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TRANSISTORIZED_BAR_GRAPH_DRIVER

2016-05-07 00:28  
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TRANSISTORIZED_BAR_GRAPH_DRIVER
A resistor network (R1 through R10) with emitter followers (Q1 and Q2) drives LED drivers (Q3 through Q7). This circuit was used as a light organ to provide visual volume indication. It can be hooked to a speaker, to another audio source, etc.