General Purpose CMOS Switches (CB24987E)

This bank of switches can be programmed in a variety of ways for logic experiments. The circuit is from August 1986 Radio Electronics magazine.

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Integrator LS141 (CB15192E)
This circuit is from the 1982 SGS linear integrated circuit manual. The LS141 is like to the 741...
FSK Demodulator (CB15902E)
The integrated PLL XFl2211 (Exxar) is used to decode data transmitted by tones R1, C1, C2 and C3...
Double Touch Switch (CB16980E)
This bistable touch sensor circuit uses a relay and is very sensitive. We found it in a 1990...