The dual slope-sampling solar engine


Posted on Oct 28, 2012

The dual slope-sampling solar engine. Yet another interesting design from the fertile mind of Wilf Rigter If you had time to experiment with the ALF type SE circuit you may have discovered some of its shortcomings with regard to a Power Smart Head adaptation. The problem is that HCMOS gates are power hungry when used as SE voltage comparators when the analog input voltage is near the CMOS switching threshold. If an HCMOS gate is used without sampling, the chip supply current can be as high as 70mA with the comparator input voltage near the trigger threshold (Vcc / 2).


The dual slope-sampling solar engine
Click here to download the full size of the above Circuit.




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