Hi, I'm new here so please let me know if this is in the wrong place to post this or if I should be doing anything differently. (also, hi!)
So I'm building a modular synth system using the Frequency Central Power Supply. I've recently built this VCO on a breadboard, and it functions perfectly:
https://www.allaboutcircuits.com/projects/diy-synth-series-vco/
I've then built it on proto board and here's the weird part. It doesn't work when the power is on, but when I switch the power supply off, it works while the power supply is powering down. I've hooked up a multimeter and it looks like it starts functions as the voltage drops to below 11.5v or something, but it's difficult to tell exactly. The circuit uses 3 x LM358s, which should work just fine at 12v, and the only modifications I made the circuit in the link is removing the exponential converter.
The power supply functions great and is putting out +12v, -12v and ground, I've run the bread board version of the circuit with the exact same power source, I've checked that the proto board is exactly the same as the breadboard, and that there are no shorts, and swapped out the ICs just in case)
This is pretty confusing for me, so please let me know if you need any more information to help, I really appreciate it!
So I'm building a modular synth system using the Frequency Central Power Supply. I've recently built this VCO on a breadboard, and it functions perfectly:
https://www.allaboutcircuits.com/projects/diy-synth-series-vco/
I've then built it on proto board and here's the weird part. It doesn't work when the power is on, but when I switch the power supply off, it works while the power supply is powering down. I've hooked up a multimeter and it looks like it starts functions as the voltage drops to below 11.5v or something, but it's difficult to tell exactly. The circuit uses 3 x LM358s, which should work just fine at 12v, and the only modifications I made the circuit in the link is removing the exponential converter.
The power supply functions great and is putting out +12v, -12v and ground, I've run the bread board version of the circuit with the exact same power source, I've checked that the proto board is exactly the same as the breadboard, and that there are no shorts, and swapped out the ICs just in case)
This is pretty confusing for me, so please let me know if you need any more information to help, I really appreciate it!