hi everybody,
here are some historical background about electronics:
1. the term "operational amplifier" appeared on a paper wrote by Ragazzini way back in 1947!!!!
2. the familiar triangular symbol for circuit operation was introduced way back in 1952 by GeorgeA. Philbrook Researches Inc.
3. believe it or not - the price of an op-amp like P2 way way back was $227.00
4. the concept of "negative feedback" was invented by Harold S. Black who was then working with Bell Laboratories in 1927
5. the famous Wein bridge network oscillator was conceive by Max Wein in 1891.
6. the man Lee DeForest created the the triode valve way back in 1906.
next time around i will chat about who made the first computer. the americans or the japanese.
here are some historical background about electronics:
1. the term "operational amplifier" appeared on a paper wrote by Ragazzini way back in 1947!!!!
2. the familiar triangular symbol for circuit operation was introduced way back in 1952 by GeorgeA. Philbrook Researches Inc.
3. believe it or not - the price of an op-amp like P2 way way back was $227.00
4. the concept of "negative feedback" was invented by Harold S. Black who was then working with Bell Laboratories in 1927
5. the famous Wein bridge network oscillator was conceive by Max Wein in 1891.
6. the man Lee DeForest created the the triode valve way back in 1906.
next time around i will chat about who made the first computer. the americans or the japanese.