Evening All, I have a dumb question.
I have a couple of ancient power supplies that I bought years ago. One I have been using for years, I have a new need for the second power supply. I have two power transistors that are open. The parts list list these two transistors as a matched pair.
My question is do they have to be matched pairs and why?
I have inserted a copy of the schematic. The two transistor are located on page 2 Transistors X4 & X5.
Thanks
Happy New Years to all.
I have a couple of ancient power supplies that I bought years ago. One I have been using for years, I have a new need for the second power supply. I have two power transistors that are open. The parts list list these two transistors as a matched pair.
My question is do they have to be matched pairs and why?
I have inserted a copy of the schematic. The two transistor are located on page 2 Transistors X4 & X5.
Thanks
Happy New Years to all.