I bought 2SA222SG and 2SC6144 transistors (fT=230Mz, hFE300) for PSU pre-regulation along with *V zener blah...
After watching JohnAudioTech video building an unbiased class-B amp I thought the above might be candidates driven by an NJM4580 op-amp. I plan to build an amp to drive 10 watt - 6 ohms speakers.
What concerns me are the huge gain of 4580's 50mA x transistor's hFE 300mA and the Ic capacity of 10A!
If I have provided enough information could someone inform if I'm on track to destroy the transistors, or safe to give it a try. For sure negative feedback could prove a challenge - I'll live with that.
Best wishes to all and a Happy New Year!
After watching JohnAudioTech video building an unbiased class-B amp I thought the above might be candidates driven by an NJM4580 op-amp. I plan to build an amp to drive 10 watt - 6 ohms speakers.
What concerns me are the huge gain of 4580's 50mA x transistor's hFE 300mA and the Ic capacity of 10A!
If I have provided enough information could someone inform if I'm on track to destroy the transistors, or safe to give it a try. For sure negative feedback could prove a challenge - I'll live with that.
Best wishes to all and a Happy New Year!
