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#5819936
Hello everybody, I´m a total Noob - please be tolerant with me, I go straight to my question: I added a circuit diagram, on the upper right of it there is a choke with 2.5 mH directly behind the power input. But I cannot grasp what kind of Choke that actually represents, all I have is the symbol of an air choke and the value of it. I have no clue what that actually would be for me to order in an electronic shop. I made day-long research on the internet and learned a lot about chokes. However, what kind of choke I could use to finish my project, I did not learn. The circuit I have from a book of the 90´s. It was designed to replace an old 3-stage Tube-Aplifier with at these times more modern parts. There is not much on the Internet when it comes to making an Op-Amp with discrete parts. Of course I could make one with a LM 741, but I have a particular interest in that design, is is a vintage design being the key component of a device presented in the book. I´d be also glad for every comment on the circuit, what it does and what range of frequencies you would expect it should deliver on the output. Thanks for any comments, Lead
Attached files:
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circuit.jpg
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