As many of you know, I successfully built an overdrive pedal using the 4558D double op amp IC, with the help of the kind folks here.
My journey can be found on this thread: https://www.electronicspoint.com/forums/threads/back-to-the-breadboard.295296/
The schematics I used can be found here:
https://www.electronicspoint.com/forums/threads/back-to-the-breadboard.295296/page-4
and here:
https://www.wamplerpedals.com/blog/...ow-to-design-a-basic-overdrive-pedal-circuit/
So, I thought, since I built this successfully with a dual op amp, why not try it with a single op amp.
I have a ton of the TL081CP op amps, which are single op amps. Datasheet here:
https://www.ti.com/lit/ds/symlink/tl082h.pdf?ts=1627155765274&ref_url=https%3A%2F%2Fwww.google.com%2F
So, I build the entire circuit, and the last part was to insert the op amp into the socket. I did so, but because my eyesight sucks, I accidentally put it in upside down. I only mention this because I am not sure if it caused the problem I am about to describe.
I took the op amp out of the socket and threw it out. I inserted a new one, this time, correctly.
However, I am getting the following Pin readings- and yes, I did remap the pins according to the pin mappings for a TL081CP op amps:
These readings are in Volts:
Pin1. 7.6
Pin2. 4.0 and counting down
Pin3. 4.5
Pin4. 0
Pin5. 1.1
Pin6. 4.4
Pin7. 9.02
Pin8. 8.17
I don't think these readings make sense. Could I have fried some components when I inserted the op amp into the socket the wrong way?
Thank-you
UPDATE: Forget it for now. I think I may have screwed up my wiring. I will update o once I sort this out.
My journey can be found on this thread: https://www.electronicspoint.com/forums/threads/back-to-the-breadboard.295296/
The schematics I used can be found here:
https://www.electronicspoint.com/forums/threads/back-to-the-breadboard.295296/page-4
and here:
https://www.wamplerpedals.com/blog/...ow-to-design-a-basic-overdrive-pedal-circuit/
So, I thought, since I built this successfully with a dual op amp, why not try it with a single op amp.
I have a ton of the TL081CP op amps, which are single op amps. Datasheet here:
https://www.ti.com/lit/ds/symlink/tl082h.pdf?ts=1627155765274&ref_url=https%3A%2F%2Fwww.google.com%2F
So, I build the entire circuit, and the last part was to insert the op amp into the socket. I did so, but because my eyesight sucks, I accidentally put it in upside down. I only mention this because I am not sure if it caused the problem I am about to describe.
I took the op amp out of the socket and threw it out. I inserted a new one, this time, correctly.
However, I am getting the following Pin readings- and yes, I did remap the pins according to the pin mappings for a TL081CP op amps:
These readings are in Volts:
Pin1. 7.6
Pin2. 4.0 and counting down
Pin3. 4.5
Pin4. 0
Pin5. 1.1
Pin6. 4.4
Pin7. 9.02
Pin8. 8.17
I don't think these readings make sense. Could I have fried some components when I inserted the op amp into the socket the wrong way?
Thank-you
UPDATE: Forget it for now. I think I may have screwed up my wiring. I will update o once I sort this out.
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