We found this circuit in a Poptronics from 1998. The circuit can be extended to more competitors with another 4011. The power can be made with voltages from 6 to 12 V.
This amplifier was found in an 80s component manual. The circuit can be used for media recovery....
This is a bridge for the measurement of low value resistances and high values too. The circuit...
This digital mixer uses CMOS integrated circuits. The circuit was published by us in a magazine...