Single-Shot Auto-Charge Flash Circuit

Discussion in 'The Projects Forum' started by 4beowulf7, Jul 25, 2015.

  1. 4beowulf7

    Thread Starter New Member

    Jul 25, 2015
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    Hi guys,
    I've designed a single-shot auto-charge flash circuit and like to share with you.
    Greetings
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    I'm surprised there's no current-limiting resistor between Q1 collector and Q2 base :confused:.
     
  3. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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  4. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    True, but their supply is only 1.5V (not 12V) and their R1=27k (not 4k7), so less chance of excessive base current.
     
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