Ladies and gents,
Please let me preface this by stating that I have a novice to average electronics knowledge-base. Now, I am building a Minimoog analog synth from scratch and have slowly but surely hit every roadblock known to man when it comes it troubleshooting (it's probably good for me). So right now, I am working on the MIDI2CV interface with its own dedicated +/- 15v PS and it is based on a standard 78xx/79xx circuit. Now, the issue is that at zero load (yes it has a few LEDs that act as a load) the PS shows a nice +/-15v respective to their individual rails. However with the MIDI2CV unit connected, I get +16v on the positive rail and -2.4v on the negative rail. I am using a 36vct 0.7A transformer with the dual secondaries wired in series. That gives me +22.5v and -22.5v pre-filter cap. Mind you, the MIDI2CV board has never been powered and everything was brand new before powering up the board. Also, the orientation of all the components is correct as I triple checked. WHAT DO I NEED TO DO TO MAKE THIS WORK?!!??!!?!? All kidding aside, please help.
The MIDI2CV interface is shown here: https://midisizer.com/midi2cv-mk2/
With gratitude,
Adam
Please let me preface this by stating that I have a novice to average electronics knowledge-base. Now, I am building a Minimoog analog synth from scratch and have slowly but surely hit every roadblock known to man when it comes it troubleshooting (it's probably good for me). So right now, I am working on the MIDI2CV interface with its own dedicated +/- 15v PS and it is based on a standard 78xx/79xx circuit. Now, the issue is that at zero load (yes it has a few LEDs that act as a load) the PS shows a nice +/-15v respective to their individual rails. However with the MIDI2CV unit connected, I get +16v on the positive rail and -2.4v on the negative rail. I am using a 36vct 0.7A transformer with the dual secondaries wired in series. That gives me +22.5v and -22.5v pre-filter cap. Mind you, the MIDI2CV board has never been powered and everything was brand new before powering up the board. Also, the orientation of all the components is correct as I triple checked. WHAT DO I NEED TO DO TO MAKE THIS WORK?!!??!!?!? All kidding aside, please help.
The MIDI2CV interface is shown here: https://midisizer.com/midi2cv-mk2/
With gratitude,
Adam