• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Ancient operational amplifier

Status
Not open for further replies.

Boncuk

New Member
Hi,

there is an article in ELEKTOR magazine about operational amplifiers using vacuum valves.

Here is the picture of the first reliably working OpAmp, made by Philbrick Researches 1952.

Impressive, isn't it?

Boncuk
 

Attachments

Last edited:

Hero999

Banned
I believe I've seen that picture before, I can't remember where though.
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top