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PRINT_TIMER

2014-11-22 16:37  
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PRINT_TIMER
Uses radar phantastron circuit to give correct combination of exposure time and color filtier for desired contrast and density. R1 sets exposure time from 6 to 60 seconds and R2 regulates contrast.-J. D. Weir, Print Timer Controls Density and Contrast, Electronics, 31:7, p 108-109.