However, it still under testing/development. It may be overkill for your application especially if a purpose built piezoelectric gas ignition system but I can publish the current prototype circuit if it interests you. The spark appears to be able to jump at least a 6mm air gap which I can alter if necessary by changing the charging time of the capacitor, its charging voltage and its capacity (currently 4.7 uF) 103549 3 OWNER’S MANUAL Heater Cabinet Example: Gas water heater 40,000 Btu/Hr Vent-free heater + 10,000 Btu/Hr. This system requires no matches, batteries, or other sources to light heater. If it ignites, you can safely rule out a gas-flow issue. Piezo Ignition System This heater has a piezo ignitor. It is controlled by an ATTINY85 and is triggered by PIR detectors which should be suppressed if the car is in motion. Using extreme caution, hold a lit match near a burner. The prototype is on an a 7cm x 9cm solder board and it powered by 4 x AA cells. This sudden forceful deformation produces a high voltage and subsequent. It consists of a small, spring-loaded hammer which, when a button is pressed, hits a crystal of PZT. In principle, it is based on a 200 volt power supply of a type used for nixie tubes, which charges a small capacitor, also a small thyristor based circuit similar to that in a CDI (capacitor discharge ignition) and a small ignition coil intended for a 2 stroke motor which I bought for a couple of bucks on aliexpress. Piezo ignition uses the principle of piezoelectricity, which, in short, is the electric charge that accumulates in some materials in response to mechanical deformation. It is a sort of electric fence type application. One current project of mine is a high voltage spark generator actually for the purpose of discouraging Martins from entering the engine bay of my car because of their habit of gnawing through cables etc.
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