1. Find two sources of AC current that have different frequencies. Alternator/variac is one way.
2. Your carrier frequency will be rectified at 120hz.
3. Your modulation will be not be rectified at 180hz.
4. You will build a choke that consists of either a bifilar wrap or two separate chokes about a core with one of them variable, if you use a bifilar you must ensure that the choke is resonant at exactly 180hz, if separate then make them resonant at 180hz but include a wiper arm for fine tuning to exactly 180hz. The separate chokes will be wound both clockwise and appear identical when not on the core. The input for the positive choke from the secondary(alternator/variac) is at the start of the choke winding and the end of the winding goes to the inner tubes of the cell, the negative choke has the start of its winding connected to the outer tubes of the cell and the finish of its winding going to the secondary. This is called additive so that when both chokes have current running through them the magnetic field will flow in the same direction. When this happens the choke will block any modulation current at 180hz and any carrier current associated with it.
5. Do not try and make your chokes resonant with the cell, it has absolutely nothing to do with it, a tank circuit is the last think you need because it will cause your chokes to try and induce current into the cell. We need as much as a 'no load' scenario as we can find.
The cells tubes are in parallel not series.
6. Diode, you do not need a fast switching diode for this design but one that will take 10a current and 600v. The diode will be placed between the alternator/variac output and your positive choke and the magnetic field of the choke will protect the diode from adverse voltage. The other thing that protects the diode from adverse voltage is the gate which I will explain later.
7. Impedance. Do not worry about the impedance of the variac being different to that of the alternator, the AM signal they create has a natural impedance which you cannot change, do not worry about impedance of the cell either, it has nothing to do with it, trust me.
8. The gate will be placed between the alternator/variac output and the choke. You will design a gate that can take both the current from the alternator and variac and be able to handle the AM waveform unhindered, this will mean a pulse on-pulse off design and not a square wave that will destroy the AM signal. Therefore a burst function is needed where a control circuit can turn a relay on and off which is better than an SCR. You will control the bursts at the same frequency as the modulation but must be able to vary phase so that you can cut a modulation in two at the peek voltage amplitude and shut down the trailing 50% of the modulation to zero volts. This must be variable so you can control gas production. This gate also controls the ability of the water fuel cell to throw voltage back in the direction of the diode. Because capacitors work in tank circuits on full frequency response and your modulation has been cut off at peek voltage of the modulation, the capacitor is waiting for the other half of the modulation but it ain't coming and there is a pause in the system, your next positive modulation is timed with the gate so that you don't go past that pause time (rear half of modulation) but hit the capacitor again before it responds. This protects your diode from reverse voltage and if you time it perfectly, an 100v diode will suffice. Trust me.
9. Other designs. Providing the carrier is lower frequency than the modulation and you gate it properly and you set the choke resonance to exactly that of the modulation frequency then you can work with higher frequencies but always remember the gate system is better with a relay because it keeps the AM signal intact.
10. Resonance. What everyone thinks resonance in these systems is, then think again and I can prove it. There is no resonance between the cell and the chokes, there is no resonance between the primaries, secondaries or any other factor what so ever. There is only the resonant ability of the chokes to block current at the modulation frequency. If the cell is resonant with the chokes then you'll screw the whole system up and fry the diode because there will be no reverse voltage protection from the cell which is set by the gate. The chokes are bullying the 5hit out of the cell and again, I can prove it. Trust me.
2. Your carrier frequency will be rectified at 120hz.
3. Your modulation will be not be rectified at 180hz.
4. You will build a choke that consists of either a bifilar wrap or two separate chokes about a core with one of them variable, if you use a bifilar you must ensure that the choke is resonant at exactly 180hz, if separate then make them resonant at 180hz but include a wiper arm for fine tuning to exactly 180hz. The separate chokes will be wound both clockwise and appear identical when not on the core. The input for the positive choke from the secondary(alternator/variac) is at the start of the choke winding and the end of the winding goes to the inner tubes of the cell, the negative choke has the start of its winding connected to the outer tubes of the cell and the finish of its winding going to the secondary. This is called additive so that when both chokes have current running through them the magnetic field will flow in the same direction. When this happens the choke will block any modulation current at 180hz and any carrier current associated with it.
5. Do not try and make your chokes resonant with the cell, it has absolutely nothing to do with it, a tank circuit is the last think you need because it will cause your chokes to try and induce current into the cell. We need as much as a 'no load' scenario as we can find.
The cells tubes are in parallel not series.
6. Diode, you do not need a fast switching diode for this design but one that will take 10a current and 600v. The diode will be placed between the alternator/variac output and your positive choke and the magnetic field of the choke will protect the diode from adverse voltage. The other thing that protects the diode from adverse voltage is the gate which I will explain later.
7. Impedance. Do not worry about the impedance of the variac being different to that of the alternator, the AM signal they create has a natural impedance which you cannot change, do not worry about impedance of the cell either, it has nothing to do with it, trust me.
8. The gate will be placed between the alternator/variac output and the choke. You will design a gate that can take both the current from the alternator and variac and be able to handle the AM waveform unhindered, this will mean a pulse on-pulse off design and not a square wave that will destroy the AM signal. Therefore a burst function is needed where a control circuit can turn a relay on and off which is better than an SCR. You will control the bursts at the same frequency as the modulation but must be able to vary phase so that you can cut a modulation in two at the peek voltage amplitude and shut down the trailing 50% of the modulation to zero volts. This must be variable so you can control gas production. This gate also controls the ability of the water fuel cell to throw voltage back in the direction of the diode. Because capacitors work in tank circuits on full frequency response and your modulation has been cut off at peek voltage of the modulation, the capacitor is waiting for the other half of the modulation but it ain't coming and there is a pause in the system, your next positive modulation is timed with the gate so that you don't go past that pause time (rear half of modulation) but hit the capacitor again before it responds. This protects your diode from reverse voltage and if you time it perfectly, an 100v diode will suffice. Trust me.
9. Other designs. Providing the carrier is lower frequency than the modulation and you gate it properly and you set the choke resonance to exactly that of the modulation frequency then you can work with higher frequencies but always remember the gate system is better with a relay because it keeps the AM signal intact.
10. Resonance. What everyone thinks resonance in these systems is, then think again and I can prove it. There is no resonance between the cell and the chokes, there is no resonance between the primaries, secondaries or any other factor what so ever. There is only the resonant ability of the chokes to block current at the modulation frequency. If the cell is resonant with the chokes then you'll screw the whole system up and fry the diode because there will be no reverse voltage protection from the cell which is set by the gate. The chokes are bullying the 5hit out of the cell and again, I can prove it. Trust me.