed for the charge phase of the first reservoir capacitor?
I also find it surprising that the B+ is only half wave rectified. I wonder why they chose this method.
Any thoughts on these power supply details?
Most other designs seem to just use pi RCRC filters and full wave rectification.
I only ask as i am building a 251 type mic and power supply and i'm trying to understand all the different options available and how they might affect the sound of the mic.
Thanks in advance for any thoughts.