This amplifier circuit with gain between 0 and 96 was found in the December 1983 issue of Radio Electronics magazine. The power supply must be 15 V.
SST OXY Flex Oxygen Sensor The purpose of this SST sensor is to measure oxygen level in enclosed...
The basic idea of this 1988 circuit is to use a signal called REMOTE existing in some types of...
With each touch on S1, an output of 4017 is activated, this in sequence 3, 2, 4, etc. These...