3.12 +300V HT PSU
The E1T tubes r300V
to operate. This power
supply is a simple flyback
convertor using a custom
transformer. It is a very
robust supply. Q2 acts as a
level convertor and makes
the logic positive: a 3.3V
input is required to switch
the convertor on. The circuit
around Q3 provides a soft
start to the convertor.
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Содержание An E1T Timepiece
Страница 79: ...Fortress How It Works Board Schematics and Function Page 79 Version 1 0 Copyright Grahame Marsh Nick Stock 2019...
Страница 82: ...Page 82 Version 1 0 Copyright Grahame Marsh Nick Stock 2019 1 1 SAM3X8C schematic...
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Страница 120: ...E1T Data Sheet Page 120 Version 1 0 Copyright Grahame Marsh Nick Stock 2019...