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Frequency Counter: BNC Input
Download BNC input schematic circuit schematic:
PNG image (405x515 as seen below): bnc-input.png (7kb)
High-quality PDF: bnc-input.pdf (54kb)
Permission to copy and use this schematic is hereby granted provided credit is given where it is due.
PNG image (405x515 as seen below): bnc-input.png (7kb)
High-quality PDF: bnc-input.pdf (54kb)
Permission to copy and use this schematic is hereby granted provided credit is given where it is due.
![BNC input schematic circuit schematic [7kb]](bnc-input.png)
This is a CMOS-compatible (and hopefully also TTL) input featuring over- and under-volatage protection. Schmitt triggers are used to allow for input with long transition times. Verified to work up to 30MHz.
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