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Old 15th Jun 2019, 3:54 pm   #68
Lucien Nunes
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Join Date: Apr 2008
Location: London, UK.
Posts: 2,508
Default Re: Bell and Howell TQII 1652 16mm projector

That's the open-circuit voltage. The source impedance will be high so it's really a current source that delivers a few mA alternately into D2 and Q2, the voltage never rising above 0.7V on either half-cycle.
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