Hello franblanc,
This is an old thread, but I came across it recently while updating my Forum-Vibe FV-5 docs, did you ever get this resolved?
If not, I have a few insights as to your power problem, but first I must ask if the vibe in the picture you attached is the one you are working with?, if the pic is the one you are working with you should know that is not a Forum-Vibe PCB, just sayin'.
Anyway, regarding the power issue, any normal/average Uni-Vibe circuit's power requirement depends on a few things in your build, like what Lamp/Bulb you are using in your LFO/Bulb-Driver circuit. Most of the small Lamp/Bulb types are averaging from 40mA to 60mA operating current, and although we don't operate our Lamp/Bulb at full power in the vibe's that is still a fairly big chunk of a 100mA power supply.
If we were speaking of the audio section (w/o LFO and Lamp) of a vibe it can work quite fine on a 100mA power source and have some headroom, but when you add on your particular Lamp/Bulb to you power requirement things start to add up, for instance if your build has included an LED (or two) for indicators, then you will have added another 16mA-30mA to your 40mA-60mA that your Lamp/Bulb can require so now we're looking at 50mA-90mA level power requirement and we haven't added in the audio part of the circuit yet, but when we do add it all up we quite likely have exceeded the comfort-zone of the LT1054.
Anyway, I saw that no one replied on this so I wanted to give you some food-for-thought if you were still struggling, hope you got your build going since you posted this so long ago.
This is an old thread, but I came across it recently while updating my Forum-Vibe FV-5 docs, did you ever get this resolved?
If not, I have a few insights as to your power problem, but first I must ask if the vibe in the picture you attached is the one you are working with?, if the pic is the one you are working with you should know that is not a Forum-Vibe PCB, just sayin'.
Anyway, regarding the power issue, any normal/average Uni-Vibe circuit's power requirement depends on a few things in your build, like what Lamp/Bulb you are using in your LFO/Bulb-Driver circuit. Most of the small Lamp/Bulb types are averaging from 40mA to 60mA operating current, and although we don't operate our Lamp/Bulb at full power in the vibe's that is still a fairly big chunk of a 100mA power supply.
If we were speaking of the audio section (w/o LFO and Lamp) of a vibe it can work quite fine on a 100mA power source and have some headroom, but when you add on your particular Lamp/Bulb to you power requirement things start to add up, for instance if your build has included an LED (or two) for indicators, then you will have added another 16mA-30mA to your 40mA-60mA that your Lamp/Bulb can require so now we're looking at 50mA-90mA level power requirement and we haven't added in the audio part of the circuit yet, but when we do add it all up we quite likely have exceeded the comfort-zone of the LT1054.
Anyway, I saw that no one replied on this so I wanted to give you some food-for-thought if you were still struggling, hope you got your build going since you posted this so long ago.