op-amps info - Electronic Circuits Projects Diagrams Free

Julius · 7th June 2003, 02:21 PM

I'm having problems determining on an schemathic
diagram that deals with op-amps: Which side of the
op-amp is U1A & U1B, and Which pins are the inputs,
Ground & Pos./ Neg voltages.

Sebi · 7th June 2003, 02:29 PM

And where is the sematic?

Dean Huster · 9th June 2003, 01:27 PM

The assignment of "U1A" and "U1B" to a particular half of a dual op amp is at the discretion of the person drawing the schematic diagram. I usually use the lower-numbered input pins for the "A" section and the higher numbered input pins for the "B" section myself, but that's me. Harvey Lithehquiate may do it just the opposite and that's OK.

To identify the pins of the op amps, you need to get a data book. I suggest the linear data books from National Semiconductor. They can be purchased through Digi-Key or if you get on the right mailing lists, they can be had for free directly from National. Or you can use one of the many on-line IC sources for diagrams and specifications.

Dean

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7th June 2003, 02:21 PM	(permalink)
Julius	op-amps info I'm having problems determining on an schemathic diagram that deals with op-amps: Which side of the op-amp is U1A & U1B, and Which pins are the inputs, Ground & Pos./ Neg voltages. __________________ I\'m a Electronic Tech: For radio ,cctv, Digital music equipment & Tranceivers

7th June 2003, 02:29 PM	(permalink)
Sebi	And where is the sematic?

9th June 2003, 01:27 PM	(permalink)
Dean Huster	Halves. The assignment of "U1A" and "U1B" to a particular half of a dual op amp is at the discretion of the person drawing the schematic diagram. I usually use the lower-numbered input pins for the "A" section and the higher numbered input pins for the "B" section myself, but that's me. Harvey Lithehquiate may do it just the opposite and that's OK. To identify the pins of the op amps, you need to get a data book. I suggest the linear data books from National Semiconductor. They can be purchased through Digi-Key or if you get on the right mailing lists, they can be had for free directly from National. Or you can use one of the many on-line IC sources for diagrams and specifications. Dean __________________ Dean Huster, Electronics Curmudgeon Contributing Editor emeritus, "Q & A", of the former "Poptronics" magazine (formerly "Popular Electronics" and "Electronics Now" magazines). R.I.P.