small signal to 5v

149

02:20:45

small signal I.e. guitar  amplified to 5v (10vp2p) i get that i can vary the gain with the resistors at the inverting input but not so sure on how to create a level indicator so that an led comes on when the signal is between 4.5v to 5.5v, any thing above or below and led is unlit, any help appreciated.

published 8 years ago

Thrashard96

8 years ago

Isn't 1.7 Vpeak enough even for pro audio at +4dBu?

Thrashard96

8 years ago

Talking about line level. For speaker output you'd really have to use a power amp, there aren't really many exceptions for that.

Dormodular

8 years ago

10v p2p in eurorack modular system

2ctiby

8 years ago

Are you looking for something like this... if so, then you would need to replace the bottom centre source with your rectified output ... http://everycircuit.com/circuit/5194172633186304

x35m95

8 years ago

http://everycircuit.com/circuit/5814755276357632 Maybe this will help? The top voltage dividers are your high and low threshold. I tried to make it with the least amount of specialized components, and if you plan on using a speaker with it, i would use a more specialized amp for that like was suggested before. You could get away with using a quad op amp for all the signal stuff I would say.

Dormodular

8 years ago

yeah it wont be driving a speaker it will litterally be going into other audio stuff that operates at 10v p2p. i cant seem to view both the circuits posted???

x35m95

8 years ago

Try posting the link into your browser and yea, get something meant for audio when it comes to one of those amps, the ones to turn the led on could be dual or quad op amps depending on what you choose to do

Dormodular

8 years ago

ahh yeah sorry was missing a number off the end of the link. yeah x35m95 thats what i was looking for for opamps i was think of using a TL074.

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