Was looking for something that drives external transistors, and be able to run at more than 40 or 50 volts, from what I gather. That’s not the 1875/2050.
All of them on the market these days are fake, though. Gotta build your own.
All of them on the market these days are fake, though. Gotta build your own.
Isn’t that what I just said?
At one time they were all the rage. They would have died out eventually, with SMD taking over. Home built STKs (and most fakes) are made out of SMDs. The module is kind of a redundant step for new design now.
At one time they were all the rage. They would have died out eventually, with SMD taking over. Home built STKs (and most fakes) are made out of SMDs. The module is kind of a redundant step for new design now.
They are not really supposed to be used like that. Magic smoke is common for those who try. And does anyone know how positively awful the crossover distortion is on those “designs”? One is far better off driving complementary CFP pairs with a regular, non-power high voltage op amp. At least proper current limiting can be added and they can be biased into AB.
In LTC6090 datasheet is an Simple 100 Watt Amplifier.
https://www.analog.com/media/en/technical-documentation/data-sheets/6090fe.pdf
It uses lateral MOSFETs.
https://www.analog.com/media/en/technical-documentation/data-sheets/6090fe.pdf
It uses lateral MOSFETs.
Attachments
I looked at Opamp controlled amplifiers lately. Here you can find some good info.
100W opamp based amp
100W opamp based amp
Reduces the TC of the resistor. A higher power resistor could have done the same thing, probably at added cost. Feedback resistor TC is a recognised source of distortion.
You're saying that you're running a 741 opamp at ±30 V. Is this correct?
Best regards!
With a very small peak to peak output voltage, one might get away with it. If a device can survive as a comparator over the full common mode range on a single 30V supply you could put 60 on it with the output perfectly centered. Go off center by much, and boom. Not much different than fake 2SC5200’s with 2N3055 inside. Runs fine at quiescent and with a few hundred mW of music. Turn up the volume, and bang.
Here is a NE5534 who drives TIP41/42.
Low distortion, THD 0.00009%
Low distortion, THD 0.00009%
That is not many parts 🙂
Haven't you seen some designs on this forum? They are crowded!
Haven't you seen some designs on this forum? They are crowded!