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This circuit was found in a 80’s Popular Electronics. It issues a warning signal with the signal of the old type printer with parallel port.
The basic configuration for a 4017 when used as a decade divider with one-of-ten decoded outputs...
This circuit monitors the current in the negative line. The circuit is from a 2005 Linear...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...