audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Jan 01 2014 : 01:59:33 AM
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1) The polarity of the battery is backwards. With the NPN transistors shown, the collectors should be positive. 2) The polarity of the diodes is also backwards. 3) The transistors do not have any base current so they are never turned on. 4) The collector of Q2 has no output so it cannot drive the base of Q1. |
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