Technology Validation
A working technology must be measurable.
VENDOR.Max is a non-linear electrodynamic installation operating in a controlled discharge-resonant regime.
Nobody asks how many kilowatts come out of a wall socket with nothing plugged into it. The voltage is there; the flow is not. Whether an energy installation works is decided not at the connector but in its operating state.
Establish the operating point. Check that it holds. Connect an external circuit. Measure the transition to a new operating point.
The unit presented for validation is a prototype rebuilt on a new component base. The previous build demonstrated the engineering viability of the architecture and produced the internal experimental material of the project.
Architecture
The architecture uses physical mechanisms that have been studied experimentally in the published literature: resonant circulation, power transfer between coupled resonant structures, the dependence of a coupled regime on its load, power conversion and buffering.
The literature is collected in Scientific Foundations; how these mechanisms combine into an operating point is set out in The First Open Engineering Question.
VENDOR combines these mechanisms into one controlled system. Validation first examines the behaviour of its working core, then separately examines the complete energy balance at the product boundary.
First, the working core is tested with no user load: does a stable operating point form, and does it persist? Then an external load circuit is connected. The test checks whether the system moves to a new operating point and holds it. The load is then changed in steps to establish that the transitions repeat and that the internal buffer recovers. Finally, at the complete boundary of the enclosure, it is established what the energy balance resolves into.
The working core
Frame 1 is the working core of the installation. It is where the behaviour of the system is measured.
Frame 1 covers blocks 3, 5 and 12 and the power stage of block 13 up to and including the regulated DC output. The main DC bus, the BBMS regime branch and the return path sit outside Frame 1 but inside the product; the internal cycle closes through them. An external load circuit is then connected to the system.
An operating point is the state in which average internal stores do not drift while internal flows match current extraction and own losses. Measured regime parameters, bus voltage and critical temperatures must at the same time remain within the limits set by the protocol.
An operating point is a state in which nothing is left to keep rising and nothing is left to keep falling.
With no user load the installation is not idle. It carries its own regime return, its own auxiliary needs and its losses — it is loaded by its own operation.
Validation does not require rebuilding the device
A schematic and a physical measurement answer different questions.
A schematic describes connectivity. A bill of materials describes components. Neither, by itself, defines the dynamically controlled operating state of VENDOR.Max. That state depends on coordinated switching, coupled resonant behaviour, feedback, sensing, load response and control acting across multiple time scales.
The public architecture describes what the functional stages do. The implementation parameters and control laws required to create those states remain engineering know-how. Their disclosure is not required to verify the physical result.
Rebuilding the device asks how to create the state. Validation asks what the state physically does.
An independent measuring party does not need to know how VENDOR creates its operating state in order to determine whether that state exists and persists at Frame 1, or what crosses the complete boundary of the device while that state exists, at Frame 0.
Test A — no user load
The user port is open.
Measured: the regime state, the main bus voltage, the two-way exchange of the internal battery, the temperatures of critical components and the auxiliary consumption.
Does the system hold a stable operating point?
Yes — if the regime and the bus voltage show no drift, the thermal state is bounded, and the internal battery shows no net depletion over the defined steady-state observation window.
Test B — external load circuit
A defined load is connected to the output — resistive, or a calorimetric heater. A new draw appears, and the system changes.
During the transition the internal buffer bridges the temporary gap between the current state of the system and the new operating point; the test measures the outcome of the transition, not its internal law.
Measured: the depth and duration of the bus voltage dip, the time to reach the new point, the energy released by the internal buffer, and its recovery.
Does the system move to a new operating point and hold it?
The buffer buys the system time for the transition. It does not create a new operating point.
| Observation | How it reads |
|---|---|
| The battery releases energy during the transition | normal buffer behaviour |
| After the transition its charge recovers | the transition succeeded |
| Discharge continues over the steady-state window | no new operating point was reached |
Test C — load changes
The load is changed in steps: up, down, disconnected, reconnected.
The sequence is repeated at intervals, then with a different operator, different instruments and a different site. The same sequence run with the installation switched off rules out signals produced by the measuring chain itself.
Does the system return to stable points and recover its buffer?
How it is measured
Synchronous multichannel electrical measurement at the core ports, the main bus and the output; the state of the internal battery in both directions; the temperatures of critical components.
Active power is the synchronous average of the product of instantaneous voltage and current at one port; the product of separately measured RMS values is not active power. Power quantities are defined by IEEE Std 1459-2025; output interfaces follow ETSI EN 300 132-2, ETSI EN 300 132-1 and IEC 60038.
Calorimetry at the load is a cross-check by a different physical method; the calorimeter is calibrated by electrical substitution before and after the run. Instruments are traceable, and the uncertainty budget is drawn up before the test begins.
Functional result
The result is confirmed if the answer to all three questions is yes, the set limits are not exceeded, and the result is reproduced. Numerical thresholds are fixed by the protocol before measurement begins.
| Outcome | What it means |
|---|---|
| Holds | the operating point is stable with and without load; transitions are reproduced |
| Does not hold under load | there is no new stable state at the stated draw |
| Buffer gradually discharges | the steady regime is carried by a discharging internal battery |
| Not determined | the observation window or the data are insufficient for a conclusion |
Source attribution at Frame 0
The operating-point tests establish how the architecture behaves. What closes the complete energy balance is a separate measurement task, carried out at Frame 0 — the boundary of the product enclosure.
After start-up, the design provides no continuing normal power-input port. This is a statement about topology; it does not mean that the total energy inflow across Frame 0 is zero. The measuring party therefore accounts for the flows across the enclosure and the changes of internal stores, and checks ordinary explanations first because they are the easiest to bound and refute: a missed electrical input, an internal store, a measurement error, or coupling with the surroundings. Channels measured directly are reported as measurements; channels that cannot be measured directly with the available equipment receive justified upper bounds; both enter the uncertainty budget. An unusual attribution is not assumed.
If the lower bound of the delivered energy exceeds the conservative upper bound of all internal stores capable of contributing to the observed output, the internal-store explanation is closed.
| Outcome | What it means |
|---|---|
| Unmeasured ordinary input | a missed electrical, thermal, mechanical or electromagnetic channel is found; attribution is closed |
| Contribution of an internal store | the output is explained by a decrease in stored energy; attribution is closed |
| Measurement or model error | the residual disappears once the metrology is corrected; attribution is closed |
| Physical inflow across the boundary | a measurable flow through Frame 0 is found; the channel receives its own name |
| Reproducible unattributed residual | only after an independent laboratory, an uncertainty budget and replication |
Preliminary estimates of known external channels are made as upper bounds for the specific geometry and test conditions. For the tests carried out so far these estimates lie far below the kilowatt scale. The final conclusion belongs to measurement. If the measurements and bounds available do not close the balance, the report says so and names the open channel.
Independent execution
The test is carried out by an accredited measuring party — with its own traceable instruments, no financial interest in the outcome, at a site of its choosing.
The protocol and the criteria are fixed before the first measurement. Raw data are attached to the report without editing. The report is published in full, whatever the outcome.
Conditions of execution — handover of the installation, accounting for external connections, inspection of internal stores — are set by the protocol.
The test does not require disclosure of the implementation: it measures flows across the enclosure and changes in stores. Regulatory assessment of the product is dealt with separately.
Technology Readiness Levels (TRL 1–9)
Nine steps from an observed principle to a system proven in operation.
The level titles below follow the definitions in the European Commission’s Horizon Europe Work Programme 2026–2027 General Annexes. NASA, which introduced the scale, and ESA, through ISO 16290, also use nine levels, but the practical criteria for assessing a level depend on the methodology applied.
A TRL states how mature a technology is. The validation described on this page establishes by measurement what the installation physically does; the two answer different questions and do not replace each other.
TRL 1 — Basic principles observed
The lowest level of the scale: a physical effect has been observed and reported, and research begins to turn it into applied work. The evidence at this level is typically a published study or a recorded observation of the principle.
TRL 2 — Technology concept formulated
A practical application of the observed principle is proposed, together with the reasoning for why it should work. The concept is supported by analysis or simulation, but no experiment has confirmed it yet.
TRL 3 — Experimental proof of concept
Laboratory experiments and analytical studies show that the critical function of the concept actually works. The components are usually tested separately, so the result confirms the key effect, not the behaviour of a system.
TRL 4 — Technology validated in a lab
The basic components are integrated into a working breadboard and operated together in the laboratory. The test shows that they function as a set under controlled conditions that are still far from the conditions of real use.
TRL 5 — Technology validated in a relevant environment
The integrated components are tested in an environment that reproduces the essential features of real use, such as realistic loads, supply conditions and temperatures. For key enabling technologies the European Commission specifies an industrially relevant environment. The defining condition of this level is validation of the technology in that relevant environment rather than only in the laboratory.
TRL 6 — Technology demonstrated in a relevant environment
A representative model or prototype, close to the intended configuration, is demonstrated in a relevant environment. That demonstration is the defining condition of the level: the subject of the test is now a model or prototype that represents the intended system, not only its validated components. Many deep-tech projects meet the funding gap between research and commercialisation, commonly called the “valley of death”, in the middle of the scale; the term describes a financing problem and is not part of the official TRL definitions.
TRL 7 — System prototype demonstration in an operational environment
A prototype at or near the planned operational system is demonstrated in an operational environment rather than in a reproduction of it. This is the difference between TRL 6 and TRL 7: TRL 6 shows the technology works in representative conditions, TRL 7 shows the system works where it will actually be used.
TRL 8 — System complete and qualified
The final form of the system is complete and qualified by test and demonstration against its specification and the applicable standards. The question is no longer whether the technology works, but whether the finished product meets every requirement for deployment.
TRL 9 — Actual system proven in an operational environment
The final system is proven by successful operation in its real application or market. For key enabling technologies the European Commission links this level to competitive manufacturing, and for space systems to proven operation in space.
Questions
What a technical reader asks first.
Why not start with the power at the output?
At an open port there is no flow; at a connected load, power is a coordinate of the operating point. What is tested is the existence, stability and reproducibility of the state.
Why a battery, if the system works?
The load can change faster than the system moves to a new operating point. The battery bridges that gap. A transient discharge is acceptable; a sustained one is not, which is why its balance is measured separately.
Why not publish the complete schematic so others can verify VENDOR?
Because schematic disclosure and physical verification answer different questions. A schematic describes connectivity; it does not by itself specify the dynamically controlled operating state of the system. The implementation parameters and control laws required to create that state are engineering know-how. Independent verification does not require them: internal behaviour can be measured at defined Frame 1 ports, while the energy balance can be tested independently at Frame 0 through the flows across the enclosure and the changes in stored energy.
Is a VENDOR site required?
No. The test location is chosen by the measuring party.
Where to go next
The engineering account of the operating regime, active power metrology and the developer’s own testing are held on separate pages.
How it works
The functional route through the stages of the installation.
Explore 02Where the energy comes from
How charge flow becomes measurable power, and what the source is not.
Explore 03Active power metrology
How active power is measured in an open system.
Explore 04Resonant circulation
Why large internal turnover is not net active power.
Explore 05Endurance test
What the developer’s own long-duration testing of the previous build showed.
Explore 06Patent portfolio
The intellectual property position of the project.
Explore
