Divider by N (CB25201E)

This circuit uses BCD switches to program the frequency to be divided. The circuit is from a Radio Electronics magazine from February 1989.

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Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still common operational amplifier. The power supply does not have to be symmetrical. a href="images/stories/bc/04291029"
Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still...