Stanley Meyer Gas Feedback

Control Circuit-GMS Gas Management System


Thee Gas Feed Back circuit was originally part of the VIC Matrix set of boards to control the throttling of gas production and ramping up of gas production in line wwith pedal position and gas pressure.

Hydrogen Hot Rodders Do it again 

A flip-flop relay might work a a easy fit

to have 2 cell side by side maintaining pressuree to the fuel rail. 2 to 6 bar depending on engine.

The dual-pump compressors 

(for run-time leveling) aren't even energized all the time.

When the pressure switch triggers a compressor to run,

it'll run until the pressure switch tells it to cut off.

Just as a 2 bar cell prssure switch transducer would just adjust it .

At the same time it triggers, it sends a pulse to the flip-flop

relay so the next time, the other compressor runs.

so both cell hit pressure  say 2 bar than turn off only one is oppen to fuel rail, once it drop beloww 1 bar the flip activate clse low cell to start producing and open the high prressure cell to release its gas to rail. this is better than having a buffer tank on the rail.

The flip-flop relays have a vertical spring and a sort of detent mechanism,


so a short pulse through the coil on either side will flip it to that side and it'll stay there even when the coils are             de-energized. GOD Seeed Water is Fuel

Also See Pneumatically Piloted Flip-Flop Valve

Pressure Sensor

On Version1 and Version 2

Operating Range 0 to 6 bar is what we need this sensor works but we should select careefully , the more pressure to fuel rail the better if using gas, if using Nano bubble water version than just 1 - 2 atm ok . 

Transducer for Monitoring Water Cell Pressure



•±1% Interchangeability

•Sealed for Harsh Environments

•1 to 6 Vdc Output

•9 to 20 Vdc Power

•-55 to 105°C Operating Range

•Fully Calibrated and Temperature Compensated


SPECIFICATIONSExcitation: 9 to 20 Vdc at 15 mA (polarity protection)

Output: 1 to 6 Vdc

Input Resistance: 2 MΩ at 25 Vdc

PERFORMANCEAccuracy: ±1.0% full scale

Linearity: ±0.5% full scale

Hysteresis: ±0.25% full scale

Zero Balance: ±1% full scaleSpan

Tolerance: 5 ±0.1 Vdc

Operating Temperature Range: -55 to 105°C (-67 to 221°F)

Compensated Temperature Range: 0 to 85°C (32 to 185°F)

Thermal Zero Effect: ±0.02% rdg/°C (±0.01% rdg/°F)

Thermal Sensitivity Effect: ±0.02% rdg/°C (±0.01% rdg/°F)

Proof Pressure: 2x full scale; 1.5x over 200 psi

Burst Pressure: 20x full scale; 10x: 50 to 200 psi; 5x: 500 psi and up

CONSTRUCTIONGages: Piezoresistive on bending beam

Body/Diaphragm Material: 300 Series SS (silver, copper, nickel, cadmium brazed)

Pressure Port: 1/8-27 NPTELECTRICAL CONNECTIONCable Style: 900 mm (36") 3-lead shielded PVC

Pressure Cavity Volume: 0.091 in³Weight: 113 g (4 oz)Frequency Response: 50 Hz

Version 1

Version 1 which we feel was in the GMS box perhaps the Version 1 GMS 

Th Water Fuel Faries Found the Substitue Sheet from the Patent Applications. 

So with your help we have already rebuilt this card t words as described and can be purchsed now from Secure Supplies with Gauge and sender. 

This card out put to gauge , Vic Driver filter board and the Gate Board.


The Gas feedback control circuit. 

1: It has the pressure transducer hooked to it.
2: It maintains a certain low pressure limit.
3: If the pressure gets to a certain high pressure limit

     it turns the cell off.
4: It also has a pressure gauge hooked to it so you can

    see the pressure in the cell.

5: If the pressure gets to a certain high pressure limit it

    turns the cell off.


 I count 6 op-amps, 3 PLLs, 2 one-shots and 2 quad nor gates.

 electrostatic filter boards also controlled the cell water level and stuff i think. Seemed like there were quite a few more parts on the board than in the schematic. 


Maybe Stan had it built for dual control or something, multiple chambers if needed.

 Seemed like there were quite a few more parts on the board than in the schematic.  Maybe Stan had it built for dual control or something, multiple chambers if needed.


I have this photos also. It is electrostatic filter boards - according to name of photos I have.


I dont remember  where I got this photos and dont know who give this name.that also controlled the cell water level and stuff

Like Electrostatic Filter

Order Now 

Gas Feed Back Circuit 


Version 2

Version 2 which we feel was in the GMS box was this card, though

we a building it now to check operational Parameters 

It is Possible this card was designed to controls 4 cells or 4 relays handling voltage from ceenter taps or individual vic matix sets.

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