Hi JB, Brent and Les,
I have had the comparator Cap dump circuit working just fine since last fall. Jack & Jeremy studied it extensively in their learning process, and we used it with a fig 33 self oscillator running from the Copper Ma Crystal battery's, to charge motorcycle battery's.......
I did not have a 741 opamp to use, so I used a low power JSC7031 opamp I had on hand. I have worked with a LOT of opamp circuits in the past, so I did make a cupple of miner changes to adapt it. I swapped the + and - inputs of the op amp in the circuit to get it to trigger in reverse, and made the connection to the opto LED a Pull up active, vs the pull down active that JB showed, because I had one of my cap pulser PCB's already wired to work that way.
I have a new version now running using a micro power comparator MAX931, that I will use to trigger a cap pulse charger and Back popper combo built on a cap pulser PCB, that will be for the mini window motor kit from the 2011 conference. I am having a long shaft collar made for the inside of the rotor, which I will epoxy into 1/2 of the rotor assembly then have a set screw to the shaft, so that the rotor cant turn on the shaft. and then reassemble the rotor and sides. Then I will wind 3 coils onto the assembly in the regular 3 phase pattern as shown on JB's Lab notes...... once this is built and running I will be testing various Loads on it, and make a video to post.......
I have had the comparator Cap dump circuit working just fine since last fall. Jack & Jeremy studied it extensively in their learning process, and we used it with a fig 33 self oscillator running from the Copper Ma Crystal battery's, to charge motorcycle battery's.......
I did not have a 741 opamp to use, so I used a low power JSC7031 opamp I had on hand. I have worked with a LOT of opamp circuits in the past, so I did make a cupple of miner changes to adapt it. I swapped the + and - inputs of the op amp in the circuit to get it to trigger in reverse, and made the connection to the opto LED a Pull up active, vs the pull down active that JB showed, because I had one of my cap pulser PCB's already wired to work that way.
I have a new version now running using a micro power comparator MAX931, that I will use to trigger a cap pulse charger and Back popper combo built on a cap pulser PCB, that will be for the mini window motor kit from the 2011 conference. I am having a long shaft collar made for the inside of the rotor, which I will epoxy into 1/2 of the rotor assembly then have a set screw to the shaft, so that the rotor cant turn on the shaft. and then reassemble the rotor and sides. Then I will wind 3 coils onto the assembly in the regular 3 phase pattern as shown on JB's Lab notes...... once this is built and running I will be testing various Loads on it, and make a video to post.......
Comment