UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Craig Sawyers · 12th Jan 2021, 6:55 pm

Well, the maximum power dissipation of the output transistors (2SB33) is 150mW, and the maximum collector current is 50mA. Which is exceptionally feeble, even for a germanium device...It is no wonder you are seeing distortion.

The good old Mullard OC81 was 600mW and 200mA (with a heat dissipator clipped on that is!).

12th Jan 2021, 6:55 pm	#4
Craig Sawyers Dekatron Join Date: Nov 2010 Location: Oxford, UK. Posts: 4,993	Re: Crossover distortion? Well, the maximum power dissipation of the output transistors (2SB33) is 150mW, and the maximum collector current is 50mA. Which is exceptionally feeble, even for a germanium device...It is no wonder you are seeing distortion. The good old Mullard OC81 was 600mW and 200mA (with a heat dissipator clipped on that is!).