AG, Bertus and Halrald, and anyone else....
I need to really drill down to see if my distortion pedal woes are due to using faulty op amps. Thus, I need to go back to basic breadboarding, so that I don't drive myself and others nuts.
Can you tell me if this will work:
I have two variable power supplies (bear this in mind)
I don't want to build a voltage divider circuit just yet. So, I was thinking of using one of the variable power supplies to supply 1/2 the voltage (ie: 4.5 volts) at pin 3. That would eleimnaiunte the need to build a voltage divider for now. The only reason I want to skip building it, is because I want the emphasis to be on finding out if the op amp is faulty, and not having to build the voltage divider, eliminates an error I could make at that step (although, I'm confident I could build it, I really don't want to breadboard it, as breadboards introduce noise etc- so I though, why not just provide the 4.5 volyts through my second supply)
Then I will use the other power supply to feed the circuit its 9volts that the battery ordinarily would have.
My goal is to simply get the op amp driving the sound (although I know it will be loud), just to see if it is the IC chip that is faulty or not.
I suppose AG, I should place a 220K resistor between Pins the - In and the Out of the op amp? I am going to use a single op amp, to eliminate having to buffer the second op amp on a dual.
As mentioned, I want to really focus on getting the sound out of the op amp. If the op amp is faulty, I can be chasing my tail. So best I think to breadboard and see.
Thoughts?
I need to really drill down to see if my distortion pedal woes are due to using faulty op amps. Thus, I need to go back to basic breadboarding, so that I don't drive myself and others nuts.
Can you tell me if this will work:
I have two variable power supplies (bear this in mind)
I don't want to build a voltage divider circuit just yet. So, I was thinking of using one of the variable power supplies to supply 1/2 the voltage (ie: 4.5 volts) at pin 3. That would eleimnaiunte the need to build a voltage divider for now. The only reason I want to skip building it, is because I want the emphasis to be on finding out if the op amp is faulty, and not having to build the voltage divider, eliminates an error I could make at that step (although, I'm confident I could build it, I really don't want to breadboard it, as breadboards introduce noise etc- so I though, why not just provide the 4.5 volyts through my second supply)
Then I will use the other power supply to feed the circuit its 9volts that the battery ordinarily would have.
My goal is to simply get the op amp driving the sound (although I know it will be loud), just to see if it is the IC chip that is faulty or not.
I suppose AG, I should place a 220K resistor between Pins the - In and the Out of the op amp? I am going to use a single op amp, to eliminate having to buffer the second op amp on a dual.
As mentioned, I want to really focus on getting the sound out of the op amp. If the op amp is faulty, I can be chasing my tail. So best I think to breadboard and see.
Thoughts?