1.1.1 2008-02-16
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added pull-up resistor to button (suppress noise on processor input)

1.1 2007-04-10
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increased drill width of TO220
increased case size and drill width of foil capacitor

1.0 2006-09-30
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replaced 630V foil capacitor with pulse-proof version
changed origin of SOT23 components to center

0.5 2006-09-23
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replaced 400V components with 600V components (coil supercharges capacitor)
replaced 400V foil capacitor with 630V capacitor
replaced IRF740 with IRFBC40

0.4 2006-09-03
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completed PCB
added PE contacts for casing
corrected orientation of lamp connectors

0.3 2006-09-02
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fixed VDD5, VDD12
added VDD12 to FET driver CMOS chips
added data for missing parts
removed heatsinks (not needed: diodes T+45K, FETs T+20K)
started to create PCB
replaced some components to match footprint in PCB

0.2 2006-08-27
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bigger transformer
rectifiers: more power, added heatsinks
added status LED
added debug connector
some minor improvements

0.1 2006-08-24
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first version