IMHO, since I deal mostly with audio;
OPA548T; TO-220, ultra simple and quality 30W audio amplifier, also used a lot in ULN power supplies.
OPA547; TO-220, 500mA amp. Nice simple all in one headphone amp, 500mW output, works great with two 9V batteries..
Price 3 USD per chip.
Regards
http://www.ti.com/lit/ds/symlink/opa548.pdf
http://www.ti.com/lit/ds/symlink/opa547.pdf
OPA548T; TO-220, ultra simple and quality 30W audio amplifier, also used a lot in ULN power supplies.
OPA547; TO-220, 500mA amp. Nice simple all in one headphone amp, 500mW output, works great with two 9V batteries..
Price 3 USD per chip.
Regards
http://www.ti.com/lit/ds/symlink/opa548.pdf
http://www.ti.com/lit/ds/symlink/opa547.pdf
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